| Quadruped rock back | On hands and knees, pull in abs, rock back toward heels. | Improve hip flexionElongate short piriformis | 3 times per week | 15 times, hold for 10~15 seconds at end 2 set |
| Side-lying hip IR with sandback (3 kg) | Pull in abs.Move in hip joint onlyDo not let pelvis rotateAlternately for both side | Strengthen hip internal rotators, Elongate short piriformis | 3 times per week | 15 times, hold for 10~15 seconds at end Start without weight and build gradually weight 2 set |
| Prone hip IR | Pull in abs.Do not let pelvis rotationAlternately for both side | Elongate short piriformis | 3 times per week | 15 times, hold for 10~15 seconds at end 1 set |
| Sitting hip flexion | Pull in abs.Do not let pelvis posterior rotateAlternately for both side | Strengthen hip flexors | 3 times per week | 15 times, hold for 10~15 seconds at endAs tolerated, gradually increase ROM 2 set |