272 



INFERIOR EXTREMITY 



side. Passing posterior to the transverse and cruciate liga- 

 ments, it ends by dividing into a medial and a lateral branch. 



In its course through the leg the deep peroneal nerve 

 gives muscular branches to the extensor digitorum longus, the 

 tibialis anterior, the extensor hallucis longus, and the peroneus 

 tertius ; likewise a fine articular twig to the ankle-joint. 



The medial terminal branch of the deep peroneal nerve is 



Extensor hallucis longus 

 Anterior tibial vessels and 

 deep peroneal nerve 

 Extensor digitorum 

 longu 

 Peronaeus tertius 



Fibula 



Interosseous 

 calcaneo- 

 taloid lig. 



Calcaneus 



Peronaeus brevis 



Superior peroneal 

 retinaculum 



Peronaeus longus 



Lig. transversum 

 Tibialis anterior 



Tibia 

 Talus 



Tibialis posterior 

 Deltoid ligament 



Flexor digitorum 

 longus 



Medial plantar artery 

 Medial plantar nerve 

 Flexor hallucis longus 

 Abductor hallucis 



Lateral plantar nerve 

 Lateral plantar artery 

 Flexor digitorum brevis 



uadratus plantse 



FIG. ioo. Coronal section through the Left Ankle-joint, Talus, 

 and Calcaneus (Paterson). 



continued forwards upon the dorsum of the foot along the 

 lateral side of the dorsalis pedis artery. Reaching the first 

 interosseous space it pierces the deep fascia, and divides 

 to supply the contiguous margins of the great toe and the 

 second toe (p. 269). Before it reaches the surface, it furnishes 

 articular twigs \.Q the tarso-metatarsal and metatarso-phalangeal 

 joints of the great toe, and frequently, also, a fine muscular twig 

 to the dorsal surface of the first dorsal interosseous muscle. 



The lateral terminal branch of the deep peroneal nerve 

 turns abruptly laterally, under cover of the extensor digitorum 



