Answer
The acetabulum is the socket or cup-shaped depression into which the head of the femur fits. Together the acetabulum and the head of the femur form the ball and socket joint called the hip joint or coxal joint.The acetabulum is formed by areas of the ilium, the ischium and the pubis of the coxa.
Connection the lower limb with the axial skeleton is a major function of the acetabulum The hip socket is deeper than the shoulder socket, but the hip joint is still relatively flexible.and allows several types of movements of the thigh and entire lower limb. Stabilizing of the body in a standing position and weight bearing are also important functions of the acetabulum.
Work Step by Step
The acetabulum is formed by parts of the ilium, ischium , and pubis. --these bones are fused in adults. With the head of the femur the acetabulum forms a synovial ball and socket joint that allows the second greatest range of motion among joints of the body. These motions include flexion, extension, abduction, lateral and medial rotation of femur (thigh). The hip joint is very stable being supported by several muscles and ligaments --for instance, the iliofemoral and ischiofemoral ligaments. Some muscles connected to the coxa in this region are the quadriceps, the gluteals and the iliopsoas.
The femur is the strongest bone in the body and is not easily fractured. Damage to the weight-bearing area (roof) of the acetabulum is more common, and is a serious orthopedic condition.
