202 HANDBOOK OF ANATOMY 



Articular. Several to knee-joint, and one to the upper tibio- 

 fibular joint, and to tar sal and metatarsal joints through the 

 short saphenous nerve. 



Cutaneous. The tibial communicating, pierces the deep fascia 

 in the middle third of the leg, where it is joined by the peroneal 

 communicating, to form the short saphenous nerve which supplies 

 the skin on the back of the leg, and, passing behind the external 

 malleolus, supplies the ankle and heel and outer side of the foot 

 and little toe. 



In the back of the leg: 



Muscular to soleus, tibialis posticus, flexor longus hallucis and 

 flexor longus digitorum. 



Cutaneous to the skin of the heel and the posterior part of 

 the sole of the foot by a branch called the internal calcanean. 



Internal Plantar Nerve. A terminal branch of the posterior 

 tibial nerve arises beneath the internal annular ligament, and 

 passes forwards between abductor hallucis and flexor brevis 

 digitorum with the internal plantar artery. 



Branches. Muscular to abductor hallucis, flexor brevis digit- 

 orum, flexor brevis hallucis, and first lumbrical. 



Articular to inner tarsal and metatarsal joints. 



Cutaneous to the inner half of the sole of the foot and the 

 three and a half toes on the inner side. 



The External Plantar Nerve, one of the two terminal 

 branches of the posterior tibial nerve, arises beneath the internal 

 annular ligament, and passes outwards with the external plantar 

 artery between flexor brevis digitorum and accessorius. 



Branches. Muscular to all the muscles in the sole of the foot 

 except those supplied by the internal plantar nerve ; the inter- 

 ossei, and three lumbricals on the outer side. 



Articular to the tarsal and metatarsal joints. 



Cutaneous to the skin of the outer half of the sole of the foot 

 and the one and a half toes on the lateral side. 



The Pudendal Plexus is formed by branches from the anterior 

 division of the first three sacral nerves, of the fourth and fifth 

 sacral nerves, and the coccygeal nerves. It is formed on the 

 back wall of the pelvis, and is distributed to the perineum 

 {mainly by the pudic nerve) except for a few visceral branches. 



