Internal snapping hip
Cause
Movement of iliopsoas tendon over femoral head / iliofemoral ridge / iliofemoral ligament
Can be seen following THA with cup impingement
Symptoms
Audible or palpable snap in the groin
Hip moves
- from flexed / abducted / externally rotated position
- to extended / internally rotated position
Incidence
10% of the population - usually painless