Plate XX.— The Elbow Jolnt (Outer Aspect).— The Bones 

 I. Inner condyle of humerus. 2. Ridge from which part of extensor metacarpi magnus arises. 

 3. Entrance to olecranon fossa. 4. Pit tor origin of extensor pedis and part of extensor 

 metacarpi magnus. 5. Summit of olecranon process of ulna. 6. Coronoid fossa. 7. Pit 

 for attachment of external lateral ligament. 8. Articular surface of humerus. 9. Edge of 

 articular surface ol radius. 10. Coronoid process. 11. Radioulnar arch. 12. Bicipital 

 tuberositv. 



