Table 6 Frequency of failed remodelling and unsatisfactory outcome in relation to the type of AVN.
Type of AVN | Number of hips | Spherical index (mean ± SD) | Failed remodelling (%) | Unsatisfactory outcome (%) | ||
|---|---|---|---|---|---|---|
Preoperative | Final follow-up | p value | ||||
None | 225 | 37.7 ± 4.6 | 44.3 ± 5.0 | < 0.001 | 14 (6.2) | |
1 | 64 | 37.8 ± 4.0 | 45.0 ± 4.5 | < 0.001 | 0 (0) | 3 (4.7) |
2 | 9 | 37.3 ± 4.7 | 46.7 ± 6.5 | 0.001 | 0 (0) | 0 (0) |
3 | 4 | 40.0 ± 3.6 | 45.5 ± 5.2 | 0.026 | 0 (0) | 0 (0) |
4 | 63 | 38.2 ± 5.3 | 42.2 ± 5.1 | < 0.001 | 2 (3.2) | 14 (22.2) |
5 | 29 | 40.3 ± 5.4 | 38.1 ± 8.5 | 0.253 | 15 (51.7) | 10 (34.5) |
