Hip joint Articular surface the head of the femur, acetabulum of the hip bone Ball-and socket type transverse acetabular Structures ligament 1 transverse acetabular ligament a fibrous band that bridges the acetabular notch Hip joint Articular surface the head of the femur, acetabulum of the hip bone Ball-and socket type Structures 1 transverse acetabular ligament a fibrous band that bridges the acetabular notch transverse acetabular ligament