A Answers (2)
In hip impingement, or femoroacetabular impingement (FAI), bone spurs develop around the femoral head and/or along the hip socket of the pelvis. Over time, this can result in tearing of the labrum and breakdown of articular cartilage, the smooth covering over the edge of the femur head. FAI may cause pain in the groin area or the outside of the hip. Sharp stabbing pain may occur with turning, twisting and squatting.
Hip impingement is a general term for the compression of structures, including muscles, ligaments, veins, arteries, and nerves. The compression of these structures -- mainly the femur and the acetabulum (hip socket) -- results in pain, and may also cause stiffness and a pinching sensation.
(This answer provided for NATA by the University of Tampa Athletic Training Education Program)