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.
Surrounding the hip joint are many tough ligaments that prevent the dislocation of the joint
The hip joint is one of the most important joints in the human body. It allows us to walk, run, and jump. It bears our body’s weight and the force of the strong muscles of the hip and leg.
Yet the hip joint is also one of our most flexible joints and allows a greater range of motion than all other joints in the body except for the shoulder.