Purpose: To assess for labral impingement posteriorly.
Test Position: Supine (in Thomas Test position).
Performing the Test: With the patient in the Thomas test position, place the affected limb in extension, lateral rotation, slight abduction and apply an overpressure into extension. Anterior hip pain is considered a positive test for posterior impingement of the labrum.
Diagnostic Accuracy: Unknown.
Importance of Test: The test works by compressing the posterior labrum between the posterior side of the femur and the posterior rim of the acetabulum. While the test is for labral impingement, pain will be produced from posterior femoral acetabular impingement as well, which predisposes individuals to labral tears as well.
Note: these tests should only be used by properly trained health care practitioners.