MUSCLES OX THE FROXT OF THE LEG. 



179 



The muscle is subaponeurotic. It lies at first outside the tibia, parts in 

 resting on the interosseous membrane ; but it is then placed cc 

 successively over the end of the tibia, the ankle-joint, and the inner 

 tarsal bones. On its outer side are the extensor muscles of the toes, 

 and the anterior tibial vessels and nerve. 



Art ion. Supposing the foot not fixed, the tibialis bends the use on the 



fnnt. frpo 



ankle, and raises the inner border of the toot. 



foot, free 



Peroneus tertius. 



Tendon of peroneus 



longus. 

 Tendon of peroneus 



brevis. 

 Tendons of extensor 



longus digitorum. 



Extensor expansions.- 



Extensor longus 



digitorum. 

 Sartorius. 

 Gracilis. 



Semitendinosus. 

 Tibialis posticus. 



Extensor longus 

 hallucis. 



FIG. 67. MUSCLES ON THE 

 FRONT OF THE LEG. 



FIG. 68. THE TIBIA AND FIBULA 

 FROM THE FRONT. 



If the foot is fixed, it can, with the tibialis posticus, lift the inner and fixed 

 border and support the foot on the outer edge. 



If the tibia is slanting backwards, as when the advanced limb 

 reaches the ground in walking, it can bring forwards and make 

 steady that bone. 



The EXTENSOR PROPRIUS HALLUCIS is deeply placed at its origin 

 between the former muscle and the extensor longus digitorum, but haifucis ; 

 its tendon becomes superficial on the dorsum of the foot. The 

 muscle arises from the middle two-fourths of the narrow anterior 



N 2 



