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Comparison of avascular necrosis in selected groups.
| Variable | Hips, n | Kalamchi grade of AVN, n | |||
|---|---|---|---|---|---|
| I | II | III | IV | ||
| Total cohort | 67 | 21 | 1 | 3 | 1 |
| Successful closed reduction | 35 | 8 | 0 | 0 | 0 |
| Failed closed reduction, total | 32 | 13 | 1 | 3 | 1 |
| Failed closed reduction and procedure abandoned | 21 | 7 | 1 | 1 | 1 |
| Re-dislocated | 11 | 6 | 0 | 2 | 0 |
