RADIO-ULNAR JOINTS 



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fossa of the humerus to the anterior margin of the upper aspect 

 of the olecranon process of the ulna. 



Internal Lateral Ligament is arranged in three parts, forming 

 a triangle : (1) From anterior border of inner condyle to the 

 margin of the coronoid process; (2) from the inferior and 

 posterior border of the condyle to the olecranon process ; ami 

 (3) from the olecranon process to the coronoid process. 



External Lateral Ligament, from the lower border of the outer 

 condyle of the humerus to the orbicular ligament on the radius. 



MUSCLES ACTING ON THE ELBOW-JOINT. 



Cartilage covers the articular surfaces of the joint as usual, 

 but is not prolonged into the fossae on the humerus, where pads 

 of fat are placed. There is also a narrow gap in the cartilage 



