| Median nerve deformation in differential finger motions: Ultrasonographic comparison of carpal tunnel syndrome patients and healthy controls. | |
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MedLine Citation:
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PMID: 21953849 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We investigated the median nerve deformation in the carpal tunnel in patients with carpal tunnel syndrome and controls during thumb, index finger, middle finger, and a four finger motion, using ultrasound. Both wrists of 29 asymptomatic volunteers and 29 patients with idiopathic carpal tunnel syndrome were evaluated by ultrasound. Cross-sectional images during motion from full extension to flexion were recorded. Median nerve cross-sectional area, perimeter, aspect ratio of the minimal enclosing rectangle, and circularity in extension and flexion positions were calculated. Additionally, a deformation index was calculated. We also calculated the intra-rater reliability. In both controls and patients, the median nerve cross-sectional area became significantly smaller from extension to flexion in all finger motions (p < 0.05). In flexion and extension, regardless of the specific finger motion, the median nerve deformation, circularity and the change in perimeter were all significantly greater in CTS patients than in controls (p < 0.05). We found excellent intra-rater reliability for all measurements (ICC > 0.84). With this study we have shown that it is possible to assess the deformation of the median nerve in carpal tunnel syndrome with ultrasonography and that there is more deformation of the median nerve in carpal tunnel syndrome patients during active finger motion. These parameters might be useful in the evaluation of kinematics within the carpal tunnel, and in furthering our understanding of the biomechanics of carpal tunnel syndrome in the future. © 2011 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res. |
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Authors:
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Margriet H M van Doesburg; Jacqueline Henderson; Yuichi Yoshii; Aebele B Mink van der Molen; Stephen S Cha; Kai-Nan An; Peter C Amadio |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-9-27 |
Journal Detail:
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Title: Journal of orthopaedic research : official publication of the Orthopaedic Research Society Volume: - ISSN: 1554-527X ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-9-28 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8404726 Medline TA: J Orthop Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Orthopaedic Research Society. |
Affiliation:
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Orthopedic Biomechanics Laboratory, Division of Orthopedic Research, Mayo Clinic, Rochester, Minnesota 55905; Department of Plastic, Reconstructive and Hand Surgery, University Medical Center, Utrecht, the Netherlands. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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