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Sensory Feedback for Lower Extremity Prostheses Incorporating Targeted Muscle Reinnervation (TMR)

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Technical Report,30 Sep 2016,29 Sep 2017

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Seattle Institute for Biomedical and Clinical Research Seattle United States

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We seek to improve stair descent for lower limb amputees by providing sensory feedback of foot placement. An increasing number of amputees are receiving a nerve transfer surgery, Targeted Reinnervation, that can have profound sensory effects. Touches at the site of the surgery can feel like they are originating from the amputated limb. This capability is an unprecedented opportunity to provide sensory feedback that is intuitive and useful, but sensory recovery after the surgery is not well understood. Therefore the two Specific Aims of this project are to 1 Systematically map and characterize the sensory capabilities of lower extremity Targeted Reinnervation TR sites under tactile stimulation, and 2 Measure the effects of vibrotactile cues of foot placement on stair descent of transtibial amputees. This year we have created the first speed-adapting stair descent machine developed new tactile stimulators that we expect to use in later stages of this project and completed baseline studies to calibrate technologies and protocols on participants without amputation.

Subject Categories:

  • Medicine and Medical Research
  • Anatomy and Physiology
  • Human Factors Engineering and Man Machine Systems

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