Fovea capitis

Fovea Capitis

The Fovea Capitis is a small, pit-like depression located at the center of the head of the femur, which is one of the largest bones in the human body and plays a crucial role in supporting the weight of the upper body and facilitating leg movements. This anatomical feature is significant in the context of the hip joint's structure and function, contributing to the attachment of the ligamentum teres, a ligament that plays a role in the stability of the hip joint.

Anatomy

The Fovea Capitis is situated on the head of the femur, which articulates with the acetabulum of the pelvis to form the hip joint. This joint is a ball-and-socket type, allowing for a wide range of movement in multiple directions. The fovea capitis, despite its small size, is an important landmark because it is the point of attachment for the ligamentum teres of the hip. This ligament extends from the fovea capitis to the acetabular notch on the pelvis, and although it is not the primary stabilizing ligament of the hip, it contains a small artery that supplies blood to part of the femoral head.

Function

The primary function of the Fovea Capitis is to serve as the attachment site for the ligamentum teres. This ligament contributes to the stability of the hip joint, particularly in positions of hip flexion. Additionally, the artery within the ligamentum teres provides a vital blood supply to the femoral head, which is crucial for the nourishment and health of the bone tissue.

Clinical Significance

The Fovea Capitis and its associated structures can be involved in various clinical conditions. Avascular necrosis (AVN) of the femoral head is a condition where the blood supply to the bone is compromised, leading to bone tissue death and potentially causing severe pain and arthritis. Since the artery within the ligamentum teres supplies blood to part of the femoral head, damage or disruption to this artery can contribute to the development of AVN.

Injuries to the ligamentum teres, such as tears, can also occur, leading to hip pain and instability. These injuries are often associated with trauma or sports-related activities and may require medical intervention for diagnosis and treatment.

See Also

• Femur
• Hip joint
• Ligamentum teres
• Avascular necrosis