Median nerve behavior at different wrist positions among older males

Ping Yeap Loh; Hiroki Nakashima; Satoshi Muraki

doi:10.7717/peerj.928

Median nerve behavior at different wrist positions among older males

Ping Yeap Loh, Hiroki Nakashima, Satoshi Muraki

Department of Human Life Design and Science

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

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.

Original language	English
Article number	e928
Journal	PeerJ
Volume	2015
Issue number	3
DOIs	https://doi.org/10.7717/peerj.928
Publication status	Published - 2015

All Science Journal Classification (ASJC) codes

Neuroscience(all)
Biochemistry, Genetics and Molecular Biology(all)
Agricultural and Biological Sciences(all)

Access to Document

10.7717/peerj.928

Cite this

@article{e27c03335992495f889c568ca51e7f09,

title = "Median nerve behavior at different wrist positions among older males",

abstract = "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.",

author = "Loh, {Ping Yeap} and Hiroki Nakashima and Satoshi Muraki",

note = "Publisher Copyright: {\textcopyright} 2015 Loh et al.",

year = "2015",

doi = "10.7717/peerj.928",

language = "English",

volume = "2015",

journal = "PeerJ",

issn = "2167-8359",

publisher = "PeerJ",

number = "3",

}

TY - JOUR

T1 - Median nerve behavior at different wrist positions among older males

AU - Loh, Ping Yeap

AU - Nakashima, Hiroki

AU - Muraki, Satoshi

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84961372054&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84961372054&partnerID=8YFLogxK

U2 - 10.7717/peerj.928

DO - 10.7717/peerj.928

M3 - Article

AN - SCOPUS:84961372054

SN - 2167-8359

VL - 2015

JO - PeerJ

JF - PeerJ

IS - 3

M1 - e928

ER -

Median nerve behavior at different wrist positions among older males

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this