THE SHOULDER- JOINT. 167 



capsule is likewise interrupted opposite the bicipital groove, to give passage to the 

 long tendon of the biceps muscle. 



The coraco-humeral ligament is a strong wide band extending obliquely over 

 the upper part of the articulation ; it springs from the root and outer border of the 

 coracoid process beneath the coraco-acromial ligament, and thence passes to the 

 neck of the humerus above the great tuberosity, being intimately connected with 

 the capsule. 



The coraco-humeral ligament represents a detached portion of the tendon of the pectoralis 

 minor muscle. There is sometimes a small band passing from the coracoid process with this 

 ligament to the upper and hinder margin of the head of the scapula, and known as the 

 corn <<>-</ lett o id I if/ft tnent, 



G-leno-humeral ligaments. These are three bands of fibres in the inner and fore part of 

 the capsule, which project towards the interior of the joint, and are best seen when the 



COBACO-HUM. LIGT. 



SUP. GLENO-HUM. L1CT. 



SUBSCAPULARIS 



Fig. 193. RIGHT SHOULDER-JOINT OPENED FROM BEHIND, TO SHOW THE GLENO-HUMERAL 



LIGAMENTS. (GL D. T. ) 



The hinder part of the capsule has been removed, the head of the humerus sawn off", and the tendon 

 of the biceps divided near its origin. 



articulation is opened from behind. The superior extends from the upper end of the anterior 

 margin of the glenoid cavity, along the inner edge of the biceps tendon, to the inner margin 

 of the upper end of the bicipital groove, where there is sometimes a notch in the edge 

 of the articular surface ; it is supposed to represent the interarticular ligament of 

 the hip-joint. The middle springs from the glenoid margin with the foregoing, and 

 is directed downwards and outwards to the inner side of the small tuberosity of the 

 humerus, forming the lower boundary of the aperture through which the synovial membrane 

 reaches the tendon of the subscapularis muscle. And the inferior, the strongest of the three, 

 takes a similar course from the middle of the anterior margin of the glenoid fossa to the 

 lower part of the neck of the humerus, where it is attached between the subscapularis and 

 teres minor muscles. 



The transverse humeral lig-ament is a small band, forming a continuation of the 

 capsular ligament of the shoulder, which bridges over the bicipital groove between the 

 tuberosities of the humerus, and thus completes a canal for the long tendon of the biceps 

 muscle. (C. Gordon Brodie, Journ. Anat., xxiv, 247.) 



The glenoid ligament is a fibrous band, about two lines thick, which is fixed to 

 the edge of the glenoid fossa, and thus deepens the cavity. The upper part of it is 



