46 



PLATE XXII L 



MUSCLES 



A Tibialis anticus. 



B Extensor longus digitorum. 



C Extensor proprius hallucis. 



D Peroneus tertius. 



E Peroneus longus. 



E' Tendon of peroneus longus. 



F Peroneus brevi?. 



F' Tendon of peroneus brevis. 



G Vertical portion of the annular liga- 

 ment. 



H Horizontal portion of the annular 

 ligament. 



I External malleolus. 



K Tubercle of the tibia. 



L Internal subcutaneous surface of the 



tibia. 

 M Placed over the intermuscular septum 



between the extensor muscles and 



the peronei, which usually shows as 



a whitish line. 

 N Placed on the insertion of the sarto- 



rius into the tibia. 

 Interosseous membrane. 

 P The external surface of the tibia. 



VESSELS 



o, Anterior tibial artery. 



b Anterior recurrent branch of the 



anterior tibial artery. 

 c Muscular branches of the anterior 



tibial. 

 d Anterior division of the peroneal artery. 



e External malleolar branch of the 



anterior tibial. 



/ Internal or long saphenous vein. 

 g A communicating vein between the long 



saphenous and the short saphenous. 



NERVES 



1 External popliteal. 



2 Anterior tibial. 



8 Musculo-cutaueous. 



4 Branches from anterior tibial to the 



tibialis anticus, one of which turns 

 up to accompany the recurrent 

 articular artery. 



5 Branches from anterior tibial piercing 



the peroneus longus to reach the 

 upper part of the extensor longus 

 digitorum. 



6 Branches from the musculo-cutaneous 



to supply peroneus longus. 



7 Branches from the musculo-cutaneous 



to supply peroneus brevis. 



8 Cutaneous branch of musculo-cuta- 



neous. 1 



9 Branches of anterior tibial to the 



extensor longus digitorum. 



10 Branch of the anterior tibial to pero- 



neus tertius. 



11 Branches of the anterior tibial to 



extensor proprius hallucis. 



12 Branches of anterior tibial to tibialis 



anticus. 



13 Internal saphenous. 



This nerve usually pierces the fascia in two branches instead of one as in this dissection. 



