KINE 3575 Chapter Notes - Chapter 18: Critical Limb Ischemia, Internal Fixation, Jones Fracture
19 Oct 2016
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Document Summary
Foot consist of 26 bones; 14 phalangeal, 5 metatarsal and 7 tarsal (additionally 2 sesamoid bones beneath the first metatarsal. Toes are deigned to give a wider base for balance and for propelling the body forward. First toe called hallux has 2 phalanges and other toes have 3. Two sesamoid bones under first metatarsophalangeal joint=function is to assist in reducing pressure in weight bearing, increase mechanical advantage of the flexor tendons of the great toe, and act as sliding pulleys for tendons. Metatarsals are the five bones that lie bw and articulate with the tarsals and the phalanges thus forming semi movable tarsometatarsal and metatarsophalangeal joints. Ligament arrangement give elasticity to allow the joints to move. First metatarsal is most weight bearing and therefore the strongest. Medial and lateral sesamoid bone located on plantar aspect of metatarsophalangeal joint of the great toe within flexor hallucis tendon.
