FUNCTIONS OF FOOT
   
    Support body weight
    Support body weight
   
    Serves as a lever to propel 
    Serves as a lever to propel 
    the body forward in walking 
    the body forward in walking 
    & running
    & running
    FUNCTIONS OF FOOT
        IF THE FOOT                Gastrocnemius & plantaris
        IF THE FOOT 
        POSSESSED A 
        POSSESSED A 
      SINGLE BONE
      SINGLE BONE
   It cannot adapt 
     It cannot adapt 
     itself to uneven 
     itself to uneven 
     surfaces
     surfaces
   Its propulsive action 
     Its propulsive action 
     depends entirely on 
     depends entirely on 
     gastrocnemius & 
     gastrocnemius & 
     plantaris
     plantaris
            BUT
            BUT
   FUNCTIONS OF FOOT
      IF THE FOOT IS 
      IF THE FOOT IS 
        FORMED OF
        FORMED OF
    SMALL BONES 
    SMALL BONES 
         & MANY 
         & MANY 
         JOINTS
         JOINTS
   It can adapt itself 
     It can adapt itself 
     to uneven surfaces
     to uneven surfaces
   Long flexors & 
     Long flexors & 
     small muscles of 
     small muscles of 
     foot assist in 
     foot assist in 
     propulsive action
     propulsive action
    WHY THERE ARE ARCHES?
    A segmented structure can hold up weight 
      A segmented structure can hold up weight 
      only if it is built in the form of arches
      only if it is built in the form of arches
    Weight will be distributed on: 1) the heel 
      Weight will be distributed on: 1) the heel 
      (behind) & 2) heads of metatarsal bones (in 
      (behind) & 2) heads of metatarsal bones (in 
      front): pressure will be minimized on 
      front): pressure will be minimized on 
      nerves & vessels in sole
      nerves & vessels in sole
    Forward propulsive action will be easier
      Forward propulsive action will be easier
   FOOT DIVISION
   Hind-foot
   Mid-foot
   forefoot