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PLATE XXXIII. 



MUSCLES 



A Popliteus. 

 B Soleus. 



C Upper third posterior surface of fibula 

 from which soleus has been removed. 

 D Flexor longus digitorum. 

 D' Tendon of flexor longus digitorum. 

 E Flexor longus hallucis. 

 F Tibialis posticus. 

 f Tendon of tibialis posticua. 

 6 Peroneus longus. 

 H Peroneus brevis. 

 I Internal lateral ligament. 



K Tendon of biceps. 



L Tendon of semimembranosus. 



M Subcutaneous surface of ext. malleolus- 



N Posterior inferior tibio-fibular ligament. 



Posterior fasciculus of external lateral 



ligament. 

 P Tendo Achillis. 

 R Upper surface of os calcis. 

 8 Posterior ligament of ankle-joint. 

 T Gastrocnemius. 

 V External lateral ligament. 

 Y Plantaris. 



VESSELS 



a Popliteal artery. 



b Popliteal vein. 



c Anterior tibial artery. 



d Posterior tibial artery. 



e Peroneal artery. 



/ Posterior division of peroneal artery 

 giving off articular, external calca- 

 neal, and cutaneous branches. 



g Communicating artery. 



h Internal calcaneal branch. 



k Internal inferior articular artery. 



I External inferior articular artery. 



ra Posterior recurrent branch from the 



anterior tibial artery. 

 n Azygos articular. 



NERVES 



the 



1 Internal popliteal. 



2 Branch from internal popliteal to 



popliteus muscle. 



3 Posterior tibial. 



4 Branch to tibialis posticus and flexor 



longus hallucis (this usually comes 



off the posterior tibial a little lower 



down). 



6 Branch to the flexor longus digitorum. 

 6 Branch from the posterior tibial to the 



ankle-joint. 



The plate also shows well the insertion of the semimembranosus tendon, sending a 

 slip to join the internal lateral ligament of the knee and an expansion which covers in. 

 the popliteus. 



N.B. The nerve to the popliteus comes off from the internal popliteal, and running 

 down posteriorly to the muscle turns under its lower border and enters its 

 anterior surface ; the upper twig of the nerve in the small plate went direct to< 

 the superior tibio-fibular articulation. 



7, 8 Internal calcanean branches. 

 9 External popliteal nerve. 



10 Inferior internal articular from 



internal popliteal. 



11 Azygos articular from the internal 



popliteal. 



12 Branch of deep portion of the obturator 



nerve to knee-joint. 



13 Inferior external articular from the- 



external popliteal. 



