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HANDBOOK OF ANATOMY 



of the arch is the astragalus. The bones of the foot are really 

 arranged in two longitudinal columns. The inner one consists 

 of the os calcis, scaphoid, three cuneiforms, and first, second, 

 and third metatarsals; the outer one consists of the os calcis, 

 cuboid, and fourth and fifth metatarsals. In this way the 

 weight is evenly distributed to the front of the foot, which is 

 necessary in the upright position, as the line of gravity falls 

 in front of the knee-joint. The arch is kept in shape by the 

 plantar ligaments, plantar fascia, and tendon of tibalis posticus 

 which act as ties. 



The Transverse Arch is most marked at the tarso-rnetatarsal 

 joints. The outer border of the foot is lower than the inner, so 

 that when the two feet are placed side by side the transverse 

 arch is complete. 



MUSCLES ACTING ON THE ANKLE-JOINT. 



