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| Characteristics | Value |
|---|---|
| Age (year) (range) | 33.8 (17 to 53) |
| Gender (hips, %) | |
| Male | 25 patients, 29 hips (69) |
| Female | 11 patients, 13 hips (31) |
| Body mass index (kg/m2) (range) | 23.3 (16.1 to 31.2) |
| Etiology (hips, %) | |
| Steroid | 22 (52) |
| Alcohol | 17 (40) |
| Idiopathic | 3 (7) |
| Stage (hips, %) | |
| 2 | 10 (24) |
| 3A | 28 (67) |
| 3B | 4 (10) |
| Type (hips, %) | |
| B | 0 (0) |
| C-1 | 33 (79) |
| C-2 | 9 (21) |
