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Restoration of Tetraplegic Hand Function by Use of the Neurocontrol Freehand SystemFrom the Wessex Plastic Surgery Centre, The Department of Medical Physics and Biomedical Engineering, and The Duke of Cornwall Spinal Injuries Centre, Salisbury District Hospital, Salisbury, Wiltshire, UK Correspondence: Mr. John Hobby, The Wessex Plastic Surgery Unit, Salisbury District Hospital, Salisbury, Wiltshire SP2 8BJ, UK. E-mail: p.taylor{at}mpbe-sdh.demon.co.uk Nine tetraplegic patients with C5 or C6 level spinal cord lesions had the Freehand System, an eight channel Functional Electrical Stimulation device, implanted to allow of hand opening and grasp. This paper describes the surgical implementation of the system and the challenges encountered. Seven of the subjects are currently daily users of the device. One subject is unable to use the system due to disruption of bowel function when the system is used. A second subject suffered a lesion of the posterior interosseous nerve, but this was not thought to be related to system use. Additionally, one subject exhibited symptoms of autonomic dysreflexia, which were alleviated by reduction of the strength of the stimulus. Despite such problems, the Freehand system can significantly improve the functional ability of C5 and C6 lesion tetraplegics.
Journal of Hand Surgery (British and European Volume), Vol. 26, No. 5,
459-464 (2001) |
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