356 



Muscles of tbe Leg. 



401. Muscles of the back of the right foot. 



Fibula 



M. tibialis aiiterioi' 



Tibia 



Ligamemum 

 traiisversTiii) cruris* 



M. extensor digitoniin 

 longiis 



Malleolus lateralis 



Liganieiituiii 

 cruciatuni cruris 



Malleolus 

 luedialis 



M. extensor 

 liallucis loiigus 



M. extensor 



digitoruiii 



brevis 



M. pero- 

 iiacus tertius 



Tuberositas 



ossis nieta- r* 



tarsalis V 



M. extensor 

 dlgitoruni < 

 brevis 



JI. abductor 

 digiti V " 



M. extensor 



liallucis 



brevis 



Strengthen- 

 - ing band 

 (see text I 



M. abductor 

 hallucis 



The fascia dorsalis 

 pedis is stretched out in 

 the form of a membrane, inr 

 the most part thin, over the 

 tendons and nniscles of the 

 back of the foot : above it is 

 connected with the fascia 

 cruris, at the sides with the 

 aponeurosis plantaris. Inter- 

 woven in it, at the junction 

 of the foot with the leg, is 

 situated the powerful li//(i- 

 mentum cruciaium cruris 

 (0. T. lower part of anterior 

 annular lio'ament) (see also 

 Figs. 392, 4 02, 405 and 409). 

 This usually has the shape 

 of a Y. Its lateral, strongest 

 limb consists of two layers, 

 of which the more superficial 

 arises on the lateral surface 

 of the calcaneus (connected 

 with the retinaculum mm. 

 peronaeorum inferius), the 

 deep one arising in the sinus 

 tarsi. Both extend median- 

 ward, the former in front of, 

 the latter behind the tendons 

 of the m. extensor digitorum 

 longus, unite on the medial 

 side of the same and divide, 

 then, into two medial limbs. 

 The inferior medial, more deli- 

 cate, limb runs in front of the 

 tendons of the mm. extensor 

 hallucis longus and tibialis 

 anterior to the os naviculare 

 and OS cuneiforme I. The 

 superior medial, stronger limb 

 goes to the anterior surface 

 of the malleolus medialis (see 

 also fascia cruris p. 347); it 

 consists likewise of two layers, 

 which run in front of and 

 behind the mm. extensor 

 hallucis longus and tibialis 

 anterior: the main mass of 

 fibers usually runs in front 

 of the m. extensor hallucis 

 longus and behind the m. 

 tibialis anterior. Going off 

 from the medial surface of 

 the OS cuneiforme I and os 

 metatarsale I is a curved 

 strengthening band of fibers 

 which passes m front of 

 the nun. extensores hallucis 

 to the basis oss. metatar- 

 salis II. 



