i6 



THE SUPERIOR EXTREMITY 



it is impossible to separate them from it. Additional support 

 is received from the subscapularis in front, the supra-spinatus 

 above, and the infra-spinatus, and to a lesser degree the teres 



FIG. 5. Shoulder of a Child, aged six. Antero-posterior view. The centre 

 of ossification for the greater tubercle has not yet fused with the centre 

 for the head of the humerus. The radiogram shows a fracture through 

 the surgical neck of the bone. Compare the position of the head of the 

 humerus with that shown in Fig. 7. 



minor, behind. Inferiorly, the capsule pouches downwards 

 when the arm is by the side, an arrangement which permits of 

 free abduction. It is here intimately related to the quadrilateral 



