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Compared the CA between the dislocated hips and unaffected hips in the group of grade II, III and IV according to the classification of Tönnis
| Tönnis grade | Dislocated hips | Unaffected hips | P-value | ||
|---|---|---|---|---|---|
| Mean±SD | Range | Mean±SD | Range | ||
| II | 49.10 ± 6.56° | (40–59°) | 48.47 ± 8.88° | (32–62°) | 0.734 |
| III | 52.73 ± 7.59° | (36–67°) | 45.06 ± 9.57° | (24–62°) | 0.001 |
| IV | 54.01 ± 11.14° | (39–83°) | 42.72 ± 7.14° | (33–57°) | 0.001 |
CA combined anteversion, SD standard deviation
