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Mean pre- and post-operative hip IR and ER along with average improvement following FDO
| Pre-operative | Post-operative | Improvement | |
|---|---|---|---|
| IR (degrees) | 6.7 (r: 0–15) | 29.7 (r: 15–45) | 23 (P < 0.001) |
| ER (degrees) | 70.6 (r: 45–90) | 43.4 (R: 30–70) | 27° (P < 0.001) |
