Ankle-footprosthesiswitharticulatedhumanbone.PDFVIP

Department of aVeterans Affairs Journal of Rehabilitation Research and Development Vol. 28 No. 3, 1991 Pages 13-22 Ankle-foot prosthesis with articulated human bone endoskeleton: Force-deflection and fatigue study Dr. S.G. Kabra, MS (Anat), MS (Gen Surg) and Dr. Ramji Narayanan, MS (Gen Surg) Department of Surgery, Santokba Durlabhji Memorial Hospital, Jaipur, Rajasthan 302 015 India Abstract-The durability and function of three ankle-foot ably received by the amputee. Exhumed, copper wire prostheses fabricated using a naturally articulated, fresh articulated bones, when similarly incorporated into a pros- cadaveric human bone endoskeleton set in a fiber reinforced thesis, showed stress fractures after a similar field trial. rubber shell were studied. Radiographic and force-deflection Hence, while exhumed bones could not be recommended analyses before and after cyclic dorsiflexion for 5,000, 100,000, for use, fresh cadaveric bones with their capsules and peri- and 3 million cycles revealed no structural or functional changes. articular ligaments appeared promising as endoskeleton The endoskeleton foot compared favorably with the Jaipur arikle- material in ankle-foot prostheses. These encouraging results foot prosthesis. It is concluded that formalin-fixed fresh foot bones with intact articulations obtained from cadaveric or notwithstanding, the long-term durability of cadavericbone surgically amputated limbs are suitable for use in ankle-foot endoskeleton prostheses was uncertain. This paper reports prostheses because they withstand prolonged use without func- the results of bench-testing of cadaveric bone