104 THE MUSCLES. 



muscle occupies the whole of the inner and upper surfaces of the 

 tibio-fibula, from which it arises by numerous fibres. Opposite the 

 hinder extremity of the bone the muscle becomes free and passes 

 somewhat abruptly into a tendon, which courses behind and over the 

 malleolus internus, on to the dorsum of the foot, and is here inserted 

 into the anterior extremity of the astragalus. I cannot agree with 

 Duges that this muscle corresponds with the salens (Ecker). 



129. M. extensor cruris brevis (Fig. H7 ec). 



Dugès, pre-temoro- tibial, n. 154. 



Covered by the sivong fascia cruris, and lying between the vi. ti- 

 bialis autieus and the tibio-fibula, this muscle arises by a long tendon 

 from the inner condyle of the femur ; it passes backwards in the 

 groove on the anterior extremity of the tibio-fibula, covered by the 

 tendon of the triceps femoris, and is then inserted by muscular 

 fibres into the outer surface of the tibio-fibula almost as far as the 

 posterior third of the bone. (Dugès regards this muscle as the 

 upjDcr^ i. e. anterior, portion of the titnalis anticus.) 



130. M. titjialis autieus (Figs. 80, 81, 87 ta). 



Dugès, pré-féinoro-astragalien and pré-fémoro-calcanien, n. 156 and 157; 

 the former he regards as one part of the lib. autieus, the latter 

 as the peroneus longus I. — Zenker, tih. ant. biceps. 



The tendon of origin of this muscle is attached to the femur near 

 the tendon of the m. extensor cruris hrevis, a;nd to the joint-ligaments. 

 The muscle is placed under the fascia cruris, its long tendon of 

 origin passing beneath the tendon of the triceps in a si)ecial sheath 

 through the joint ; the tendon then gains a muscular belly which 

 bifurcates at about the middle of the leg, forming two muscular 

 masses, coursing along the outer and the inner side of the leg re- 

 spectively. The latter is inserted into the dorsal surface of the astra- 

 (jalus by a tendon, and the former into the dorsal surface of the 

 calcaneus in a similar manner. The muscle extends the foot and 

 flexes the tarsus ; the latter movement is very distinct on account of 

 the insertion of the muscle being so near the hi/pomochlion. 



131. M. flexor tarsi anterior (Ecker), (Fig. 87 Ft). 



Dugès, ex-tibio-astragalien, n. 155. — Zenker, tibialis anticus simplex. 



This muscle arises where the insertion of the extensor cruris brer 

 ceases, from the middle of the under surface of the tibio-fibula, and 

 passes backwards between the two tendons of the m. titnalis anticus 

 along the outer side of this muscle, to be inserted by a tendon 



