1894.] AS^ATOMX OF PAIiAMEDEA COKIfTJTA, 551 



Gastrocnemius.— The outer head is entirely tendinous, and arises 

 from the femur distal to the long head of the biceps sling. The 

 short arm of the biceps sling arises from the underside of this 

 head of the gastrocnemius very close to its origin. From this 

 short arm of the sling a broad tendinous band, thicker at the lower 

 edge, runs in to join the origins of the perforated and perforating 

 muscles. The outer head becomes tendinous halfway dowTi the 

 leg, and joins the tendo Achillis just above the ankle. The middle 

 head arises tendinously from the inner condyle of the femur in 

 common with the accessory semitencUnosiis, with which it is fused. 

 It is joined by the outer adductor and by the tendon of the serai- 

 tendinosus. This muscle then passes into a tendon which joins 

 the tendon of the tibial head halfway down the leg. The 

 inner or tibial head arises fleshy from the crista tibice and from 

 tlie fascia covering the iieroneus lonr/us ; it then joins the middle 

 head. It is the broadest and strongest part of the (jastrocnemius. 



Soleus. — This small muscle arises by a fleshy head from the 

 tibia for a space of three quarters of an inch below its head on the 

 inner face. Its long slender tendon is inserted on the under and 

 inner surface of the ankle-cartilage. 



Peroneus lowjus. — This arises from the fascia covering the tibialis 

 anticus, and from a small part of the upper end of the iibula, from 

 the fascia over the knee-joint, and from the septum between itself 

 and the perforated and perforating flexor of the index. Its broad 

 thin tendon sends a wide fork to the cartilage of the ankle-joint, 

 and a narrower tendon which joins the tendon of the perforated 

 muscle of the third digit. 



Tibialis anticus. — This has two muscular bellies : the smaller and 

 rounder arises by a strong tendon from the outer condyle of the 

 femur ; the inner springs fleshy from the crista tibiae. The 

 muscular part of the two heads unite halfway down the leg, and 

 give rise to a strong tendon which is bifid just at its insertion. 

 Through this fork a nerve passes. 



Extensor communis digitorum. — This arises fleshy from the tibia 

 from its crest and from halfway down the shaft exactly under the 

 tibial head of the tibialis anticus. Its tendon passes through 

 first a bony and then a membranous bridge, and then runs down 

 the anterior surface of the foot. Halfway down the tarsus meta- 

 tarsus it divides in two. Each branch again forks. The forks of 

 one branch are inserted on the second and third digits ; the forks 

 of the other branch on the third and fourth digits. 



Peroneus brevis. — This very slender muscle arises from the ante- 

 rior face of the fibula and a small portion of the tibia. Its tendon 

 is inserted on to a knob on the outer side of the tarsus metatarsus. 



Flexor perforans et perforatus indicus. — In the woodcut the 

 perforated and perforating flexors are distinguished by the figure 

 2 placed before the roman number, Avhich indicates the digit 

 to which they are attached, while the perforated flexors are dis- 

 tinguished by the figure 1 correspondingly placed. This is the 

 most superficial of the flexors ; it arises from the outer condyle of 



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