THE ARTICULATIONS OF THE UPPER LIMB 



203 



Shaft of the humerus 



Head of the humerus 



Tendon of the long head of the biceps muscle 



Coracoid process 

 Proc. coracoideus 



Aperture by which the bursa of the 

 subscapularis muscle communicates 



with the shoulder joint 

 Glenoid fossa of the scapula 

 Cavitas glenoidalis scapulae 



Glenoid ligament 

 Labrum glenoidale 



Superior angle of the scapula 



Angulus medialis scapulae 



Capsular ligament 



Capsula articularis 



Subdeltoid or subacromial bursa 

 Bursa subdeltoidea 

 Tendon of the supraspinatus muscle 



Tendon of the infraspinatus muscle 



Synovial membrane 



Pars synovialis capsulae 



articularis 



Glenoid ligament .. 



Labrum glenoidale 



Infraglenoid tubercle 



Taberositas infraglenoidalis 



Long head of the triceps muscle.... 



Teres minor muscle 



Subscapularis muscle 



FIG. 436. ARTICULATIO HUMERI, SHOULDER-JOINT: INTRACAPSULAR PORTION OF THE TENDON 

 OF THE LONG HEAD OF THE BICEPS MUSCLE; LABRUM GLENOIDALE, GLENOID LIGAMENT; 

 APERTURE OF COMMUNICATION OF THE BURSA OF THE SUBSCAPULARIS MUSCLE WITH THE 

 SHOULDER-JOINT; RELATIONS OF THE TENDONS OF THE SCAPULAR MUSCLES WITH THE 

 CAPSULE OF THE SHOULDER-JOINT. (RIGHT SHOULDER-JOINT FROM THE OUTER SIDE) 



After tallow had been injected into the joint and allowed to harden, the capsular ligament and the 

 surrounding scapular muscles were divided by a circular incision midway between their attach- 

 ments to the scapula and the humerus, a strip of the capsule, however, being left undivided, 

 where the tendon i>f the long head of the biceps muscle passes through the joint. The humerus 

 with the distal half of the capsule has been turned upwards. 



Articulatio humeri Shoulder-joint. 



262 



