Basic Anatomy of Hip Joint:

  • The hip joint is composed of a ball and socket joint. The femoral head (ball) is the top of the femur (thigh bone) and the acetabulum (part of the pelvis) is the socket.

  • These surfaces are both covered by articular cartilage, which is a specialized lining allowing smooth pain free motion of the joint. Damage to these lining results in arthritis.

  • The joint is lined by a specialized synovial layer, which secretes fluid helping with lubrication. Inflammation of this layer is called inflammatory arthritis the most common of which is rheumatoid arthritis.

    The labrum is a specialized structure adding to stability of the joint. Damage to this structure can result in catching and pain in the joint.