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A novel five degree of freedom user command controller in people with spinal cord injury and non-injured for full upper extremity neuroprostheses, wearable powered orthoses and prosthetics

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Abstract

An independent lifestyle requires the ability to place the hand in the complete workspace in concert with hand grasp and release. A novel user command controller monitoring head position for purpose of controlling hand location and orientation is proposed and demonstrated. The controller detected five degrees of freedom which were applied to upper limb movements including forearm and hand placement in three-dimensional space. The controller was evaluated by having subjects complete tracking tasks manipulating a simulated on-screen upper limb representation. Thirteen of the eighteen subjects assessed using the controller had sustained a spinal cord injury at or above the sixth cervical vertebra. Two of the injured subjects with decreased cervical spine mobility were unable to operate the controller. The remaining subjects performed the tracking tasks effectively after minimal training. This simple five-degree of freedom controller has been proposed for the use by those disabled by upper limb amputation, paralysis, weakness or hypertonicity.

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Acknowledgment

This work has been supported by Northern Sydney Central Coast Area Health Service Research Grants Scheme Office for Science and Medical Research NSW Government Biofirst Premiers Grant for Spinal Cord Injury and other Neurological Disorders.

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Authors and Affiliations

  1. Quadriplegic Hand Research Unit, The Spinal Cord Injuries Unit, Royal North Shore Hospital, St Leonards, NSW, 2065, Australia

    Timothy R. D. Scott & Veronica A. Vare

  2. The Faculty of Medicine, The University of Sydney, Sydney, Australia

    Timothy R. D. Scott

Authors
  1. Timothy R. D. Scott
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  2. Veronica A. Vare
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Correspondence to Timothy R. D. Scott.

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Scott, T.R.D., Vare, V.A. A novel five degree of freedom user command controller in people with spinal cord injury and non-injured for full upper extremity neuroprostheses, wearable powered orthoses and prosthetics. Med Biol Eng Comput 51, 317–330 (2013). https://doi.org/10.1007/s11517-012-0996-3

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  • DOI: https://doi.org/10.1007/s11517-012-0996-3

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