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Previous operations
| Previous operations | Number of hips (N = 18) |
|---|---|
| Internal fixation for treatment of fracture | 5 |
| Septic hip arthrotomy | 4 |
| Decompression procedure for ONFH | 4 |
| Vascularized fibular bone graft for ONFH | 3 |
| Triple osteotomy | 2 |
ONFH = osteonecrosis of the femoral head.
