96 THE POCKET ANATOMY 



and is continued as posterior peroneal over lower tibio-fibular 

 articulation to outer side of external malleolus, where it ends 

 by anas, with external plantar and tarsal. Covered in upper 

 part by soleus and deep fascia, then by flexor longus hallucis. 

 Beyond the malleolus it is superficial. 



Branches of peroneal : 



Muscular ; to soleus, tibialis posticus, flexor longus hallucis, 

 and peronei. 



Nutrient : to the fibula, passes downwards. 



Anterior peroneal: arises about 2 inches above external 

 malleolus, pierces or passes below interosseous membrane, 

 and under cover of peroneus tertius reaches front of outer 

 malleolus and tarsus, supplying ankle-joint ; anas, external 

 rnalleolar, tarsal of dorsalis pedis, and terminal of peroneal. 



Communicating : to join communicating of posterior tibial. 



Muscular : to soleus, and deep muscles of back of leg. 



Nutrient : to tibia, arises near origin of posterior tibial, 

 largest of kind in body, passes downwards. 



Communicating : arises 2 inches above inner malleolus, 

 courses beneath flexor longus hallucis ; anas, communicating 

 of peroneal. 



Internal calcaneal : arises near termination, pierces internal 

 annular ligament with internal calcaneal nerve, to supply 

 integument, fat of heel, and muscles on inner side of foot. 



INTERNAL PLANTAR. 



The smaller branch of the posterior tibial, directed for- 

 wards along inner border of foot as far as base of ist meta- 

 tarsal bone, thence along inner side of great toe to anastomose 

 with inner digital branch, is covered at first by abductor 

 hallucis, and subsequently becomes more superficial by lying 

 between that muscle and the flexor brevis digitorum ; it is 

 accompanied by internal plantar nerve. 



Branches : 



Digital, to clefts between four outer toes, joining digital 

 branches from plantar arch. 



Cutaneous, to inner side and sole of foot. 



Muscular. 



EXTERNAL PLANTAR. 



From inner part of foot, beneath abductor hallucis, it runs 

 with external plantar nerve, between flexor brevis digitorum 

 and flexor accessorius, to base of fifth metatarsal ; thence it 



