This is a test for evidence of hip arthritis. In this manoeuvre:
If there is early hip osteoarthritis then the abduction of the flexed hip will be restricted and painful. An alternative manoeuvre is to internally rotate the hip with both hip and knee flexed to 90 degrees - internal rotation of the hip joint is the first restriction of movement to occur in hip disease (1).
The FABER test can differentiate sacroiliac joint pathology from hip problems (2).
Reference:
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