- Hip joint: ball-and-socket synovial joint between the head of femur and the acetabulum of the hip bone; connects pelvic girdle to lower limb.
- Largest ball-and-socket joint in the body; multiaxial, though its movement range is restricted by its weight-bearing role, second only to the shoulder joint in mobility.
Articular Surfaces
- Head of femur (more than half a sphere, fovea capitis for the ligamentum teres) articulates with the acetabulum's horseshoe-shaped lunate surface, deepened by the acetabular labrum.
- The two articular surfaces are reciprocally curved but not co-extensive.
articular surfaces of the hip joint Articular surfaces of the hip joint.