1196 



SURGICAL AND TOPOGRAPHICAL AyATOMY 



longus digitorum, companion vein, posterior tibial artery, companion vein, posterior 

 tibial nerve, flexor longus halliicis. 



(D) Tendons at outer ankle. — The tendons of the two peronei, which arise 

 from the fibula l)etween the extensor longus digitorum and flexor longus hallucis, 

 pass behind the external malleolus, the brevis being nearer to the lione (fig. 75H). 

 Tliey then pass forwards over the outer surface of the calcaneum, separated by the 



Fig. 



roo. — Tr.^xsverse Section through the Lower Third of the Left Leg, 



IMMEDIATELY ABOVE THE AXKI.E.TdlXT. (BraUUe.) 



Extensor longus digitorum — 



Peroneus longus 



Peroneus brevis 



Flexor longus hallucis 



EXTERNAL CUTANEOUS NEE IE - 



Tibialis antieus 



Extensor proprius hallueia 



Tibialis posticus 

 Flexor longus digitorum 



peroneal tubercle when present, and diverge. The brevis — the upper one — passes 

 to the projection at the base of the fifth metatarsal; the longus, lying below the 

 brevis on the calcaneum, winds round the outer border of the foot, grooving the 

 outer border and under surface of the cuboid. Finally, crossing the sole obliquely 

 forwards and inwards, it is attached to the adjacent parts of the internal cuneiform 

 and the back part and under surface of the first metatarsal. While in connection 



Fig. 761. — Kelatioxs of Parts behind the Ixxer Malleoi.is. (Heath.) 



^Tendo Achillis 



Tibialis posti 



Tibialis posticus 

 Tibialis antieus - 



-' riexor longus digitorum 



pisffrior tibia! arl'-rii 



1" INTERIOR TIBIAL NERVE 



Flexor longus digitorum 



with the under surface of the cuboid, this tendon is covered in by a sheath from 

 the long plantar ligament, and often contains a sesamoid bone. 



Annular ligaments and synovial membranes of tendons. — These strap-like 

 bands of deep fascia, which serve to keep the above tendons in position, are three 

 in number, viz. : — 



(A) External. — This extends from the tip of the external malleolus to the 



