762 



MUSCLES OF THE LEG. 



FIG. 251. 



the heads of the gastrocnemii to the external condyle, 

 which has been called the posterior ligament, or ligament 

 of Winslow. 



MUSCLES OF THE LEG. 



Those on the anterior and outer leg. Dissection. Make 

 an incision from the knee joint along the middle of the 

 leg between the tibia and fibula, over 

 the ankle joint along the dorsum of the 

 foot to the toes. Make a second incision 

 crossing the first transversely over the 

 ankle joint. Turn aside the integument, 

 and then the fascia, when the muscles 

 will be exposed. 



The tibialis anticus (Fig. 251) arises 

 fleshy from the head of the tibia, the 

 outer edge of its anterior spine for about 

 two-thirds of its length, the interos- 

 seous ligament and fascia of the leg. 

 A large fleshy muscle is formed, which 

 ends in a strong tendon that passes 

 through a distinct ring of the annular 

 ligament, in front of the malleolus inter- 

 nus, goes to be inserted into the base of 

 the internal cuneiform bone at the inner 

 side of the foot, and also into the adjoin- 

 ing base of the metatarsal bone of the 

 great toe. A bursa is seen beneath the 

 tendon, where it goes through the annu- 

 lar ligament. Function. To flex the 

 foot and turn it obliquely inward. 



The extensor communis digitorum pedis (Fig. 25Y) arises 

 fleshy and tendinous from the outer head of the tibia, from 



FIG. 251 represents the Muscles on the front of the Leg. 1 Quadriceps 

 femoris tendon. 2 Spine of the tibia. 3 Tibialis anticus. 4 Extensor com- 

 munis digitorum. 5 Extensor proprius pollicis. 6 Peroneus tertius. 7 Pero- 

 neus longus. 8 Peroneus brevis. 9 9 Edges of the soleus. 10 Gastrocnemius. 

 11 .Extensor brevis digitorum. 



