Van Nes rotationplasty is a reconstructive and salvage procedure of the lower limb. The technique replaces the amputated thigh and knee with an autologus biological 'prosthesis', the patient's own ipsilateral ankle, which is rotated 180 degrees and fixed at the level of the contralateral knee. This procedure was first adapted by Borggreve of Germany in 1930 to treat a knee joint destroyed by tu...

There is currently a distinction drawn between a prosthesis considered to be provided for purely cosmetic reasons and a functional prosthesis provided to enable the amputee to achieve basic hand function. Using video analysis the study reported in this paper demonstrates that for non-manipulative actions cosmetic prostheses are actively used in the performance of everyday tasks as frequently as...

An “ideal” upper limb prosthesis should be perceived as part of the natural body by the amputee and should replicate sensory-motor capabilities of the amputated limb. However, such an ideal “cybernetic” prosthesis is still far from reality: current prosthetic hands are simple grippers with one or two degrees of freedom, which barely restore the capability of the thumb-index pinch. This paper de...

Introduction Lower limb amputation impairs postural performance that could be characterized by biomechanical parameters. This study is to investigate of persons with transfemoral and transtibial compared controls without amputation. Methods Eight transtibial, nine twelve able-bodied males participated in this study. joints, pelvis trunk angles were obtained from an optoelectronic motion analysi...

A prosthetic foot is a key element of a prosthetic leg, literally forming the basis for a stable and efficient amputee gait. We determined the roll-over characteristics of a broad range of prosthetic feet and examined the effect of a variety of shoes on these characteristics. The body weight of a person acting on a prosthetic foot during roll-over was emulated by means of an inverted pendulum-l...

An “ideal” upper limb prosthesis should be perceived as part of the natural body by the amputee and should replicate sensory-motor capabilities of the amputated limb. However, such an ideal “cybernetic” prosthesis is still far from reality: current prosthetic hands are simple grippers with one or two degrees of freedom, which barely restore the capability of the thumb-index pinch. This paper de...

Although partial-hand amputees largely retain the ability to use their wrist, it is difficult to preserve wrist motion while using a myoelectric partial-hand prosthesis without severely impacting control performance. Electromyogram (EMG) pattern recognition is a well-studied control method; however, EMG from wrist motion can obscure myoelectric finger control signals. Thus, to accommodate wrist...