748 



TARSUS. 



and has the ligamentum patellae attached to it. Its ante- 

 rior surface is convex, perforated with foramina, and has 

 a bursa. Its posterior is smooth, covered with cartilage? 

 and doubly concave for articulation with the condyles of 

 the femur. It is developed by a single point, during the 

 third year. 



SECTION III. 

 BONES OF THE FOOT, (Fig. 243.) 



A FIG. 243. B These are divided 



into the tarsus, meta- 

 tarsus, and phalanges. 

 The tarsus consists of 

 seven bones the astra- 

 galus, os colds, os navi- 

 culare, internal, external 

 and middle cuneiform, 

 and the cuboid bone. 



The astragalus (<w- 

 tfpaycaoj, a die) is situa- 

 ted between the tibia 

 and os calcis, occupy- 

 ing the upper portion 

 of the instep. Its up- 

 per surface is smooth, 

 and arched for articu- 

 lating with the tibia. Its lower surface presents two artic- 



FIG. 243, A represents the Dorsal surface of the Foot, a Astragalus. 6 

 Point of articulation with the naviculare. c Os-calcis. d Os-naviculare, or 

 scaphoides. e Internal cuneiform. / Middle cuneiform, g External cunei- 

 form, h Cuboid bone, i Metatarsal bones, j First phalanx of the great toe. 

 k Second phalanx of the great toe. I m n First, second, and third phalanges 

 of the other toes. 



FIG. 243, B represents the Plantar surface of the Foot, a Lesser apophysis 

 of the calcis. 6 Exterior edge of calcis. c Groove for the tendon of the 

 flexor longus pollicis pedis. d Anterior portion of astragalus, e Naviculare. 

 / Its inner side and tuberosity. g Internal cuneiform, h Middle cuneiform. 

 t External cuneiform bone, j Cuboid bone, k Groove for tendon of pero- 

 neus-longus. II Metatarsal bones, m n o First, second, and third phalanges 

 of the toes, p Last phalanx of the great toe. 



