acetabular part of hip bone

acetabular region

The acetabulum is a concave surface of the pelvis. The head of the femur meets with the pelvis at the acetabulum, forming the hip joint. There are three bones of the os coxae (hip bone) that come together to form the acetabulum. Contributing a little more than two-fifths of the structure is the ischium, which provides lower and side boundaries to the acetabulum. The ilium forms the upper boundary, providing a little less than two-fifths of the structure of the acetabulum. The rest is formed by the pubis, near the midline. It is bounded by a prominent uneven rim, which is thick and strong above, and serves for the attachment of the acetabular labrum, which reduces its opening, and deepens the surface for formation of the hip joint. At the lower part of the acetabulum is the acetabular notch, which is continuous with a circular depression, the acetabular fossa, at the bottom of the cavity of the acetabulum. The rest of the acetabulum is formed by a curved, crescent-moon shaped surface, the lunate surface, where the joint is made with the head of the femur. Its counterpart in the pectoral girdle is the glenoid fossa.[WP,unvetted].

Tür Bone
Latince Adı acetabular region
FMA ID 16579

Sıkça Sorulan Sorular

What is the acetabular part of the hip bone?
The acetabular part of the hip bone is the concave, cup-shaped surface of the pelvis that forms the socket of the hip joint (acetabulum). It articulates with the head of the femur to form the hip joint.
What bones contribute to the acetabulum?
The acetabulum is formed by contributions from all three bones of the hip: the ilium forms the upper boundary (approximately two-fifths), the ischium forms approximately two-fifths (posterior and inferior portions), and the pubis forms approximately one-fifth (anterior portion).
What is the structure of the acetabulum?
The acetabulum has a deep articular surface (the lunate surface, covered with hyaline cartilage) and a central non-articular depression (the acetabular fossa, which contains fat and the ligamentum teres). The rim is incomplete inferiorly at the acetabular notch.
What holds the femoral head in the acetabulum?
The femoral head is held in the acetabulum by the labrum acetabulare (fibrocartilaginous rim increasing depth), the ligamentum teres (round ligament), and the joint capsule reinforced by the iliofemoral, pubofemoral, and ischiofemoral ligaments.
What is the clinical significance of acetabular anatomy?
Acetabular fractures are common in high-energy pelvic trauma and are classified by the involvement of anterior and posterior columns. Developmental dysplasia of the hip (DDH) involves abnormal acetabular morphology, affecting coverage of the femoral head.

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Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.