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National Institutes of Health
People can lose all or part of an arm or leg for a number of reasons. Common ones include
If you are missing an arm or leg, an artificial limb can sometimes replace it. The device, a prosthesis, can help you to perform daily activities such as walking, eating, or dressing. Some artificial limbs let you function nearly as well as before.
Paralyzed Individuals Use Thought-Controlled Robotic Arm to Reach and Grasp
(05/16/2012, National Institute of Neurological Disorders and Stroke, National Institute of Child Health and Human Development, National Institute on Deafness and Other Communication Disorders)
References and abstracts from MEDLINE/PubMed (National Library of Medicine)