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IEEE Trans Biomed Eng. 2012 May;59(5):1349-53. doi: 10.1109/TBME.2012.2187784. Epub 2012 Feb 13.

Recording of electric signal passing through a pylon in direct skeletal attachment of leg prostheses with neuromuscular control.

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Department of Physical Medicine and Rehabilitation, Tufts University School of Medicine, Boston, MA 02111, USA.


Direct recordings were made of electrical signals emanating from the muscles in a rabbit's residuum. The signals were transmitted via wires attached on one end to the muscles, and on the other to an external recording system. The cable was held in a titanium tube inside a pylon that had been transcutaneously implanted into the residuum's bone. The tube was surrounded by porous titanium cladding to enhance its bond with the bone and with the skin of the residuum. This study was the first known attempt to merge the technology of direct skeletal attachment of limb prostheses with the technology of neuromuscular control of prostheses, providing a safe and reliable passage of the electrical signal from the muscles inside the residuum to the outside recording system.

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