260 INFERIOR EXTREMITY 



3. N. saphenus. 



4. N. peronseus superficialis. 



5. N. peronseus profundus. 



The lateral cutaneous nerve of the calf is a branch of the 

 common peroneal nerve which frequently arises in common with 

 the peroneal anastomotic branch. It turns anteriorly, and is 

 distributed upon the lateral and anterior aspect of the proximal 

 part of the leg. The sural nerve (O.T. short saphenous) can 

 be readily found. It reaches the lateral margin of the foot by 

 passing posterior to the lateral malleolus, in company with the 

 small saphenous vein, and becomes the lateral dorsal cutaneous 

 nerve. Trace it anteriorly, and it will be found to end upon the 

 lateral side of the little toe. On the dorsum of the foot 

 a connecting twig passes between this nerve and the lateral 

 division of the superficial peroneal nerve (nervus cutaneus dor- 

 salis intermedius). The saphenous nerve (O.T. internal saphenous 

 nerve] should be looked for anterior to the medial malleolus. 

 It descends in company with the great saphenous vein. It 

 may, with care, be followed half-way along the medial margin 

 of the foot, but there it ends. Above the ankle-joint several 

 minute twigs from this nerve may be found passing forwards 

 to reach the front of the leg. 



The superficial peroneal nerve (O.T. musculo-cutaneous nerve) 

 appears in the distal third of the leg. It pierces the deep 

 fascia a short way lateral to the middle line of the limb. 

 Almost immediately it splits into a medial and a lateral 

 part. The medial division (the nervus cutaneus dorsalis 

 medialis) extends anteriorly, on the dorsum of the foot, 

 and sends one branch to the medial side of the great 

 toe, and a second to supply the adjacent sides of the second 

 and third toes. It likewise gives a number of twigs to 

 the skin upon the medial margin of the foot, and effects 

 junctions with the deep peroneal nerve and the saphenous 

 nerve. The lateral division (the intermediate dorsal cutaneous 

 nerve), is smaller than the medial part. It gives several twigs 

 to the skin on the dorsum of the foot, communicates with the 

 lateral dorsal cutaneous nerve, and then divides into two 

 branches, which supply the contiguous margins of the third, 

 fourth, and fifth toes. Therefore, with the exception of the 

 adjacent sides of the great toe and the second toe, which are 

 supplied by the deep peroneal nerve, and the lateral side of 

 the little toe, which is supplied by the lateral dorsal continua- 



