3 60 



Muscles of the Leg. 



M. solcus 



Faeies medialis tibiao 



M. flexor diiiitoruiii lonsus 



M. tibialis iiosterior 



M. flcxoi' hallucis loiigus 



Tc'iido calcaneus fAcbillisi 

 Liganicntniu cruciatum cruris 



Malleolus medialis 

 Ligamentuiii cruciatum cruris 



Fascia cruris (cut off) 

 Tendo m. tibialis anterioris 



Tciido 111. extensoris ballucis 



Os mctatarsale I 



M. abductor ballucis 



Ligameiitiim laciniatum 

 (supertioial layer) 



Partition- wall I 

 Ligamentum laciniatum (deep layer) 



Bursa tendinis 

 calcanei [.\cbillis] 



405. Muscles of the right foot, 



viewed from the medial surface. 



M. abductor hallucis (see also Figs. 39S 401 aud 404). Form: tiat, (ibknig-tnangiilar. 

 Position: superficial ou the medial margin of the sole of the foot; bounded lateralward by 

 the mm. flexdr digitorum brevis and flexor hallucis brevis. Origin: medial surface of the 

 tuber calcanei, supei'ficial layer of the lig. laciniatum and malleolus medialis ; also from the 

 tuberositas oss. navicularis aud the plantar surface of the os cuneiforme I. Insertion: the 

 fibers converge to a tendinous strip, lying in the muscle, which goes over into a flat strong 

 tendon : this is fused in front with the medial belly of the m. flexor hallucis brevis and goes 

 to the medial sesamoid bone and to the base of the first phalanx of the great toe. Action: 

 it draws the first phalanx of the great toe medianward aud plautarward. Innervation: 

 n. 2)lantaris medialis. 



Ligamcufuin laciniatum (0. T. internal annular ligament) (see also Figs. 2()8, 394. 

 395, 400, 406 aud 4UTj is a strengthening band in the luwer part of the fascia cruris, below 

 and behind the malleolus medialis. It goes off from the posterior and inferior margins of the 

 malleolus medialis, covers the tendon of the m. tibialis posterior and becomes attached to the 

 subjacent bone; it then divides into two layers. The superficial layer is stretched out from 

 there to the medial surface of the tuber calcanei and goes over above into the superficial 

 layer of the fascia cruris, frequently with a sharp concave margin, sometimes without sharp 

 limit (continued on p. 361). 



