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You are here: Home / HPRC Blog / Regaining a sense of touch

Regaining a sense of touch

published: 08-13-2013
Filed under: Prosthetic limbs
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Prosthetic limbs have come a long way in a short amount of time, mostly because of the number of service members coming back from deployments with traumatic injuries and with the demand for better technology. Advancements in prosthetic arms now include devices that can move and bend individual fingers and joints. However, a sense of touch is one remaining obstacle—but one that researchers are close to conquering.

Many patients with arm prosthetics describe the difficulty with grabbing objects because there is no feedback to the brain. For example, breaking dishes, bruising fruit by grabbing it too hard, and dropping slippery cans are all too likely without any sense of feeling in the hand.

Researchers are now developing a prosthetic limb—called the Modular Prosthetic Limb—that will close the loop between the brain and the prosthetic hand by adding various sensors to contact points such as the fingertips and joints. This will allow sensory feedback to the brain that gives the user enough “feeling” to distinguish between a wool sweater and a cold beverage, for example.

The Department of Defense is working with various universities such as Johns Hopkins and the University of Pittsburgh to develop this unique device and make it available to wounded warriors.


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