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Femoral head coverage according to Catterall group and treatment
| Time | Femoral head coverage (%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Catterall Group 3 | Catterall Group 4 | |||||||||
| Femoral osteotomy group | Control group | p value | Femoral osteotomy group | Control group | p value | |||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | |||
| At diagnosis | 86.4 | 9.9 | 90.4 | 8.6 | 0.094 | 81.1 | 14.3 | 83.5 | 15.1 | 0.603 |
| 1-year followup | 86.3 | 14.3 | 81.3 | 6.3 | 0.069 | 83.2 | 15.7 | 75.6 | 7.2 | 0.059 |
| 5-year followup | 79.0 | 11.0 | 81.9 | 6.7 | 0.178 | 77.7 | 12.8 | 69.8 | 8.1 | 0.015 |
