Table 1.
Demographics and characteristics of the disease (n = 22).
| Variables | Mean n |
SD % |
Min |
Max |
|---|---|---|---|---|
| Demographics | ||||
| Age (years) | 43.1 | 10.9 | 21.0 | 62.0 |
| Height (cm) | 173.7 | 8.7 | 152 | 190 |
| Weight (Kg) | 77.4 | 20.0 | 50 | 118 |
| BMI | 25.7 | 5.6 | 17.3 | 36.8 |
| Male sex | 19 | 86% | ||
| ASA: | ||||
| I | 5 | 22.7% | ||
| II | 14 | 63.6% | ||
| III | 3 | 12.6% | ||
| Alcohol history (yes) | 7 | 32% | ||
| No. drinks per day 1 | 2.2 | 1.9 | 1 | 6 |
| Duration (years) 2 | 12.8 | 6.9 | 2 | 20 |
| History of smoking (yes) | 11 | 50% | ||
| No. packs per day | 1.1 | 0.7 | 0.2 | 2 |
| Duration (years) 3 | 19.8 | 8.8 | 5 | 30 |
| Months since diagnosis of ONFH 4 | 2.3 | 2.2 | 0.1 | 7.6 |
| Cause of ONFH: | ||||
| Alcohol consumption | 1 | 4.5% | ||
| Corticosteroids | 5 | 22.7% | ||
| Idiopathic | 11 | 50.0% | ||
| Other 5 | 5 | 22.7% | ||
| Description of the affected femur | ||||
| Laterality (Right) | 13 | 59% | ||
| ARCO classification: | ||||
| IIA | 15 | 68.2% | ||
| IIB | 6 | 27.3% | ||
| IIC | 1 | 4.5% | ||
| Loss of bone in AP X-ray (none) 6 | 18 | 82% | ||
| Preoperative clinical data | ||||
| Total Harris Hip Score | 63.0 | 19.0 | 40 | 91 |
| Spontaneous pain in VAS scale (mm) 7 | 30.3 | 20.5 | 1 | 76 |
| Weight-bearing pain in VAS scale (mm) 8 | 57.9 | 21.1 | 10 | 100 |
ONFH: Osteonecrosis of the Femoral Head; VAS: Visual Analogue Scale; 1 One drink corresponds to 150 mL of wine or 360 mL of beer or 45 mL of hard liquor.; 2 One case stopped drinking 11 years ago; 3 Three cases reported being former smokers since 1, 6 and 7 years.; 4 Median (P25/P75) = 1.5 (0.5/3.4) months; 5 Alcohol+Corticosteroid (n = 1) Sickle cell disease (n = 2), Thalassemia (n = 1), Octreotide treatment (n = 1); 6 Four cases reported a loss of bone minor than 50% of diameter; 7 Median (P25/P75) = 29.5 (17.0/41.2) months; 8 Median (P25/P75) = 60.0 (48.0/70.0) months.