SOLE OF THE FOOT 



293 



and the abductor hallucis along the line of the medial intermuscular 

 septum. It will be found to give a branch of supply to each of these 

 muscles. In the next place, separate the contiguous borders of the flexor 

 digitorum brevis and abductor digiti quinti. The lateral plantar artery 

 and nerve lie, for a short portion of their course, in the interval between 

 these muscles. Approaching the prominent base of the fifth metatarsal 

 bone the artery disappears from view, by turning medially under cover of 

 the flexor tendons. At the same point the lateral plantar nerve divides 



Flexor digitorum brevis 

 Abductor hallucis 

 Quadratus plantse 



Tibialis anterior, 

 Peronseus longus 



Abductor digiti quinti 



Tibialis posterior 



Flexor hallucis brevis 

 .Tibialis posterior 

 Peronseus brevis 



Flex, brevis dig. quinti 



Adductor hallucis 

 (oblique part) 



Plantar interossei 





FIG. 107. Plantar aspect of the Tarsus and Metatarsus with Attachments 

 of Muscles mapped out. 



into its superficial and deep divisions. The deep division of the lateral 

 plantar nerve and the deep part of the lateral plantar artery cannot be 

 dissected at present. The superficial division of the nerve, however, 

 should be traced to its distribution. 



M. Flexor Digitorum Brevis. This muscle arises from the 

 medial tubercle of the calcaneus, from the deep surface of the 

 intermediate part of the plantar aponeurosis, and from the 

 intermuscular septum on either side of it. About the middle 

 of the sole the fleshy belly divides into four slips, which end 



I 19 a 



