THE TIBIA 115 
medial ligament and the sartorius and gracilis muscles; below this it is narrower, 
convex from edge to edge and subcutaneous. The lateral surface (Facies lateralis) 
is smooth and somewhat spiral. It is wide and concave in its proximal fourth, 
Fig. 95.—Ricur Trista anp Fisuta or Horse; Lat- Fic. 96.—Rieutr Trsia AND Frauta or Horse; Poste- 
ERAL VIEW. = 
1, Tuberosity; 2, suleus muscularis; 3, crest; 4, 
spine; 5, lateral condyle; 6, head of fibula; 7, impres- 
sion of anterior tibial vessels; 8, shaft of fibula; 9, lat- 
eral border of tibia; 10, lateral malleolus; 11, groove 
for lateral extensor tendon. 
RIOR VIEW. 
1, Medial condyle; 2, lateral condyle; 3, spine; 4, 
fossa for anterior cruciate ligament; 5, popliteal notch; 
6, tubercle for posterior cruciate ligament; 7, head of 
fibula; 8, vascular impression; 9, interosseous space; 
10, shaft of fibula; 11, muscular lines; 12, tubercle; 13, 
nutrient foramen; 14, medial malleolus; 15, groove for 
tendon of flexor digitalis longus; 16, lateral malleolus. 
below which it becomes narrower and convex, and winds gradually to the front of 
the bone; near the distal end it widens a little, becomes flat, and faces forward. 
The posterior surface (Facies caudalis) is flattened, and is divided into two parts 
by the rough popliteal line (Linea poplitea), which runs obliquely from the proxi- 
