There's a myth that FAI cannot be treated effectively without surgery. Impingement occurs when the ball shaped head of the femur rubs abnormally or pinches (impinges) the acetabular socket. Damage to the hip joint can occur to the articular or labral cartilage. Impingement People with FAI usually present with pain (or sometimes a dull ache) in the inguinal/groin area and sometimes more toward the outside of the hip. Sharp stabbing pain may occur with turning, twisting, and squatting. FAI occurs because the hip bones do not form normally during childhood in the growing years. The deformity of a CAM bone...