[Plate 479, Bony Attachments of Muscles of Hip and Thigh: Posterior View]page 245
page 246Multiaxial, ball-and-socket synovial joint
Movements
Flexion 140 degrees
Extension 10 degrees
Abduction 45 degrees
Adduction 30 degrees
Internal rotation 40 degrees
External rotation 50 degrees
Acetabulum (see Section 5-2: Pelvis and Perineum: Bones and Ligaments)
Head of femur fits within
Composed of contributions from ilium, ischium, pubis
Deepened by incomplete ring of fibrocartilaginous labrum, which is attached to bony rim
Ring completed by transverse acetabular ligament, which spans acetabular notch
Head of femur
Has a ligamentum teres (ligament of the head of the femur)
Attaches fovea (pit) in head of femur to transverse acetabular ligament
Contains branch from obturator artery
Capsule
Strong, fibrous and loose
Attaches to acetabular labrum, transverse acetabular ligament, intertrochanteric line of femur
Lower third of neck of femur is extracapsular.
Strengthened by ligaments
Iliofemoral (Y-shaped)
Pubofemoral
Ischiofemoral ligaments
Blood supply (see Section 7-6: Lower Limb: Neurovasculature)
Medial and lateral circumflex arteries from deep branch of femoral or femoral artery
Artery of head of femur (minor contribution)
Nerve supply
Femoral nerve