Table 1 Baseline characteristics of the children in the study
Characteristic | Total n = 101 (hips, n = 119) |
|---|---|
Gender (male/female) | 12/89 |
Side (left/right/bilateral) | 49/34/18 |
Preoperative IHDI grade (II/III/IV) | 10/67/42 |
Preoperative AI (degree) | 40.3 |
Mean age at surgery (months) | 17 |
All types of AVN (Group A/B) | 21/18 |
Significant AVN (Group A/B) | 18/10 |
Severe AVN (Group A/B) | 12/3 |
Mean follow-up time (months) | 104.9 |