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Median nerve behavior at different wrist positions among older males
The effect of wrist flexion-extension on the median nerve appearance, namely the cross-sectional area (MNCSA) and the longitudinal (D1) and vertical (D2) diameters, was investigated among older adults (N = 34). Ultrasound examination was conducted to examine the median nerve at different wrist angle...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
PeerJ Inc.
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4419528/ https://www.ncbi.nlm.nih.gov/pubmed/25945317 http://dx.doi.org/10.7717/peerj.928 |
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author | Loh, Ping Yeap Nakashima, Hiroki Muraki, Satoshi |
author_facet | Loh, Ping Yeap Nakashima, Hiroki Muraki, Satoshi |
author_sort | Loh, Ping Yeap |
collection | PubMed |
description | The effect of wrist flexion-extension on the median nerve appearance, namely the cross-sectional area (MNCSA) and the longitudinal (D1) and vertical (D2) diameters, was investigated among older adults (N = 34). Ultrasound examination was conducted to examine the median nerve at different wrist angles (neutral; and 15°, 30°, and 45° extension and flexion), in both the dominant and nondominant hand. Median nerve behavior were significantly associated with wrist angle changes. The MNCSA at wrist flexion and extension were significantly smaller (P < .001) compared with the neutral position in both the dominant and nondominant hand. The D1 and D2 were significantly reduced at flexion (P < .001) and extension (P < .001), respectively, in both the dominant and nondominant hand. Our results suggest that a larger flexion-extension angle causes higher compression stress on the median nerve, leading to increased deformation of the MNCSA, D1, and D2 among older adults. |
format | Online Article Text |
id | pubmed-4419528 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | PeerJ Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-44195282015-05-05 Median nerve behavior at different wrist positions among older males Loh, Ping Yeap Nakashima, Hiroki Muraki, Satoshi PeerJ Geriatrics The effect of wrist flexion-extension on the median nerve appearance, namely the cross-sectional area (MNCSA) and the longitudinal (D1) and vertical (D2) diameters, was investigated among older adults (N = 34). Ultrasound examination was conducted to examine the median nerve at different wrist angles (neutral; and 15°, 30°, and 45° extension and flexion), in both the dominant and nondominant hand. Median nerve behavior were significantly associated with wrist angle changes. The MNCSA at wrist flexion and extension were significantly smaller (P < .001) compared with the neutral position in both the dominant and nondominant hand. The D1 and D2 were significantly reduced at flexion (P < .001) and extension (P < .001), respectively, in both the dominant and nondominant hand. Our results suggest that a larger flexion-extension angle causes higher compression stress on the median nerve, leading to increased deformation of the MNCSA, D1, and D2 among older adults. PeerJ Inc. 2015-04-30 /pmc/articles/PMC4419528/ /pubmed/25945317 http://dx.doi.org/10.7717/peerj.928 Text en © 2015 Loh et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. |
spellingShingle | Geriatrics Loh, Ping Yeap Nakashima, Hiroki Muraki, Satoshi Median nerve behavior at different wrist positions among older males |
title | Median nerve behavior at different wrist positions among older males |
title_full | Median nerve behavior at different wrist positions among older males |
title_fullStr | Median nerve behavior at different wrist positions among older males |
title_full_unstemmed | Median nerve behavior at different wrist positions among older males |
title_short | Median nerve behavior at different wrist positions among older males |
title_sort | median nerve behavior at different wrist positions among older males |
topic | Geriatrics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4419528/ https://www.ncbi.nlm.nih.gov/pubmed/25945317 http://dx.doi.org/10.7717/peerj.928 |
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