Femoroacetabular Impingement Syndrome (FAI)
Range of motion (ROM) simulations of the hip joint. The pose of the femur is adjustable. When impingement is detected, the femur is colored red.
Insidious onset of a deep aching pain in the groin
Patients often use their hand to point to their pain with the thumb over the greater trochanter and index finger over the anterior hip – this is termed the ‘C-sign’
Pain is generally worse after activity and with movements involving flexion and twisting
If they can continue activity through their pain this suggests FAI, if not then there is potential for a labral tear.
Flexion and internal rotation are usually restricted and reproduce pain
The flexion, adduction, internal rotation (FADDIR) test for posterior capsule
Flexion, abduction, external rotation (FADER) tests for anterior capsule