Biomechanical evaluation of wrist-driven flexor hinge orthosis in persons with spinal cord injury'

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The wrist-driven flexor hinge orthosis (WDFHO) is a device used to restore hand function in persons with tetraplegic spinal cord injury by furnishing three-point prehension. We assessed the effectiveness and biomechanical properties of the WDFHO in 24 persons with cervical 6 or 7 tetraplegia who have severely impaired hand function. This study introduces a mechanical operating model to assess the efficiency of the WDFHO. Experimental results showed that pinch force increased significantly (p < 0.001) after using the WDFHO and was found to positively correlate with the strength of wrist extensor muscles (r = 0.41, p < 0.001). However, when the strength of the wrist extensors acting on the WDFHO was greater, the reciprocal wrist and finger motion that generates three-point prehension was less effective (r = 0.79, p < 0.001). Reliable and valid biomechanical evaluation of the WDFHO could improve our understanding of its biomechanics.
Publisher
JOURNAL REHAB RES &amp; DEV
Issue Date
2013-12
Language
English
Article Type
Article
Keywords

FUNCTIONAL ELECTRICAL-STIMULATION; PARALYZED HAND; FOLLOW-UP; TETRAPLEGIA; TENODESIS; STRENGTH; SPLINT; MOTION; GRIP; DEVIATION

Citation

JOURNAL OF REHABILITATION RESEARCH AND DEVELOPMENT, v.50, no.8, pp.1129 - 1137

ISSN
0748-7711
DOI
10.1682/JRRD.2012.10.0189
URI
http://hdl.handle.net/10203/188960
Appears in Collection
ME-Journal Papers(저널논문)
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