OSTEOLOGY 41 



or apex, is connected with the tibia by the tendo patella. 

 The posterior surface of the bone presents two facets 

 which articulate with the condyles of the femur. The 

 anterior surface is separated from the skin by a bursa; 

 when this bursa is enlarged the condition is known as 

 "house-maids' knee." 



THE FOOT 



The foot is divided into the tarsus, which consists of 

 7 bones, the metatarsus, consisting of 5 bones, and the 



FIG. 22. Bones of the right foot, dorsal surface : i, Astragalus ; 2, head 

 of the astragalus; 3, os calcis ; 4, navicular bone; 5, internal cuneiform; 

 6, middle cuneiform ; 7, external cuneiform ; 8, cuboid ; 9, metatarsal bones; 

 10, ii, 12, 13, 14, phalangeal bones (Leidy). 



phalanges, 14 in number, making a total of 26 bones. 

 They are placed in two rows. The uppermost bone of the 

 tarsus is called the astragalus and articulates with the 

 tibia and fibula. 



