48 
MAMMALIAN ANATOMY 
plane; lateral and medial condyles, with articular surfaces for 
the tibia; lateral and medial epicondyles; intercondyloid fossa; 
articular surface for the patella. 
Tibia. —Note lateral and medial condyles with superior articu¬ 
lar surfaces for the condyles of the femur; dorsal and ventral 
intercondyloid fossae; intercondyloid eminence; articular surface 
for proximal end of the fibula; tuberosity; anterior crest; inter¬ 
osseous crest; medial malleolus; inferior and malleolar articular 
surfaces for the talus; fibular notch for the distal articulation of 
the fibula. 
Fibula. —Note head; apex of head; interosseous crest; lateral 
malleolus; proximal and distal articular surfaces for the tibia, 
articular surface of the malleolus. 
Patella (a sesamoid bone). —Note apex, base, and articular 
surface for femur. 
Tarsus. —Proximal row, consisting of calcaneus and talus; the 
navicular bone, interposed between the talus and the distal row; 
the distal row, consisting of the first (medial), second, and third 
cuneiform bones, and the cuboid bone. Note that the surfaces for 
articulation with the tibia and fibula are located upon the talus, 
which also articulates with the calcaneus, the shelf-like process of 
which (sustentaculum tali) supports the talus from below. Work 
out with care the other intertarsal articulations, and the relation of 
the bones of the distal row to the separate metatarsals (cf. cor¬ 
responding bones of hand). 
Foot. —Note the five digits with ranks of bones as in the case of 
the hand, metatarsals forming the first rank and phalanges the 
remaining ones. Note prominent process on the fifth metatarsal. 
Look for indications, in the forms of the articular surfaces, of less 
movability of the great toe than of the thumb. Note frequency of 
fusion of middle and distal phalanges of the little toe, a general 
human tendency found as often in barefooted races as in those 
wearing shoes, and hence not due, as often asserted, to the latter 
condition. 
D. SUGGESTED SUPPLEMENTARY EXERCISES. 
i. Identification and classification of the articulations, or 
arthroses, immovable (synarthroses), slightly movable (amphi- 
