HIP-JOINT 



Transverse flexion and extension. 



Antero-posterior abduction and adduction. 



Vertical rotation in and out. 



Ligaments. The Transverse Ligament is composed of strong 

 fibres, which bridge across the notch in the margin of the 

 acetabulum, leaving a gap through which vessels and nerves can 

 pass. 



The Cotyloid Ligament surrounds the margin of the aceta- 

 bnlum and deepens the socket. Its free edge is somewhat 

 constricted, and grasps the head of the femur. 



Pubo-femoral Band 



.interior Inferior Iliac Spine 



Ilio-femoral Band 

 (Y Ligament 

 of Bigelow; 



Anterior 



Obturator Membrane 



FIG. 18. HIP- JOINT. 



A capsule completely surrounds the joint. It is considerably 

 thicker superiorly. This capsule differs from that of the 

 shoulder- joint in not allowing the ball to be drawn from the 

 socket to any considerable extent. The ligament is attached 

 above to the margin of the acetabulum and below to the cotyloid 

 and transverse ligaments. On the neck of the femur it is 

 attached above to the root of the great trochanter, in front to 

 the intertrochanteric line, below to the root of the small tro- 

 chanter, and behind a little way above the intertrochanteric 

 ridge. The fibres of the capsule are arranged in both the 

 circular and longitudinal directions to give additional strength, 



