ANATOMY OF ACETABULUM On the outer surface of the hip bone is a deep depression, called the acetabulum, the large cup-shaped acetabulum for articulation with the head of the femur is on the lateral surface of the pelvic bone in the region where the ilium, pubis, and ischium fuse. The articular surface of the acetabulum is limited to a horseshoe-shaped area and is covered with hyaline cartilage. The floor of the acetabulum is non-articular and is called the acetabular fossa The margin of the acetabulum is marked inferiorly by a prominent notch (acetabular notch). The wall of the acetabulum consists of non-articular and articular parts: ■ the non-articular part is rough and forms a shallow circular depression (the acetabular fossa) in central and inferior parts of the acetabular floor — the acetabular notch is continuous with the acetabular fossa; ■ the articular surface is broad and surrounds the anterior, superior, and posterior margins of the acetabular fossa. EPIDEMIOLOGY ...
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