The hip joint is a ball and socket type joint. The ball is the femoral head and the socket is the portion of the pelvis known as the acetabulum.
There are several components of the hip joint that are important to full motion and regular activity.
MAJOR HIP COMPONENTS
The femoral head and acetabulum are both covered in articular cartilage. This is the cartilage that “wears down” with arthritis.
The labrum is a ring of fibrocartilage that circles around the edge of the acetabulum creating a deeper hip socket and acting a suction cup for the femoral head keeping the joint stable and in place. The labrum also seals in the lubricating joint fluid.
The hip capsule is made up of several hip ligaments that circle the hip joint adding to hip stability.