Hip Joint Anatomy PDF

# Plate: 477 The hip joint ## Articular surface of the acetabulum * horseshoe shaped ## Articular cartilage * covers the head of the femur and the horseshoe-shaped part of the acetabulum (remember that articular cartilage is part of a synovial joint) # The hip joint cont. 477 ## Ligament of th...

# Plate: 477 The hip joint ## Articular surface of the acetabulum * horseshoe shaped ## Articular cartilage * covers the head of the femur and the horseshoe-shaped part of the acetabulum (remember that articular cartilage is part of a synovial joint) # The hip joint cont. 477 ## Ligament of the head of the femur (a.k.a. ligamentum teres, round ligament, foveal ligament) * connects the head of the femur to the acetabulum ## Acetabular labrum * a fibrocartilagenous lip that attaches to the bony rim of the acetabulum * functions to deepen the acetabulum (make the 'socket' a deeper socket) # The hip joint cont. 477 ## Acetabular fossa * in the centre of the acetabulum * fossa is occupied by a fat pad covered with synovium ## Acetabular notch * a notch between the two ends of the horseshoe * passage for blood vessels ## Transverse ligament of the acetabulum * connects (closes) the acetabular notch # The hip joint cont. 477 ## Ligaments of the hip * all of the capsular ligaments of the hip are coiled or twisted as they pass from the pelvis to the femur (in a neutral position) * extension/hyperextension tightens them further making extension part of the close-packed position and a position of stability in an upright posture * conversely, full hip flexion with abduction is an unstable position # Ligaments of the hip cont. 477 ## Iliofemoral ligament (Y ligament) * attaches: AlIS, acetabular rim <=> intertrochanteric line of the femur * checks extension, abduction, lateral rotation ## Pubofemoral ligament * attaches: superior pubic ramus <=> iliofemoral ligament * checks abduction ## Ischiofemoral ligament * attaches: ischial part of the acetabular rim <=> femoral neck and medial greater trochanter * checks hyperextension