Journal of Rehabilitation Research & Development (JRRD)

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Implanted neuroprosthesis for assisting arm and hand function after stroke: A case study

Jayme S. Knutson, PhD, et al.

Figure 1. Surgical plan. AdP = adductor pollicis, APB = abductor pollicis brevis, DI = dorsal interosseous, ECRB = extensor carpi radia-lis brevis, EDC = extensor digitorum communis, EMG = electro-myogram, EPL = extensor pollicis longus, FDP = flexor digitorum profundus, FDS = flexor digitorum superficialis, FPL = flexor pollicis longus, IST = implantable stimulator-telemeter, MES = myoelectric signal, SS = supraspinatus.

Loss of arm and hand movement is common after stroke, and recovery is often incomplete. By activating the muscles with electrical current, useful arm and hand movements can be produced. An implanted electrical stimulation system (called a neuroprosthesis) may be an effective permanent assistive device to enable stroke patients to move and use their weak arm and hand again for daily tasks. This study presents the first stroke survivor to receive an implanted stimulator with the capability of activating 12 muscles for assisting arm and hand function. The participant experienced gains on several measures of arm and hand movement and function, but the improvement was limited by muscle tone and fatigue.

Volume 49 Number 10, 2012
   Pages 1505 — 1516

View HTML  ¦  View PDF  ¦  Contents Vol. 49, No. 10
This article and any supplemental material should be cited as follows:
Knutson JS, Chae J, Hart RL, Keith MW, Hoyen HA, Harley MY, Hisel TZ, Bryden AM, Kilgore KL, Peckham H. Implanted neuroprosthesis for assisting arm and hand function after stroke: A case study. J Rehabil Res Dev. 2012;49(10):1505–16.

Last Reviewed or Updated  Wednesday, February 13, 2013 1:54 PM

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