Greater Trochanteric Pain Syndrome

Lateral hip pain — encompasses gluteal tendinopathy (medius, minimus), trochanteric bursitis, external snapping hip. Most common middle-aged women. Features: lateral hip pain, worse on lying on affected side, walking, stairs. Examination: tenderness over greater trochanter; pain on resisted hip abduction; positive Trendelenburg. Differentials: hip OA (groin pain), referred lumbar spine (back + leg pain), iliotibial band syndrome (lateral knee pain extending to hip), meralgia paresthetica (anterolateral thigh sensory). XR: normal hip (excludes OA, fracture); USS / MRI shows tendinopathy + bursitis.