C.H. 



FIG. 63. i. Upper end of right humerus from above. Shows the attachment of the coraco-humeral liga- 

 ment, C.H., along the upper end of the bicipital groove or notch, and how it is continuous with the 

 general capsule at the anatomical neck ; at this continuity in front the thin fibres of the superior gleno- 

 humeral ligament, deep to the proper capsular fibres, reach the bone at the fovea humeri. 2. Front 

 and inner view of lower end of right humerus. /". is the area of origin of the superficial flexors of the 

 forearm. L. is the area of attachment of the anterior fasciculus of the internal lateral ligament ; this 

 is continuous with the fibres of the anterior capsule at the edge of the trochlear eminence. The liga- 

 mentous structures do not encroach on the trpchlea, which is therefore altogether covered by synovial 

 membrane or cartilage ; the extent of the cartilaginous area is shown in Fig. 63. It can easily be 

 appreciated that the anterior band of the lateral ligament is attached at L. in what is practically the 

 axis of the movement of the ulna on the humerus, and hence this strong band can be tight in ordinary 

 humero-ulnar movements and serve to maintain the bones in position. 3. The external condyle 01 

 the right humerus. The point of bone E. gives origin to the Extensor carpi radialis brevior and super- 

 ficial Extensors of the forearm ; these also arise from the ligaments which are attached to the rough 

 area immediately below E. The ligaments are shown in sitd in Fig. 72. The whole rough area is for 

 the ligamentous tissue. The origin of Anconeus is generally larger than is shown in the figure. X. marks 

 the attachment of the cruciate ligament. 4. Lower end of left humerus at birth, from the front. The 

 whole of the lower end is cartilaginous. The capsule is attached partly on bone and partly on cartilage, 

 so that separation of the cartilaginous end would involve opening of the joint. Observe the definite 

 indication of the two parts of the composite joint cavity, radial and ulnar. 



