Energy-storing feet

Prosthetic Feet. With the exception of partial foot amputees, the prostheses for all lower extremity amputees require a prosthetic foot. The prescription criteria for these feet take into consideration the amputation level, residual limb length, subject activity level, cosmetic needs, and the weight of the individual. Prosthetic feet range from the SACK (solid ankle cushioned heel) foot, which is relatively simple and inexpensive, to dynamic-response or energy-storing feet that are more complicated and considerably more costly. Note that prosthetic feet are often foot and ankle complexes. As such, prosthetic feet may replace plantarflexion/dorsiflexion, pronation/supination, and inversion/eversion. Prosthetic feet are typically categorized in terms of the function(s) they provide or replace and whether or not they are articulated. 

J. M. Casillas, V. Dulieu, M. Cohen, I. Marcer, and J. P. Didier (1995), Bioenergetic comparison of a new energy-storing foot and SACH foot in traumatic below-knee vascular amputations. Arch. Phys. Med. Rehabil. 76 39-44. 

J. F. Lehmann, R. Price, A. Boswell-Bessette DraUe, K. ( estad, and B. J. deLateur (1993), Comprehensive analysis of energy storing prosthestic feet. Flex foot and Seattle foot versus standard SACH foot. Arch. Phys. Med. Rehabil. 74 1225-1231. 

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