Acetabular fossa

Acetabular fossa is a deep, cup-shaped structure found in the hip joint. It is part of the acetabulum, which is a socket that connects the femur (thigh bone) to the pelvis. The acetabular fossa is filled with fatty tissue and is covered by a thin layer of hyaline cartilage, except at its center, which is occupied by the ligamentum teres, a ligament of the hip joint.

Etymology

The term "acetabular" is derived from the Latin word "acetabulum," which means "little vinegar cup." The term "fossa" is also Latin in origin and means "ditch" or "trench."

Anatomy

The acetabular fossa is located at the bottom of the acetabulum, which is itself part of the pelvic bone. The fossa is roughly circular in shape and is the deepest part of the acetabulum. It is surrounded by the lunate surface, an articular cartilage-covered section of the acetabulum that articulates with the femoral head.

Function

The primary function of the acetabular fossa is to accommodate the ligamentum teres, which attaches the femur to the acetabulum. This ligament plays a crucial role in maintaining the stability of the hip joint.

Clinical significance

Damage or disease affecting the acetabular fossa can lead to hip pain and mobility issues. Conditions such as osteoarthritis can cause the cartilage lining the fossa to wear away, leading to pain and stiffness. In severe cases, surgical intervention may be necessary to repair or replace the damaged joint.

See also

• Hip joint
• Acetabulum
• Ligamentum teres

Acetabular fossa Resources
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