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. 2021 Feb 15;40(8):3357–3362. doi: 10.1007/s10067-020-05550-1

Table 3.

Case reports of arthritis reactive to SARS-CoV2 infection, clinical characteristics and diagnostic workup

Yokogawa et al. [10] Liew et al. [11] Ono et al. [12] Saricaoglu et al. [13] Danssaert et al. [14] Parisi et al. [15] Present case
Age and sex 57-year-old man 47-year-old man Male in his 50s 73-year-old man 37-year-old female 58-year-old female 60-year-old man
Time to arthritis 15 days after COVID19 diagnosis At diagnosis of COVID19 21 days after COVID19 diagnosis 15 days after COVID19 diagnosis 12 days after COVID19 diagnosis 25 days after prodrome infective symptoms 32 days after COVID19 diagnosis
Affected joints Right knee Right knee Left and right ankle Left I MTP, PIP, DIP and right II PIP and DIP Tendonitis of the II, III and IV extensor of the right hand Ankle Right knee and ankle
Therapy No therapy (self-recovery) Oral NSAID and intra-articular corticosteroid Oral NSAID and intra-articular corticosteroid Oral NSAID Topical NSAID, oral opioid, gabapentin Oral NSAID Oral NSAID
SF polarised microscopic examination No crystals No crystals No crystals - - - No crystals
SF culture - (negative Gram stain) Negative - - - Negative
SF PCR for SARS-CoV2 Negative Negative - - - - Negative
M. pneumoniae and C. pneumoniae serology - - Negative - - - Negative
Gonococco PCR/serology Negative Negative Negative - - - -
C. thracomatis PCR/serology - Negative Negative - - - -
M. urealyticum PCR/serology - - - - - - -
Urethral swab - - - - - - Negative
Uric acid - - Within the normal range Within the normal range Within the normal range - Within the normal range
RF - - Negative Negative Negative Negative Negative
ACPA - - Negative Negative - Negative Negative
ANA - - Negative - Negative Negative Negative
Anti-ENA - - - - - Negative Negative
HLA-B27 - - Negative - - Negative Negative
HBV and HCV antibodies - - Negative - - - Negative
CMV-DNA and EBV-DNA - - - - - - < 1000 copies/mL
Urine culture - - - - - - Negative
Blood culture - - - - - - Negative
Stool culture - - - - - - Negative

COVID19, Coronavirus disease 19; MTP, metatarsophalangeal, PIP, proximal interphalangeal; DIP, distal interphalangeal; NSAID, non-steroidal anti-inflammatory drug; SF, synovial fluid; PCR, polymerase chain reaction; SARS-CoV2, severe acute respiratory syndrome coronavirus 2; RE, rheumatoid factor; ACPA, anti-citrullinated peptide antibodies; ANA, anti-nuclear antibodies; ENA, Extractable nuclear antibodies; HLA, human leukocyte antigen, HBV, hepatitis B virus; HCV, hepatitis C virus