Table 2.
Radiographic and overall points between pre‐operation and follow‐up
| Stage | Hips | Radiographs | Total points | ||||
|---|---|---|---|---|---|---|---|
| Pre‐operation | Follow‐up | t value | Pre‐operation | Follow‐up | t value | ||
| IIB | 36 | 30 | 34.31 ± 4.95 | 5.22 | 61.39 ± 4.98 | 88.67 ± 6.39 | 18.01 |
| IIC | 30 | 30 | 32.17 ± 3.39 | 3.50 | 55.67 ± 5.94 | 83.63 ± 4.69 | 20.44 |
| IIIA | 40 | 20 | 30.75 ± 2.13 | 31.87 | 43.90 ± 5.36 | 80.88 ± 3.92 | 35.68 |
| IIIB | 40 | 20 | 27.63 ± 3.39 | 14.21 | 43.25 ± 4.95 | 74.45 ± 5.92 | 24.07 |
| IIIC | 32 | 20 | 24.22 ± 4.60 | 5.19 | 42.06 ± 6.03 | 68.00 ± 6.09 | 18.80 |
| IV | 28 | 10 | 16.96 ± 8.64 | 4.26 | 28.89 ± 4.73 | 57.82 ± 13.14 | 10.59 |
Data expressed as mean ± SD. The differences in scores of each index between pre and post operation were compared by t test by stage and were statistically significant (P < 0.01).