Table 2. Comparison of the ischiofemoral space (IFS, mm) in different positions between the ischiofemoral impingement case group and the normal control group.
| Groups | Supine with adduction | Adduction with 30° external rotation | 30° internal rotation | Supine with 30° flexion | Prone with 30° backward extension |
|---|---|---|---|---|---|
| Case group | 12.4±3.9 | 10.9±2.9 | 25.1±6.5 | 47.2±6.1 | 8.9±3.4 |
| Control group | 21.0±4.9 | 16.7±6.5 | 33.1±8.8 | 51.9±11.0 | 14.8±4.9 |
| t | –11.07 | –6.86 | –5.96 | –3.07 | –8.25 |
| P | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 |
The difference was statistically significant (P<0.05).