Execution:
- The patient is in standing position and may hold onto the wall for balance
- The patient is asked to flex one hip to 90°
- The examiner assesses the height of the iliac crests on both sides, where the side with the flexed hip should be higher than the other side
Positive Outcome: If the iliac crest on the side with the flexed hip drops lower than the iliac crest on the standing side or patients compensate by leaning the trunk towards the side of the standing leg, this indicates weak abductor muscles (gluteus medius+minimus) on the standing side. Some authors specify a femoral angle of ≤83° on the standing leg with specified time duration of 30s as a positive sign.
| Study | Reliability | Sn | Sp | LR+ | LR- |
| Magee et al. (2014) | NA | NA | NA | NA | NA |
