Strains on the muscles round the hip and pelvis may cause pain and spasm. The commonest strains are groin pulls and hamstring strains. Osteochondritis Dissecans: Separation of a bone fragment and cartilage during the knee on account of lowered blood offer Good results depends on following the rehabilitation prepare persistently https://www.theorthopaedicandpainpractice.com/i-have-pain-over-the-front-of-my-hip-do-i-have-femoral-acetabular-impingement/