In humans, limb amputation or brachial plexus avulsion (BPA) often results in phantom pain sensation. Actively observing movements made by a substitute of the injured limb can reduce phantom pain, Proc. R. Soc. London B Biol. Sci. 263, 377-386). The neural basis of phantom limb sensation and its amelioration remains unclear. Here, we studied the effects of visuomotor training on motor cortex (M...

The locomotor problem in bilateral disarticulation at the hip is serious because there is no natural motive power left to help swing either limb forward, and the physiological mechanism used in unilateral disarticulation is no longer available. The only motive power is pelvic and spinal in origin. To overcome this, a new “ swing door “ hinge prosthesis has been developed, which is particularly ...

Hands are important parts of a human body. It is not only the main tool for people to engage in productive labor, but also an communication tool. When hand moves, body produces kind signal named surface electromyography (sEMG), which electrophysiological that accompanies muscle activity. contains lot information about movement consciousness. The bionic limb driven by multi-degree-freedom contro...

This independent-study honors project dealt with congenital skeletal limb deficiencies. This paper discusses and reviews the literature concerning the prosthetic management of the individual with unilateral terminal transverse partial hemimelia of the upper extremity. Specific topics considered are: a general description of the entity, including etiology and incidence; psychological factors aff...

BACKGROUND Spinal-like regulators have recently been shown to support complex behavioral patterns during volitional goal-oriented reaching paradigms. We use an interpretation of the adaptive spinal-like controller as inspiration for the development of a controller for a robotic limb. It will be demonstrated that a simulated robot arm with linear actuators can achieve biological-like limb moveme...

Many people suffer from the loss of a limb. Learning to get by without an arm or hand can be very challenging, and existing prostheses do not yet fulfil the needs of individuals with amputations. One promising solution is to provide greater communication between a prosthesis and its user. Towards this end, we present a simple machine learning interface to supplement the control of a robotic lim...

Over a period of five years, 123 patients who had 124 limb amputations in King Fahd Hospital, Jeddah, Western Saudi Arabia were reviewed to find out the pattern of amputations, aetiological factors and difficulties in management. The male: female ratio was 2.8 : 1. The mean age was 52.5 years (range, 2·100 yrs). The lower limb was involved in 108 cases (87.8%) compared to only 16 upper limb amp...

Amphibians and molting arthropods have the remarkable capacity to regenerate amputated limbs, as described by an extensive literature of experimental cuts, amputations, grafts, and molecular techniques. Despite a rich history of experimental efforts, no comprehensive mechanistic model exists that can account for the pattern regulation observed in these experiments. While bioinformatics algorith...