5i6 



A MANUAL OF ANATOMY 



calcis, where it occupies the groove below the peroneal spine or 

 ridge. In this part of its course the tendon is surrounded by a 

 fibrous sheath, which is derived from the lower border of the 

 external annular ligament, and it is here invested by a special 

 synovial sheath, which is a prolongation of that beneath the external 

 annular ligament. It then turns round the peroneal notch on the 



External Popliteal Nerve 



Tendon of Biceps 



Long External Lateral 

 Ligament 



Peroneus Longus 

 Peroneus Brevis 



Tendo Achillis 



Extensor Proprius Halluois 

 Extensor Longus Digitoruni 

 Peroneus Tertius 



Upper Division of Ant. Annular Ligament 

 ^ Lower Division of Ant. Annular Lig. 

 ^Extensor Brevis Digitorum 

 Tendon of Peroneus Tertius 



Fig. 248. — Muscles of the Leg (External View). 



outer border of the cuboid, and traverses the peroneal groove on 

 the plantar surface of that bone, which is converted into a fibro- 

 osseous canal by an expansion derived from the long plantar 

 ligament. Finally, after leaving this fibro-osseous canal, in which 

 it is invested by a special synovial sheath, the tendon crosses th 

 sole of the foot to its twofold insertion, taking a direction forwartl 



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