1460 



CLINICAL AND TOPOGRAPHICAL ANATOMY 



Effusion or tuberculous thickening shows itself first in front, between the medial malleolug 

 and tibiaUs anterior and between the peroneus tertius and lateral malleolus and then behind 

 where it fills up the hollow between the tendo Achillis and the two malleoli. Owing to the thin- 

 ness of the transverse crural (anterior) ligament, the extensor sheaths are easily affected in 

 neglected tuberculous disease. Owing to the way in which the joint is locked in, it is not easy 

 to open and drain an infected ankle-joint satisfactorily. Removal of a portion' of the lateral 



Fig. 1175. — Branches of the Common Peroneal Nerve. 



it 



Common peroneal nerve 

 Recurrent articular 



Superficial peroneal 

 Branch to peroneus longus 



Branch to extensor, 

 digitorum longus 



Branch to peroneus brevis 



Superficial peroneal 



Intermediate dorsal cutaneous' 



Lateral dorsal cutaneous' 



Dorsal digital 

 nerves 



Deep peroneal nerve 



Anterior tibial artery 



Tibialis anterior 



■Deep peroneal nerve 

 Medial dorsal cutaneous 



Deep peroneal (lateral division) 



Distribution to extensor 

 digitorum brevis 



Deep peroneal (medial division) 



Dorsal digital 

 nerves 



malleolus subperiosteally leaving the tip and calcaneo-fibular, will admit of the insertion of a 

 tul>o and good dramage if the foot is so slung as to keep its lateral aspect dependent. 



Tendons.— (A) In front of ankle.— Latero-medially are— (1) The tibialis 

 anterior, thn largest and most medial. This tendon appears in the lower third of 

 the leg, lying just under the deep fascia, close to the tibia; then, crossing over the 



