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The prominent back end of foot is known as the 'heel'. It is based on the calcaneus (heel bone) projecting behind the articulation of the lower leg bones. To distribute the compressive stresses imposed on the heel during locomotion (especially during stance phase) the foot's sole has a covering of connective subcutaneous tissues which are up-to 2 cm thick and lying under the heel. These tissues serve as a shock absorber. It also has a pressure chamber mechanism that helps to support the sole .(1)