ARCHES OF FOOT 



69 



be done by outside force when the ankle is flexed, or voluntarily 

 when the foot is on the ground. 



The Arches of the Foot. The foot having to support the 

 whole weight of the body, that weight is distributed among 

 its component parts by the arrangement of two arches at 

 right angles to one another longitudinal and transverse. 



External Popliteal Nerve 



Tendon of Biceps _ 



Long External Lateral 

 Ligament 



Peroneus Longus 

 Peroneus Brevis 



TendoAcbillis.... 



Extensor Proprius Hallucis 



Extensor Longus Digitorurn 



Peroneus Tertius 



- Upper Division of Ant. Annular Ligament 

 f Lower Division of Ant. Annular Lig. 

 , Extensor Brevis Digitorum 

 Tendon of Peroneus> Tertius 



FIG. 23. MUSCLES OF LEG. 



The Longitudinal Arch consists of a solid stable pier pos- 

 teriorly the os calcis ; and an elastic resilient pier anteriorly, 

 which is much broadened out and consists of several parts, so 

 that stability is not sacrificed to resilience. The summit, or roof, 



