Which test is commonly used to evaluate hip impingement pathology including iliopsoas involvement?

• A. Ober test
• B. Thomas test
• C. FADIR test
• D. Log-roll test

Answer: (C)

Testing hip impingement often relies on provocative maneuvers that reproduce anterior joint pain by loading the femoroacetabular space. The FADIR maneuver—placing the hip in flexion, adduction, and internal rotation—narrows the anterior acetabulum and femoral head-neck junction, so any cam or pincer impingement, as well as irritation of the iliopsoas tendon crossing the joint, tends to provoke pain. This direct anterior impingement mechanism makes it the most reliable test for detecting impingement pathology with Iliopsoas involvement, more so than tests that assess IT band tightness, general hip flexor tightness, or intra-articular instability without specifically targeting impingement.