Skip to main content
Drug Design, Development and Therapy logoLink to Drug Design, Development and Therapy
. 2021 Mar 4;15:983–995. doi: 10.2147/DDDT.S298691

Beware of Steroid-Induced Avascular Necrosis of the Femoral Head in the Treatment of COVID-19—Experience and Lessons from the SARS Epidemic

Shenqi Zhang 1,2,3, Chengbin Wang 3, Lei Shi 1, Qingyun Xue 1,2,
PMCID: PMC7939498  PMID: 33692615

Abstract

Summary

The recent outbreak of coronavirus disease 2019 (COVID-19) has become a global epidemic. Corticosteroids have been widely used in the treatment of severe acute respiratory syndrome (SARS), and the pathological findings seen in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection are very similar to those observed in severe acute respiratory syndrome-related coronavirus (SARS-CoV) infection. However, the long-term use of corticosteroids (especially at high doses) is associated with potentially serious adverse events, particularly steroid-induced avascular necrosis of the femoral head (SANFH). In today’s global outbreak, whether corticosteroid therapy should be used, the dosage and duration of treatment, and ways for the prevention, early detection, and timely intervention of SANFH are some important issues that need to be addressed. This review aims to provide a reference for health care providers in COVID-19 endemic countries and regions.

Article Focus

Hormones are a double-edged sword. This review aims to provide a reference for health care providers in coronavirus disease 2019 (COVID-19) endemic countries and regions, especially with respect to the pros and cons of corticosteroid use in the treatment of patients with COVID-19.

Key Messages

In today’s global outbreak, whether corticosteroid therapy should be used, the dosage and duration of treatment, and ways for the prevention, early detection, and timely intervention of SANFH are some important issues that need to be addressed.

Strengths and Limitations

Since SARS was mainly prevalent in China at that time, many evidences in this paper came from the reports of Chinese scholars. There is a bias in the selection of data, which may ignore the differences in environment, race, living habits, medical level and so on. SANFH may be the result of multiple factors. Whether the virus itself is an independent risk factor for SANFH has not been confirmed. In this paper, through literature retrieval, some reference opinions on glucocorticoid usage, diagnosis and treatment of SANFH are given. However, due to the lack of large-scale research data support, it can not be used as the gold standard for the above problems.

Keywords: COVID-19, steroid, necrosis of the femoral head, SARS

Search Strategy and Selection Criteria

We searched the ScienceDirect, PubMed, MEDLINE, and Wiley (between January 2003, and August 2020) for articles published from the inception of each database. We used the search terms “SARS” or “COVID-19” in combination with the terms (“ARDS” or “respiratory system”) and (“steroid” or “glucocorticoid” or “steroid-induced”) with (“necrosis of the femoral head” or “necrosis”). We largely selected articles published in the past 15 years, but we did not exclude commonly referenced and highly regarded older publications. We also searched the reference lists of articles identified by this search strategy and selected those we judged relevant.

Introduction

The recent outbreak of the coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has become a pandemic. It was found that the amino acid sequence of the spike (S) protein of SARS-CoV-2 was 76·47% similar to that of severe acute respiratory syndrome-related coronavirus (SARS-CoV), but its affinity for angiotensin-converting enzyme 2 (ACE2) was 10 to 20 times higher than that of the latter, resulting in rapid transmission between people.1 Huang et al reported that fever (98%) and cough (76%) were the initial features of the disease. 55% of the patients developed dyspnea after an average of 8 days of illness onset, and 29% of the patients developed ARDS 9 days after illness onset.2 The pathological results showed that ARDS played an important role in the death of COVID-19 patients. Further, autopsy revealed bilateral diffuse alveolar injury with exudation of fibrous mucus and a mononuclear inflammatory infiltrate dominated by lymphocytes in the lung interstitium, which were related to the cytokine storm induced by overactivation of the immune system. These findings were very similar to those observed in SARS-CoV infection.3 Corticosteroids have been widely used in the treatment of severe acute respiratory syndrome (SARS). During the SARS epidemic of 2003, corticosteroids were considered to improve the patient’s condition in the early stages by reducing fever, reducing lung inflammatory infiltration, and improving oxygenation; however, long-term use (especially at high doses) is associated with potentially serious adverse events.4 In a follow-up study, 23.1% (18 of 78) of Chinese patients with SARS developed steroid-induced avascular necrosis of the femoral head (SANFH) which was mainly due to the administration of high-dose glucocorticoids during the treatment of SARS.5 However, most of the studies ignored the influence of other confounding factors when analyzed the relationship between steroid and osteonecrosis of the femoral head(ONFH) retrospectively. There are many factors to be looked for, such as hemoglobinopathies (especially sickle cell anemia), autoimmune diseases, hyperlipidemia, excessive alcohol intake and abuse of traditional Chinese medicine.6 For example, the steroid dose is positively correlated with the incidence of osteonecrosis in systemic lupus erythematosus patients. The rate of osteonecrosis increased when prednisone-equivalent > 20 mg/d, each 10 mg/d increase was associated with a 3.6% increase.7 In addition, prior osteoporotic status and vitamin D deficiency of patients can not be ignored. Gangji confirmed that ONFH is associated with low bone mineral density.8 Inoue reported that the serum concentration of 1.25 (OH) 2D3 in 18 patients with idiopathic ONFH (16.7 ± 7.9 pg/mL) was significantly lower than that in the control group (26.9 ± 13.7 pg/mL) (P < 0.01), suggesting the possibility of bone metabolism abnormalities due to abnormal vitamin D3 metabolism as a background of ONFH.9 It has also been suggested that SARS itself may be an independent risk factor for ONFH.10

The prognosis of untreated SANFH is poor; it often leads to subchondral collapse in a short time. Timely diagnosis and treatment can preserve the function of the hip joint to the maximum extent only if detected in the early stages. Hormones are a double-edged sword. In today’s global outbreak, whether corticosteroid therapy should be used, the dosage and duration of treatment, and ways for the prevention, early detection, and timely intervention of SANFH are some important issues that need to be addressed. We hope that this review can provide a reference for health care providers in COVID-19 endemic countries and regions, especially with respect to the pros and cons of corticosteroid use in the treatment of patients with COVID-19.

Mechanism of Action of Glucocorticoids

The inflammation and cytokine storm caused by the immune response are responsible for the fatal pneumonia after SARS-CoV infection.11 Cytokines such as interferon gamma (IFN-γ), tumour necrosis factor (TNF), interleukin-1 (IL-1), and interleukin-6 (IL-6) can cause tissue damage.12 It is well known that corticosteroids do not directly inhibit viral replication, but their main effects are anti-inflammatory and immunosuppressive. Glucocorticoids can inhibit the “cytokine storm” by inhibiting the expression of proinflammatory proteins such as IL-1, IL-2, IL-6, TNF-α, and IFN-γ and the migration of leukocytes to the sites of inflammation.13 Glucocorticoids can also affect lipid metabolism. If the emulsification of very low-density lipoprotein cholesterol in the blood is not complete, it will combine with the lipoprotein globules which can form fat emboli resulting in blockage of the peripheral blood vessels and, consequently, ischaemic necrosis of the bone tissue in the vascular supply area. At the same time, the free fatty acids produced by hydrolysis of the fat emboli damage the capillary endothelial cells, cause diffuse vasculitis, and trigger intravascular coagulation, all of which aggravate the ischaemic necrosis of bone tissue.14 Glucocorticoids can also regulate the local blood flow by regulating the response of the blood vessels to vasoactive substances, which leads to constriction of the internal artery of the femoral head resulting in femoral head ischaemia.15 Fu et al found that the expression of microRNA 596 (miR-596) in the bone marrow of patients with steroid-induced femoral head necrosis (FHN) was upregulated, which could hinder the repair of the osteonecrotic bone by inhibiting the proliferation and osteogenic differentiation of the bone marrow stromal cells (BMSCs).16 Some basic studies have found that microRNA-17-5p (miR-17-5p) and miR-210 are related to the pathogenesis of SANFH.17,18 Du et al confirmed for the first time that four sensitive single-nucleotide polymorphisms (SNPs), namely, rs3740938, rs2012390, rs1940475, and rs11225395 of MMP8 from the MMP (matrix metalloproteinases)/TIMP (tissue inhibitors of MMP) system were significantly correlated with the increased risk of steroid-induced FHN in a study conducted in northern China.19 Wang et al considered that −1031CT/CC and −863 AC genotypes may be risk factors for FHN in patients with SARS.20

Pros and Cons of Glucocorticoid Therapy

There is no specific drug for the treatment of COVID-19. Fever, cough, and dyspnoea are the most common symptoms of COVID-19. Symptomatic supportive treatment is still the most effective treatment. ARDS is a serious complication of COVID-19 and the use of glucocorticoids in the treatment of severe COVID-19 pneumonia and ARDS is controversial. Herein, we compiled a table including opinions (Table 1) and research details in the treatment of COVID-19 pneumonia and ARDS, and present the points in favour of and against the use of glucocorticoids.

Table 1.

Main Characteristics and Findings of the Studies About COVID‐19 Patients Using Steroids

Author/Country Study Design Sample Size Grouping Age Male Gender Patient Condition Mortality Interventions/Treatments Recommendation
21 Galvez-Romero JL/Mexico Open-label, non-randomized study 209 Steroids/CsA plus steroids 54.06 ±13.8/55.3 ±13.3 61%/69% Moderate or severe 35%/22% (p=0.02) Methylprednisolone(0.5 mg/kg IV QD) or Prednisone(25 mg PO QD) up to 10 days; CsA (1–2 mg/kg PO QD) for 7 days CsA plus steroids can reduce mortality of patients with moderate to severe disease
22 Reiichiro Obata/America Retrospective study 226 Steroids/No steroids 70(59.5,79)/64(51, 76) 50.9%/59.2% COVID-19 patients OR[95% CI]:1.02,[0.60–1.73],(p=0.94) Not mentioned Steroids did not decrease or increase in-hospital mortality
23 Ana Fernández-Cruz/Spain Retrospective controlled cohort study 463 Steroids/No steroids 65.4/68.1 69.7%/61.2% Moderate or severe ARDS 26.2%/60%
(P=0.014)
1 mg/kg/day methylprednisolone for 10 days (IQR, 8 −13);
250 −500 mg/day methylprednisolone for 3 pulses (IQR, 2–4).
Glucocorticoids(initial regimen or pulses) can reduce mortality of patients with COVID-19
24 Kota Murohashi/Japan Cases report 11 Favipiravir plus methylprednisolone 63.2 73% Severe None Favipiravir (1.8 g BID on day 1, followed by 0.8 g BID for a total of 14 days) plus Methylprednisolone (80, 250, or 500 mg/day) for 3–6 days. The early-stage use of a combination of favipiravir and methylprednisolone in severe cases can achieve a favorable clinical outcome
25 Alejandro Rodríguez-Molinero/Spain Cohort study 418 Steroids/No steroids 65.4 56.9% COVID- 19 patients with pulmonary involvement 6 (8.1%)/10(13.2%) Methylprednisolone 1 mg/kg/day or dexamethasone 20–40 mg/day The mortality can not been analysed due to the low number of events. There is no benefit in the use of glucocorticoids in terms of lung function or time to discharge
26 Yan Hu/China Single-center study 308 Steroids/No steroids 54 (44–63)/48 (39–60) 47.2%/46.7% COVID- 19 patients with pulmonary involvement None Equivalent of methylprednisolone 0.75–1.5 mg/kg/d) Glucocorticoid therapy did not significantly influence the clinical course, adverse events nor the outcome of COVID-19 pneumonia
27 Muhammad A. Rana/PAK Retrospective quasi-experimental study 60 Dexamethasone/Methylprednisolone 53.8/53.9 66.7%/70% Patients treated in HDU/ICU and had been on bi-level positive airway pressure. Not mentioned Dexamethasone 8 mg BID/Methylprednisolone 40 mg BID; 8 days Dexamethasone is more effective in improving the P/F ratio in COVID-19 patients compared to methylprednisolone
28 Marla J Keller/UAS Observational study 1806 Steroids/No steroids 61.7 ± 15.9/62.3 ± 17.9 49.3%/46.3% COVID-19 patients Glucocorticoid increased mortality of patients with CRP< 10 mg/dL Early glucocorticoids (within 48 hours of admission) Choosing the right patients is critical to maximize the likelihood of benefit and minimize the risk of harm
29 Hong-Ming Zhu/China Single-center retrospective study 102 Steroids/No steroids Not mentioned 49.3%/57.6% Severe or critically ill log-rank 0.199, P = 0.655 Methylprednisolone 0.75–1.5 mg/kg/d, < 14 days Methylprednisolone treatment does not improve prognosis in severe and critical COVID-19 patients
30 Malgorzata Mikulska/Italy Observational single-center study 196 SOC plus early inflammatory treatment/SOC 64.5/73.5 70%/62% COVID-19 patients who were not intubated HROW = 0.48 95% CI,
0.23–0.99; p = 0.049
Tocilizumab (8mg/kg IV or 162mg subcutaneously) or methylprednisolone 1 mg/kg or both; 5 days Early administration of tocilizumab, methylprednisolone or both can mitigate he negative impact of immune response in COVID-19
31 V. Spagnuolo/Italy Retrospective study 280 Steroids/No steroids 67 (54–77)/62 (53–73) 78%/77.4% Moderate & severe 6.8%/3.6%,
(p = 0.29)
Initial methylprednisolone 0.87 (0.51–1.0) mg/Kg, discontinuation 0.38 (0.21–0.53) mg/Kg; 9 (7–16) days SARS-CoV-2 clearance was not associated with corticosteroid use but older age or a more severe disease
32 WHO REACT Working Group Prospective meta-analysis 1703 Steroids/No steroids 60(52–68) 71% Critically ill Summary OR, 0.66 [95% CI, 0.53–0.82]; P < 0.001 based on a fixed-effect meta-analysis Dexamethasone 15 mg/d, hydrocortisone 400 mg/d, or methylprednisolone 1 mg/kg/d Compared with usual care or placebo, systemic corticosteroids was associated with lower 28-day all-cause mortality
33 Soumya Sarkar/India Meta-analysis 15,754 Steroids/No steroids Not mentioned Not mentioned COVID-19 patients OR = 1.94, 95% CI: 1.11–3.4, I2 = 96% Methylprednisolone equivalent ≤ 40 mg/day or ≥ 50 mg/day Steroid increased mortality
34 Xiaofan Lu/China Retrospective study 244 Steroids/No steroids 62 (50–71) 52% Critically ill Every 10-mg increase in dosage was associated with additional 4% mortality risk (adjusted HR 1.04, 95% CI 1.01–1.07) Hydrocortisonee 200 mg/day (range 100–800), 8 days(4–12). Corticosteroid must be commenced with caution
35 Peter Horby/UK Controlled, open-label trial 6425 Steroids/No steroids 66.9±15.4/65.8±15.8 64%/64% COVID-19 patient 22.9%/25.7% (age-adjusted rate ratio, 0.83; 95% confidence interval [CI], 0.75 to 0.93; P<0.001) Dexamethasone 6 mg QD, PO or IV,10 days Dexamethasone can reduce mortality of patients who were receiving either invasive mechanical ventilation or oxygen alone but not among those receiving no respiratory support

Abbreviations: CsA, cyclosporine-A; IV, intravenous; QD, quaque die; PO, per os; COVID‐19, coronavirus disease‐2019; OR, odds ratio; CI, confidence interval; ARDS, acute respiratory distress syndrome; IQR, interquartile range; BID, bis in die; HDU, high-dependency unit; ICU, intensive care unit; P/F, partial oxygen pressure (PaO2)/inspired oxygen fraction (FiO2); CRP, C-reactive protein; SOC, standard of care; HR, hazard ratio; OW, overlap weights; SARS‐CoV‐2, severe acute respiratory syndrome coronavirus 2; REACT, Rapid Evidence Appraisal for COVID-19 Therapies.

Favor

It is well known that corticosteroids are beneficial in the treatment of ARDS because they reduce inflammation and improve the functioning of the lung and extrapulmonary organs. Experiments on animals have also shown that inhibition of inflammation can improve the prognosis of animals infected with SARS-CoV.36 Russell et al summarised the clinical evidence indicating that corticosteroids can be used in patients with SARS-CoV infection.37 A large number of retrospective studies have also shown that the corticosteroids prescribed to the vast majority of SARS patients may contribute to the regulation of the inflammatory response and treatment of lung injury.38 Chen et al, through a retrospective study of 401 patients with severe SARS, found that the appropriate application of glucocorticoids in patients with severe SARS can significantly reduce mortality and shorten the length of hospital stay.39 A total of 2141 patients with influenza A (H1N1) viral pneumonia from 407 hospitals in China received five kinds of low-dose corticosteroids (25–150 mg/day methylprednisolone or equivalent) which significantly reduced the mortality in patients with PaO2/FiO2 < 300 mmHg.40 The genome structure, transmission, and pathogenesis of SARS-CoV-2 are similar to those of SARS-CoV. In view of the fact that there is no conclusive evidence at present and there is an urgent need in clinical practice, the National Health Commission of China suggests that methylprednisolone should be used appropriately within a short period of time (3–5 days) onset of pneumonia and at a dose not exceeding 1–2 mg/kg/day. This method may achieve a good therapeutic effect in patients with a strong inflammatory response and acute progression of the disease observed by lung imaging.41 Extensive inflammation, which is caused by excessive activation of proinflammatory cytokines and chemotaxis of T lymphocytes to the inflammatory site, is the possible mechanism of the chest tightness and dyspnoea in COVID-19. Short-term and low-dose corticosteroid treatment can quickly relieve the symptoms of chest tightness and dyspnoea.42 Some scholars believe that this treatment should not be limited to severely ill patients because the early use of corticosteroids can reduce the risk of ARDS in viral infections.43 The utilisation rate of glucocorticoids in COVID-19 patients reported by many hospitals in China was 28.0% to 44.9%,44–46 and even 70% in some critically ill patients.47 This was due to their experience of treating patients with similar medications during the SARS-Co-V epidemic. A retrospective cohort study of 201 patients with confirmed COVID-19 pneumonia at the Wuhan Jinyintan Hospital showed that methylprednisolone treatment may be beneficial to patients with ARDS.48 Recent multicentre studies have shown that Early administration of dexamethasone could reduce duration of mechanical ventilation and overall mortality in patients with established moderate-to-severe ARDS.49 Although the World Health Organisation (WHO) does not recommend the routine use of glucocorticoids in patients with COVID-19, some scholars believe that the uncertain clinical evidence should not be the reason for abandoning corticosteroids in the treatment of COVID-19. At the very least, corticosteroids can be prescribed to the right patients at the right time. For example, in the context of cytokine storms, if tocilizumab is ineffective, steroid immunosuppression can be considered.50 The results of a systematic review and meta-analysis by Yang et al revealed that patients with a severe illness were more likely to need corticosteroid treatment.51 Therefore, it is suggested that in the treatment of patients with COVID-19, corticosteroids should not be administered to patients with a mild illness but can be used in moderate doses in patients with a severe illness to inhibit the immune response and relieve symptoms.

Opposition

During the SARS outbreak, systemic corticosteroids were widely used. However, a systematic review of the published literature on their application in SARS concluded that the treatment was not beneficial. In Stockman’s meta-analysis on the use of steroids in SARS, the idea of using corticosteroids to treat ARDS was conjectured, for 25 studies were inconclusive and only four were conclusive, all of which showed that corticosteroid use was harmful.52 Moreover, corticosteroids may damage the innate antiviral immune response. If given before virus replication is controlled, they may delay virus clearance leading to aggravation of the disease and complications of corticosteroid treatment in survivors.53,54 In Wuhu, corticosteroid therapy is widely used in patients with COVID-19, but there is no evidence of any clinical benefits from its use in patients who do not have ARDS.55 In the preliminary data of a COVID-19 retrospective cohort study in China, corticosteroids were used more frequently in patients who died (48%) than in patients who survived (23%).56 Some people think that most of the patients in the above studies are critically ill patients with ARDS, and the ability of steroids to improve the (poor) prognosis in such cases is overestimated.57 Moreover, health care providers tend to use corticosteroids for the most critical patients. Therefore, the presence of a selection bias and confounding factors may result in a biased conclusion. In the absence of solid scientific evidence, the WHO and Centers for Disease Control and Prevention (CDC) recommend that corticosteroids should not be routinely used in the treatment of viral pneumonia or ARDS in patients with COVID-19 unless otherwise indicated, such as during asthma, exacerbation of chronic obstructive pulmonary disease, or septic shock.37 Zha et al reported that 11 out of 31 patients with COVID-19 received corticosteroid treatment (40 mg methylprednisolone was administered once or twice a day within 24 hours of admission for an average of 5 days). Cox proportional hazard regression analysis showed that there was no correlation between corticosteroid treatment and the virus clearance time, hospital stay, or symptom duration.55 In cases where the advantage is uncertain, the complications are definite. In one study, 39% patients with SARS developed FHN within a few months of glucocorticoid treatment.58 Furthermore, in another study, some patients who received corticosteroids for less than 4 weeks or received fewer corticosteroids, too, developed FHN.59 But some scholars believe that SARS virus itself is an independent factor for the occurrence of femoral head necrosis.10 Ksiazek shown that SARS virus may directly cause ONFH through S protein.60 In addition, we believe that the strong systemic inflammatory response to release a large number of inflammatory mediators, patients with varying degrees of hypoxemia in the course of the disease can also lead to ONFH. COVID-19 patients may also suffer these pathological processes. So, we think it is irrational to deny the positive therapeutic effect of glucocorticoids. At least for those critically ill patients, saving their lives is the most important thing.

In addition, when evaluating the effect of steroid therapy, we should not ignore the role of other confounding factors. Vitamin D3, for example, may have some extra-skeletal effects, especially on the immune system and lung function.61 The main complication of COVID-19 is ARDS mediated by a variety of mechanisms that may be aggravated by vitamin D deficiency and tapered down by activation of the vitamin D receptor.62 Anweiler found bolus vitamin D3 supplementation during or just before COVID-19 was associated in frail elderly with less severe COVID-19 and better survival rate, indicating Vitamin D3 supplementation may be effective for COVID-19 treatment.63

Of course, in addition to causing SANFH, other complications caused by hormones can not be ignored. Osteoporosis, adrenal suppression, hyperglycemia, dyslipidemia, cardiovascular disease, Cushing’s syndrome, mental disorders and immunosuppression are also serious side effects in the treatment of systemic corticosteroid.64 Although high-dose glucocorticoid pulse therapy has a rapid anti-inflammatory effect, it also increases the neutrophil/lymphocyte ratio and D-dimer level, increasing the risk of thromboembolism.65 For newly diagnosed diabetic patients, frequent use of glucocorticoids may exacerbate hyperglycemia.66 Obata et al found that the bacterial infection rate (25%/13.1%, P = 0.041) and fungal infection rate (12.7%/0.7%, P < 0.001) during hospitalization in steroid group were significantly higher than those in non steroid treatment group.22 There have also been reports about glucocorticoid caused bacterial endocarditis, strongyloides or amebic infections that can progress to catastrophic complications in patients with COVID-19 pneumonia.67,68

Glucocorticoid Usage

The sequelae of SARS are closely related to the dosage of the hormone, duration of hormone use, sensitivity of patients to the hormone, and method of administration.69

Maximum Daily Dose

In one study, logistic regression analysis showed that there was a correlation between the maximum daily dose of glucocorticoids and FHN, suggesting that adequate control of the maximum daily dose is necessary.70 Motomura et al treated rabbits with 1 mg/kg, 5 mg/kg, 20 mg/kg, and 40 mg/kg methylprednisolone; the incidence of osteonecrosis was 0%, 42%, 70%, and 96%, respectively.71 By comparison (5 mg/kg/day vs 1 mg/kg/day), Marsh et al found that osteonecrosis only occurred in the 5 mg/kg/day group.72 Massardo et al reported that a dose of prednisone greater than 40 mg/day was positively correlated with osteonecrosis,73 and the incidence rate increased by 3.6% for every 10 mg increase in the dose.7

Cumulative Dose

In a retrospective study of 539 SARS patients treated with corticosteroids, the increased incidence of FHN was associated with the total dose of corticosteroids.74 Griffith et al reported that the risk of FHN was 0.6% in patients receiving less than 3 g of prednisolone equivalent dose and 13% for doses greater than 3 g.75 Zhao et al observed a nonlinear relationship between the cumulative dose and osteonecrosis. When the total dose of methylprednisolone was less than 5 g, the risk of osteonecrosis was still relatively low. However, as the total dose increased from 5 g to 10 g, the risk of osteonecrosis increased. The risk seemed to be the highest when the total dose was about 10 g to 15 g. It is considered that a low cumulative dose of corticosteroids (methylprednisolone < 5 g) is relatively safe for patients with SARS. Doctors should avoid using high-dose corticosteroids, especially those with cumulative doses > 10 g.76 A study by Rademaker et al suggested that 700 mg prednisolone was the threshold for the occurrence of femoral head necrosis.77 Michael et al suggested that cumulative doses > 2000 mg of methylprednisolone, > 1900 mg of hydrocortisone, > 1340 mg of hydrocortisone equivalent, and > 13,340 mg of corticosteroid therapy were risk predictors of osteonecrosis.78

Duration of Medication

Zhao et al reported that the incidence of osteonecrosis was closely related to the duration of treatment in 1137 patients with SARS. The rate ratio (RR) of osteonecrosis was 1.29 (95% CI 1.09–1.53, P = 0.003) for every 10 days of treatment. The relationship was nonlinear. They also asserted that it was important to reduce the risk of osteonecrosis by modifying the duration of corticosteroid treatment.76

Individual Differences

Li et al conducted a comprehensive investigation on the bone and joint complications of patients with SARS and found that approximately 30% of patients had osteonecrosis, but the remaining patients (about 70%), who were infected with the same type of pathogens, did not show any complications with the same corticosteroid regimen,79 indicating that there were differences in patients’ susceptibility levels. Shigemura et al found that age was a risk factor, and the risk of osteonecrosis in adolescents and adults was significantly higher than that in children.80 Zhao et al found that there was no significant difference in the risk based on sex (RR 0.01, 95% CI 0.03–0.06, P = 0.582).76 Kerachian et al suggested that the difference in the incidence rate may depend on the duration of medication, dosage, or some potential diseases.15

Timing of Medication

The timing of glucocorticoid administration is very important for the prognosis of critically ill patients. Premature administration of glucocorticoids can inhibit the initiation of immune defence mechanisms, thus increasing the viral load and eventually leading to adverse consequences. Timely administration of glucocorticoids in the early stage of the inflammatory cytokine storm can effectively prevent the occurrence of ARDS.81 The clinical features of this period are the rapid progress of inflammatory infiltration and a deterioration in the level of oxygenation. In other words, if there is a significant progression of the lung lesions within 48 hours in mildly ill patients, glucocorticoid treatment can be considered to prevent untoward developments in these patients.82

Righteous Usage

With the increase in treatment doses and duration of glucocorticoids, the probability of developing obvious side effects is also increasing. Therefore, short-term and low-dose treatments should be used. Zhao et al considered that a cumulative dose of methylprednisolone < 5 g and course of treatment < 30 days were associated with a relatively low risk of osteonecrosis.76 According to Shanghai’s experience in treating COVID-19 patients, the initial dose of methylprednisolone was 40–80 mg/day for 3 days which was gradually reduced to 20 mg/day. The total treatment duration was less than 7 days. The safety of this dose was satisfactory.82 However, it has also been reported that even low-dose or short-term glucocorticoid therapy can cause FHN,83 and the above protocol was not followed up. Yang et al found that intermittent treatment is less likely to cause osteonecrosis in mice than continuous dexamethasone treatment. This “steroid vacation” method may be used for reference in clinical use.84

Post Glucocorticoid-Use Plan

Diagnosis

Early diagnosis is necessary for timely treatment because the treatment options for advanced disease are limited and many patients of FHN are young and active individuals. Regular hip monitoring via magnetic resonance imaging (MRI) should be carried out in high-risk patients as it has a sensitivity of 93 to 100%.85 Zhao et al emphasised the importance of regular screening via MRI. It was found that in 23 patients with a confirmed diagnosis of FHN, if MRI was only performed 2 to 3 months after hormone treatment, the diagnosis in 21 patients would be missed.86 The reported onset time of FHN after glucocorticoid use is from 3 weeks to 3 months.87,88 Diffusion-weighted MR images revealed that the diffusion of FHN was significantly enhanced, which can provide additional information to aid diagnosis.89 Because the clinical manifestations appear later than the imaging examination findings, 78.82% of glucocorticoid-induced FHN patients complain of pain within 3 years after the commencement of steroid treatment and 10.41%, within 6 years or more. The diagnosis of glucocorticoid-induced FHN mainly depends on imaging examination. MRI should be performed 3, 6, and 12 months after steroid administration.90 Ren et al suggested that ten main metabolites containing phosphatidylcholine are closely related to the early changes of steroid-induced FHN. If the clinical symptoms and imaging changes are not obvious, the ten metabolites can be used to monitor steroid-induced FHN 1 week later.91 Sun et al pointed out that plasminogen activator inhibitor type 1 (PAI-1) is a sensitive haemogram for screening high-risk and susceptible populations.92 In addition, serum levels of complement 3 (C3), C4, inter-alpha-trypsin inhibitor heavy chain H4, and α-2 macroglobulin may also be potential biomarkers for diagnosing FHN.93 Wei et al found that serum miR-423-5p in patients with steroid-induced FHN was significantly increased, suggesting a potential role in its diagnosis.94

Treatment

Without treatment or intervention, FHN may become an irreversible process. Some medications such as lipid-lowering drugs, anticoagulants, vasodilators, and traditional Chinese medicines can reduce the chances of developing necrosis. Levodopa can reduce osteocyte apoptosis and promote the repair of necrotic zones by promoting the synthesis and release of insulin-like growth factor-1 (IGF-1).95 Alendronate sodium can prevent and delay the progression of FHN by inhibiting the bone resorption capacity of osteoclasts and accelerating the apoptosis of osteoclasts.96 Pilose antler extract can regulate the expression of 11β-hydroxysteroid dehydrogenase (11 β-HSD) in rabbits’ femoral heads and osteoblasts, and promote the proliferation of osteoblasts.97 Camporesi et al conducted a 7-year follow-up of patients with SANFH. The results showed that hyperbaric oxygen (HBO) treatment for 6 weeks significantly improved the clinical symptoms in SANFH patients. The HBO environment increases the oxygen concentration in the blood and reduces bone marrow oedema. In addition, it also promotes angiogenesis as well as the function of osteoblasts and osteoclasts and provides the necessary preconditions for the treatment of SANFH.98 Koren et al considered HBO to be an effective method for the treatment of Association Research Circulation Osseous I and II (ARCO I and II) FHN in a study in which the patients were followed up for 11.1 ± 5.1 years.99 But the high cost of HBO treatment may be an important prohibitive factor. Experiments on animals have revealed that pulsed electromagnetic field stimulation can prevent SANFH in rats, and its mechanism may be related to the decrease in blood lipid levels and increase in transforming growth factor beta-1 (TGFβ-1) expression.100 Ludwig et al reported that extracorporeal shock wave therapy (ESWT) of 1-year duration significantly reduced pain and improved hip joint function, which was suitable for patients with ARCO I to III FHN. ESWT induces neovascularization and improves the blood supply to the femoral head by enhancing the expression of vascular endothelial growth factor (VEGF) in the femoral head.101 Liu et al retrospectively studied the long-term efficacy of combined therapy (alendronate sodium, ESWT, and HBO) in 37 patients with SANFH from 2003 to 2015. After 12 years of follow-up, it was found that comprehensive treatment can delay or prevent the development of SANFH after SARS. The combined treatment had different effects on FHN patients with different ARCO stages, and the greatest benefits were seen in patients with FHN ARCO I.102 Xie et al found that although most patients received ESWT, HBO, or traditional Chinese medicine to promote local blood circulation, these methods had no obvious short-term effects on the recovery of the femoral head.5 At present, significant progress has been made in the discovery of new ideas for treatment. Yang et al reported that the expression of gene COL5A2 was low in patients with SANFH; hence, COL5A2 may be a promising target in the treatment of SANFH.103 Alpha‑2‑macroglobulin (A2MG) is involved in many mechanisms of SANFH including coagulation, hyperlipidaemia, and free radical and MMP degradation.93 The results of real-time quantitative polymerase chain reaction (RQ-PCR) in a study showed that the level of serum A2MG in SANFH patients was significantly lower than that in the control group (P < 0.05). Immunohistochemical staining and Western blotting showed that the expression of A2MG in the necrotic area of patients with SANFH was significantly reduced (P < 0.05). Therefore, A2MG may become the new target in the treatment of SANFH.104

Conclusion

Even though there is a debate on the pros and cons of using steroid, from the perspective of orthopaedics, it is an indisputable fact that long-term and high-dose steroid use leads to ONFH. Therefore, we call for judicious use of corticosteroids in the treatment of COVID-19 patients and do not recommend it as a routine treatment. For patients who have received corticosteroid treatment, bisphosphonates, anticoagulants, vasodilators, and traditional Chinese medicine combined with ESWT, HBO, and other physical therapies can be considered. We reiterate the importance of regular screening in high risk patients, especially those on long-term steroids. MRI is the best tool for early detection of SANFH, and clinicians must take efforts to improve aware ness regarding the prevention of SANFH. A high index of suspicion is necessary for patients complaining of bone and joint pain at typical sites. Patients suspected of having SANFH should be referred to orthopaedic doctors in the early stages, and clinicians should try to delay the progression of osteonecrosis to prevent FHN from affecting the daily life of patients.

Abbreviations

COVID-19, coronavirus disease 2019; SARS, severe acute respiratory syndrome; ARDS, acute respiratory distress syndrome; CoV, coronavirus; SANFH, steroid-induced avascular necrosis of the femoral head; ONFH, osteonecrosis of the femoral head; IFN-γ, interferon gamma; TNF, tumor necrosis factor; IL-1, interleukin-1; IL-6, interleukin-6; BMSCs, bone marrow stromal cells; miR, microRNA; HBO, hyperbaric oxygen; ARCO, Association Research Circulation Osseous; ESWT, extra-corporeal shock wave therapy; MMP, matrix metalloproteinases.

Author Contributions

All authors made a significant contribution to the work reported, whether that is in the conception, study design, execution, acquisition of data, analysis and interpretation, or in all these areas; took part in drafting, revising or critically reviewing the article; gave final approval of the version to be published; have agreed on the journal to which the article has been submitted; and agree to be accountable for all aspects of the work.

Role of the Funding Source

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

Disclosure

The authors report no conflicts of interest in this work.

References

  • 1.Wrapp D, Wang N, Corbett KS, et al. Cryo-EM structure of the 2019-nCoV spike in the prefusion conformation. Science. 2020;367(6483):1260–1263. doi: 10.1126/science.abb2507 [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 2.Huang C, Wang Y, Xingwang L, et al. Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China. Lancet. 2020;395(10223):497–506. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 3.Zhe X, Shi L, Wang Y, et al. Pathological findings of COVID-19 associated with acute respiratory distress syndrome. Lancet Respir Med. 2020;8(4):420–422. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 4.Auyeung TW, Lee JSW, Lai WK, et al. The use of corticosteroid as treatment in SARS was associated with adverse outcomes: a retrospective cohort study. J Infect. 2005;51(2):98–102. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 5.Xie L, Liu Y, Fan B, et al. Dynamic changes of serum SARS-coronavirus IgG, pulmonary function and radiography in patients recovering from SARS after hospital discharge. Respir Res. 2005;6(1):5. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 6.Hernigou P. Hip osteonecrosis. Rev Prat. 2020;70(4):409–415. [PubMed] [Google Scholar]
  • 7.Mont MA, Pivec R, Banerjee S, Issa K, Elmallah RK, Jones LC. High-Dose Corticosteroid Use and Risk of Hip Osteonecrosis: meta-Analysis and Systematic Literature Review. J Arthroplasty. 2015;30(9):1506–1512. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 8.Gangji V, Soyfoo MS, Heuschling A, et al. Non traumatic osteonecrosis of the femoral head is associated with low bone mass. Bone. Bone. 2018;107:88–92. [DOI] [PubMed] [Google Scholar]
  • 9.Inoue S, Igarashi M, Karube S, Oda H. Vitamin D3 metabolism in idiopathic osteonecrosis of femoral head. Nihon Seikeigeka Gakkai Zasshi. 1987;61(6):659–666. [PubMed] [Google Scholar]
  • 10.Hofmann H, Geier M, Marzi A, et al. Susceptibility to SARS coronavirus S protein-driven infection correlates with expression of angiotensin converting enzyme 2 and infection can be blocked by soluble receptor. Biochem Biophys Res Commun. 2004;319(4):1216–1221. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 11.Channappanavar R, Perlman S. Pathogenic human coronavirus infections: causes and consequences of cytokine storm and immunopathology. Semin Immunopathol. 2017;39(5):529–539. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 12.Van Reeth K, Van Gucht S, Pensaert M. Correlations between lung proinflammatory cytokine levels, virus replication, and disease after swine influenza virus challenge of vaccination-immune pigs. Viral Immunol. 2002;15(4):583–594. [DOI] [PubMed] [Google Scholar]
  • 13.Strehl C, Ehlers L, Gaber T, Buttgereit F. Glucocorticoids-All-Rounders Tackling the Versatile Players of the Immune System. Front Immunol. 2019;10:1744. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 14.Koo K-H, Kim R, Kim Y-S, et al. Risk period for developing osteonecrosis of the femoral head in patients on steroid treatment. Clin Rheumatol. 2002;21(4):299–303. [DOI] [PubMed] [Google Scholar]
  • 15.Kerachian MA, Séguin C, Harvey EJ. Glucocorticoids in osteonecrosis of the femoral head: a new understanding of the mechanisms of action. J Steroid Biochem Mol Biol. 2009;114(3–5):121–128. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 16.Ligong F, Liu H, Lei W. MiR-596 inhibits osteoblastic differentiation and cell proliferation by targeting Smad3 in steroid-induced osteonecrosis of femoral head. J Orthop Surg Res. 2020;15(1):173. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 17.Yamasaki K, Nakasa T, Miyaki S, et al. Angiogenic microRNA-210 is present in cells surrounding osteonecrosis. J Orthop Res. 2012;30(8):1263–1270. [DOI] [PubMed] [Google Scholar]
  • 18.Jia J, Feng X, Weihua X, et al. MiR-17-5p modulates osteoblastic differentiation and cell proliferation by targeting SMAD7 in non-traumatic osteonecrosis. Exp Mol Med. 2014;46(7):e107. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 19.Du J, Jin T, Cao Y, et al. Association between genetic polymorphisms of MMP8 and the risk of steroid-induced osteonecrosis of the femoral head in the population of northern China. Medicine. 2016;95(37):e4794. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 20.Wang S, Wei M, Han Y, et al. Roles of TNF-alpha gene polymorphisms in the occurrence and progress of SARS-Cov infection: a case-control study. BMC Infect Dis. 2008;8:27. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 21.Galvez-Romero JL, Palmeros-Rojas O, Real-Ramírez FA, et al. Cyclosporine A plus low-dose steroid treatment in COVID-19 improves clinical outcomes in patient. J Intern Med Epub. 2020. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 22.Obata R, Maeda T, Dahlia Rizk DO, Kuno T. Increased secondary infection in COVID-19 patients treated with steroids in New York City. Jpn J Infect Dis Action Epub. 2020. [DOI] [PubMed] [Google Scholar]
  • 23.Fernández-Cruz A, Ruiz-Antorán B, Muñoz-Gómez A, et al. A Retrospective Controlled Cohort Study of the Impact of Glucocorticoid Treatment in SARS-CoV-2 Infection Mortality. Antimicrob Agents Chemother. 2020;64(9):e01168–20. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 24.Murohashi K, Hagiwara E, Kitayama T, et al. Outcome of early-stage combination treatment with favipiravir and methylprednisolone for severe COVID-19 pneumonia: a report of 11 cases. Respir Investig. 2020;58(6):430–434. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 25.Rodríguez-Molinero A, Pérez-López C, Gálvez-Barrón C, et al. Association between high-dose steroid therapy, respiratory function, and time to discharge in patients with COVID-19: cohort study. Med Clin (Barc). 2021;156(1):7–12. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 26.Yan H, Wang T, Zhimin H, et al. Clinical efficacy of glucocorticoid on the treatment of patients with COVID-19 pneumonia: a single-center experience. Biomed Pharmacother. 2020;130:110529. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 27.Rana MA, Hashmi M, Qayyum A, et al. Comparison of Efficacy of Dexamethasone and Methylprednisolone in Improving PaO2/FiO2 Ratio Among COVID-19 Patients. Cureus. 2020;12(10):e10918. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 28.Keller MJ, Kitsis EA, Arora S, et al. Effect of Systemic Glucocorticoids on Mortality or Mechanical Ventilation in Patients With COVID-19. J Hosp Med. 2020;15(8):489–493. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 29.Zhu H-M, Yan L, Bang-Yi L, et al. Effect of methylprednisolone in severe and critical COVID-19: analysis of 102 cases. World J Clin Cases. 2020;8(23):5952–5961. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 30.MikulskaI M, Nicolini LA, Signori A, et al. Tocilizumab and steroid treatment in patients with COVID-19 pneumonia. PLoS One. 2020;15(8):e0237831. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 31.Spagnuolo V, Guffanti M, Galli L, et al. Viral clearance after early corticosteroid treatment in patients with moderate or severe covid-19. Sci Rep. 2020;10(1):21291. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 32.Sterne JAC, Murthy S, Janet V, et al. for WHO Rapid Evidence Appraisal for COVID-19 Therapies (REACT) Working Group. Association Between Administration of Systemic Corticosteroids and Mortality Among Critically Ill Patients With COVID-19: a Meta-analysis. JAMA. 2020;324(13):1330–1341. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 33.Sarkar S, Khanna P, Kapil D. Soni. Are the steroids a blanket solution for COVID 19? A systematic review and meta analysis. J Med Virol. 2020. [DOI] [PubMed] [Google Scholar]
  • 34.Xiaofan L, Chen T, Wang Y. Adjuvant corticosteroid therapy for critically ill patients with COVID-19. Crit Care. 2020;24(1):241. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 35.The RECOVERY Collaborative Group. Dexamethasone in Hospitalized Patients with Covid-19 - Preliminary Report. N Engl J Med. 2020. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 36.DeDiego ML, Nieto-Torres JL, Regla-Nava JA, et al. Inhibition of NF-κB-mediated inflammation in severe acute respiratory syndrome coronavirus-infected mice increases survival. J Virol. 2014;88(2):913–924. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 37.Russell CD, Millar JE, Kenneth Baillie J. Clinical evidence does not support corticosteroid treatment for 2019-nCoV lung injury. Lancet. 2020;395(10223):473–475. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 38.Ho JC, Ooi GC, Mok TY, et al. High-dose pulse versus nonpulse corticosteroid regimens in severe acute respiratory syndrome. Am J Respir Crit Care Med. 2003;168(12):1449–1456. [DOI] [PubMed] [Google Scholar]
  • 39.Chen R-C, Tang X-P, Tan S-Y, et al. Treatment of severe acute respiratory syndrome with glucosteroids: the Guangzhou experience. Chest. 2006;129(6):1441–1452. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 40.Hui L, Yang S-G, Li G, et al. Effect of low-to-moderate-dose corticosteroids on mortality of hospitalized adolescents and adults with influenza A(H1N1)pdm09 viral pneumonia. Influenza Other Respir Viruses. 2017;11(4):345–354. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 41.Zheng Y, Xiong C, Liu Y, et al. Epidemiological and clinical characteristics analysis of COVID-19 in the surrounding areas of Wuhan, Hubei Province in 2020. Pharmacol Res. 2020;157:104821. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 42.Nie S, Han S, Ouyang H, Zhang Z. Coronavirus Disease 2019-related dyspnea cases difficult to interpret using chest computed tomography. Respir Med. 2020;167:105951. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 43.Quispe-Laime AM, Bracco JD, Barberio PA, et al. H1N1 influenza A virus-associated acute lung injury: response to combination oseltamivir and prolonged corticosteroid treatment. Intensive Care Med. 2010;36(1):33–41. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 44.Wang R, Pan M, Zhang X, et al. Epidemiological and clinical features of 125 Hospitalized Patients with COVID-19 in Fuyang, Anhui, China. Int J Infect Dis. 2020;95:421–428. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 45.Wang D, Bo H, Chang H, et al. Clinical Characteristics of 138 Hospitalized Patients With 2019 Novel Coronavirus-Infected Pneumonia in Wuhan, China. JAMA. 2019;323(11):1061–1069. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 46.Xiaowei X, Xiaoxin W, Jiang X, et al. Clinical findings in a group of patients infected with the 2019 novel coronavirus (SARS-Cov-2) outside of Wuhan, China: retrospective case series. BMJ. 2020;19(368):m606. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 47.Yang X, Yuan Y, Jiqian X, et al. Clinical course and outcomes of critically ill patients with SARS-CoV-2 pneumonia in Wuhan, China: a single-centered, retrospective, observational study. Lancet Respir Med. 2020;8(5):475–481. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 48.Chaomin W, Chen X, Cai Y, et al. Risk Factors Associated With Acute Respiratory Distress Syndrome and Death in Patients With Coronavirus Disease 2019 Pneumonia in Wuhan, China. JAMA Intern Med. 2020;180(7):934–943. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 49.Villar J, Ferrando C, Martínez D, et al. Dexamethasone treatment for the acute respiratory distress syndrome: a multicentre, randomised controlled trial. Lancet Respir Med. 2020;8(3):267–276. [DOI] [PubMed] [Google Scholar]
  • 50.Mehta P, McAuley DF, Brown M, et al. COVID-19: consider cytokine storm syndromes and immunosuppression. Lancet. 2020;395(10229):1033–1034. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 51.Yang Z, Liu J, Zhou Y, et al. The effect of corticosteroid treatment on patients with coronavirus infection: a systematic review and meta-analysis. J Infect. 2020;81(1):e13–e20. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 52.Stockman LJ, Bellamy R, Garner P. SARS: systematic review of treatment effects. PLoS Med. 2006;3(9):e343. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 53.Simpson JL, Carroll M, Yang IA, et al. Reduced Antiviral Interferon Production in Poorly Controlled Asthma Is Associated With Neutrophilic Inflammation and High-Dose Inhaled Corticosteroids. Chest. 2016;149(3):704–713. [DOI] [PubMed] [Google Scholar]
  • 54.Zumla A, Hui DS, Azhar EI, Memish ZA, Maeurer M. Reducing mortality from 2019-nCoV: host-directed therapies should be an option. Lancet. 2020;95(10224):e35–e36. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 55.Zha L, Shirong L, Pan L, et al. Corticosteroid treatment of patients with coronavirus disease 2019 (COVID-19). Med J Aust. 2020;212(9):416–420. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 56.Zhou F, Yu T, Du R, et al. Clinical course and risk factors for mortality of adult inpatients with COVID-19 in Wuhan, China: a retrospective cohort study. Lancet. 2020;395(10229):1054–1062. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 57.Zhou P, Yang X-L, Wang X-G, et al. A pneumonia outbreak associated with a new coronavirus of probable bat origin. Nature. 2020;579(7798):270–273. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 58.Hui L, de Vlas SJ, Liu W, et al. Avascular osteonecrosis after treatment of SARS: a 3-year longitudinal study. Trop Med Int Health. 2009;14(Suppl 1):79–84. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 59.Shibatani M, Fujioka M, Arai Y, et al. Degree of corticosteroid treatment within the first 2 months of renal transplantation has a strong influence on the incidence of osteonecrosis of the femoral head. Acta Orthopica. 2008;79(5):631–636. [DOI] [PubMed] [Google Scholar]
  • 60.Ksiazek TG, Erdman D, Goldsmith CS, et al. A novel coronavirus associated with severe acute respiratory syndrome. N Engl J Med. 2003;348(20):1953–1966. [DOI] [PubMed] [Google Scholar]
  • 61.Bouillon R, Marcocci C, Carmeliet G, et al. Skeletal and Extraskeletal Actions of Vitamin D: current Evidence and Outstanding Questions. Endocr Rev. 2019;40(4):1109–1151. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 62.Quesada-Gomeza JM, Entrenas-Castilloc M, Bouillond R. Vitamin D receptor stimulation to reduce acute respiratory distress syndrome (ARDS) in patients with coronavirus SARS-CoV-2 infections: revised Ms SBMB 2020_166. J Steroid Biochem Mol Biol. 2020. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 63.Annweiler C, Hanotte B, Célarier T. Vitamin D and survival in COVID-19 patients: a quasi-experimental study. J Steroid Biochem Mol Biol. 2020;204:105771. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 64.Liu D, Ahmet A, Ward L, et al. A practical guide to the monitoring and management of the complications of systemic corticosteroid therapy. Allergy Asthma Clin Immunol. 2013;9(1):30. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 65.Yu Mareev V, Orlova YA, Pavlikova EP, et al. Steroid pulse -therapy in patients With coronAvirus Pneumonia (COVID-19), sYstemic inFlammation And Risk of vEnous thRombosis and thromboembolism (WAYFARER Study). Kardiologiia. 2020;60(6):15–29. [DOI] [PubMed] [Google Scholar]
  • 66.Morieri ML, Fadini GP, Boscari F, et al. Hyperglycemia, glucocorticoid therapy, and outcome of COVID-19. Diabetes Res Clin Pract. 2020. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 67.Regazzoni V, Loffi M, Garini A, Danzi GB. Glucocorticoid-Induced Bacterial Endocarditis in COVID-19 Pneumonia - Something to Be Concerned About? Circ J. 2020;84(10):1887. [DOI] [PubMed] [Google Scholar]
  • 68.Shirley D-A, Moonah S. COVID-19 and Corticosteroids: unfamiliar but Potentially Fatal Infections That Can Arise following Short-Course Steroid Treatment. Am J Trop Med Hyg. 2021. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 69.Nan-hai Q, Wen-long Z. Femoral head necrosis after severe acute respiratory syndrome: etiology and treatment. Chine J Tissue Eng Res. 2013;17(30):5525–5530. [Google Scholar]
  • 70.Shen J, Liang B-L, Zeng Q-S, et al. Report on the investigation of lower extremity osteonecrosis with magnetic resonance imaging in recovered severe acute respiratory syndrome in Guangzhou. Zhonghua Yi Xue Za Zhi. 2004;84(21):1814–1817. [PubMed] [Google Scholar]
  • 71.Motomura G, Yamamoto T, Irisa T, et al. Dose effects of corticosteroids on the development of osteonecrosis in rabbits. J Rheumatol. 2008;35(12):2395–2399. [DOI] [PubMed] [Google Scholar]
  • 72.Marsh JC, Zomas A, Hows JM, Chapple M, Gordon-Smith EC. Avascular necrosis after treatment of aplastic anaemia with antilymphocyte globulin and high-dose methylprednisolone. Br J Haematol. 1993;84(4):731–735. [DOI] [PubMed] [Google Scholar]
  • 73.Massardo L, Jacobelli S, Leissner M, González M, Villarroel L, Rivero S. High-dose intravenous methylprednisolone therapy associated with osteonecrosis in patients with systemic lupus erythematosus. Lupus. 1992;1(6):401–405. [DOI] [PubMed] [Google Scholar]
  • 74.Guo KJ, Zhao FC, Guo Y, Li FL, Zhu L, Zheng W. The influence of age, gender and treatment with steroids on the incidence of osteonecrosis of the femoral head during the management of severe acute respiratory syndrome: a retrospective study. Bone Joint J. 2014;96-B(2):259–262. [DOI] [PubMed] [Google Scholar]
  • 75.Griffith JF, Antonio GE, Kumta SM, et al. Osteonecrosis of hip and knee in patients with severe acute respiratory syndrome treated with steroids. Radiology. 2005;235(1):168–175. [DOI] [PubMed] [Google Scholar]
  • 76.Zhao R, Wang H, Wang X, Feng F. Steroid therapy and the risk of osteonecrosis in SARS patients: a dose-response meta-analysis. Osteoporos Int. 2017;28(3):1027–1034. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 77.Rademaker J, Dobro JS, Solomon G. Osteonecrosis and human immunodeficiency virus infection. J Rheumatol. 1997;24(3):601–604. [PubMed] [Google Scholar]
  • 78.Chan MHM, Chan PKS, Griffith JF, et al. Steroid-induced osteonecrosis in severe acute respiratory syndrome: a retrospective analysis of biochemical markers of bone metabolism and corticosteroid therapy. Pathology. 2006;38(3):229–235. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 79.Zi-rong L, Sun W, Hui Q, et al. Clinical research of correlation between osteonecrosis and steroid. Zhonghua Wai Ke Za Zhi. 2005;43(16):1048–1053. [PubMed] [Google Scholar]
  • 80.Shigemura T, Nakamura J, Kishida S, et al. Incidence of osteonecrosis associated with corticosteroid therapy among different underlying diseases: prospective MRI study. Rheumatology. 2011;50(11):2023–2028. [DOI] [PubMed] [Google Scholar]
  • 81.Qin -Y-Y, Zhou Y-H, Yan-Qiu L, et al. Effectiveness of glucocorticoid therapy in patients with severe coronavirus disease 2019: protocol of a randomized controlled trial. Chin Med J. 2020;133(9):1080–1086. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 82.Jingwen A, Yang L, Zhou X, Wenhong Zhang COVID-19. treating and managing severe cases. Cell Res. 2020;30(5):370–371. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 83.Seamon J, Keller T, Saleh J, Cui Q. The pathogenesis of nontraumatic osteonecrosis. Arthritis. 2012;2012:601763. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 84.Yang L, Boyd K, Kaste SC, et al. A model for glucocorticoid-induced osteonecrosis: effect of a steroid holiday. J Orthop Res. 2009;27(2):169–175. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 85.Tervonen O, Mueller DM, Matteson EL, et al. Clinically occult avascular necrosis of the hip: prevalence in an asymptomatic population at risk. Radiology. 1992;182(3):845–847. [DOI] [PubMed] [Google Scholar]
  • 86.Zhao F-C, Huai-Xia H, Zheng X, et al. Clinical analysis of 23 cases of steroid-associated osteonecrosis of the femoral head with normal initial magnetic resonance imaging presentation. Medicine. 2017;96(49):e8834. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 87.Kubo Y, Yamamoto T, Motomura G, et al. MRI-detected bone marrow changes within 3 weeks after initiation of high-dose corticosteroid therapy: a possible change preceding the subsequent appearance of low-intensity band in femoral head osteonecrosis. Rheumatol Int. 2015;35(11):1909–1912. [DOI] [PubMed] [Google Scholar]
  • 88.Xie X-H, Wang X-L, Yang H-L, Zhao D-W, Qin L. Steroid-associated osteonecrosis: epidemiology, pathophysiology, animal model, prevention, and potential treatments (an overview). J Orthopaedic Translat. 2015;3(2):58–70. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 89.Hong N, Du X, Nie Z, Sijun L. Diffusion-weighted MR study of femoral head avascular necrosis in severe acute respiratory syndrome patients. J Magn Reson Imagin. 2005;22(5):661–664. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 90.Zhao F-C, Zi-rong L, Guo K-J. Clinical analysis of osteonecrosis of the femoral head induced by steroids. Orthop Surg. 2012;4(1):28–34. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 91.Ren X, Fan W, Shao Z, et al. A metabolomic study on early detection of steroid-induced avascular necrosis of the femoral head. Oncotarget. 2018;9(8):7984–7995. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 92.Sun W, Zirong L, Shi Z, et al. Relationship between post-SARS osteonecrosis and PAI-1 4G/5G gene polymorphisms. Eur J Orthop Surg Traumatol. 2014;24(4):525–529. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 93.Chen Y, Zeng C, Zeng H, et al. Comparative serum proteome expression of the steroid-induced femoral head osteonecrosis in adults. Exp Ther Med. 2015;9(1):77–83. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 94.Wei B, Wei W. Identification of aberrantly expressed of serum microRNAs in patients with hormone-induced non-traumatic osteonecrosis of the femoral head. Biomed Pharmacother. 2015;75:191–195. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 95.Hongbo X, Tao W, Jian Z, et al. Levodopa attenuates cellular apoptosis in steroid-associated necrosis of the femoral head. Exp Ther Med. 2017;13(1):69–74. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 96.Hong Y-C, Luo R-B, Lin T, et al. Efficacy of alendronate for preventing collapse of femoral head in adult patients with nontraumatic osteonecrosis. Biomed Res Int. 2014;2014:716538. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 97.Ribusurong P, Peng H. 11β-hydroxysteroid dehydrogenases as targets in the treatment of steroid-associated femoral head necrosis using antler extract. Exp Ther Med. 2018;15(1):977–984. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 98.Camporesi EM, Vezzani G, Bosco G, Mangar D, Bernasek TL. Hyperbaric oxygen therapy in femoral head necrosis. J Arthroplasty. 2010;25(6 Suppl):118–123. [DOI] [PubMed] [Google Scholar]
  • 99.Koren L, Ginesin E, Melamed Y, Norman D, Levin D, Peled E. Hyperbaric oxygen for stage I and II femoral head osteonecrosis. Orthopedics. 2015;38(3):e200–e205. [DOI] [PubMed] [Google Scholar]
  • 100.Ding S, Peng H, Fang H-S, Zhou J-L, Wang Z. Pulsed electromagnetic fields stimulation prevents steroid-induced osteonecrosis in rats. BMC Musculoskelet Disord. 2011;12:215. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 101.Ludwig J, Lauber S, Lauber HJ, Dreisilker U, Raedel R, Hotzinger H. High-energy shock wave treatment of femoral head necrosis in adults. Clin Orthop Relat Res. 2001;387:119–126. [DOI] [PubMed] [Google Scholar]
  • 102.Liu T, Jinchao M, Bin S, Wang H, Wang Q, Ma X. A 12-year follow-up study of combined treatment of post-severe acute respiratory syndrome patients with femoral head necrosis. Ther Clin Risk Manag. 2017;13:1449–1454. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 103.Yang F, Luo P, Ding H, Zhang C, Zhu Z. Collagen type V a2 (COL5A2) is decreased in steroid-induced necrosis of the femoral head. Am J Transl Res. 2018;10(8):2469–2479. [PMC free article] [PubMed] [Google Scholar]
  • 104.Fang S-H, Yong-Feng L, Jiang J-R, Chen P. Relationship of α2-Macroglobulin with Steroid-Induced Femoral Head Necrosis: a Chinese Population-Based Association Study in Southeast China. Orthop Surg. 2019;11(3):481–486. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Drug Design, Development and Therapy are provided here courtesy of Dove Press

RESOURCES