An Armrest is Effective for Reducing Hand Tremble in Neurosurgeons

Experienced neurosurgeons reduce hand tremble by placing their hand beside the operative field when performing microneurosurgery conventionally. Another solution to reduce hand tremble is an armrest. However, the reduction of hand tremble by using an armrest or finger-placing technique has not been...

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Main Authors:	HARA, Yosuke, GOTO, Tetsuya, OKAMOTO, Jun, OKUDA, Hideki, ISEKI, Hiroshi, HONGO, Kazuhiro
Format:	Online
Language:	English
Published:	The Japan Neurosurgical Society 2015
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4628178/

id	pubmed-4628178
recordtype	oai_dc
spelling	pubmed-46281782015-11-05 An Armrest is Effective for Reducing Hand Tremble in Neurosurgeons HARA, Yosuke GOTO, Tetsuya OKAMOTO, Jun OKUDA, Hideki ISEKI, Hiroshi HONGO, Kazuhiro Original Article Experienced neurosurgeons reduce hand tremble by placing their hand beside the operative field when performing microneurosurgery conventionally. Another solution to reduce hand tremble is an armrest. However, the reduction of hand tremble by using an armrest or finger-placing technique has not been rigorously measured in microneurosurgery. This study was performed to provide a quantitative assessment of the efficacy of an armrest to reduce hand tremble in comparison with the finger-placing technique. Hand tremble was evaluated in 11 board-certified neurosurgeons in a simulated microneurosurgery. The loci of surgical forceps handled by neurosurgeons were measured by a three-dimensional optical coordinate measuring machine. A static task was performed under four conditions: with/without the finger-placing technique and/or an armrest. The radius of an imaginative sphere including 95% of each locus was calculated and reviewed according to the four conditions. Hand tremble was significantly larger when the finger-placing technique was not implemented compared to when the technique was used (P < 0.05). The armrest also reduced hand tremble (P < 0.05) similar to the finger-placing technique. Non-inferiority was retained between the finger-placing technique and the armrest. Concomitant use of the armrest and the finger-placing technique did not interfere with the efficacy of the technique to reduce neurosurgeon’s hand tremble. The finger-placing technique was confirmed to reduce hand tremble. Resting the neurosurgeon’s forearm on an armrest also reduced the hand tremble. An armrest is a device that reduces hand tremble in neurosurgeons like the finger-placing technique. The Japan Neurosurgical Society 2015-04 2015-03-23 /pmc/articles/PMC4628178/ /pubmed/25797774 http://dx.doi.org/10.2176/nmc.oa.2014-0384 Text en © 2015 The Japan Neurosurgical Society This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	HARA, Yosuke GOTO, Tetsuya OKAMOTO, Jun OKUDA, Hideki ISEKI, Hiroshi HONGO, Kazuhiro
spellingShingle	HARA, Yosuke GOTO, Tetsuya OKAMOTO, Jun OKUDA, Hideki ISEKI, Hiroshi HONGO, Kazuhiro An Armrest is Effective for Reducing Hand Tremble in Neurosurgeons
author_facet	HARA, Yosuke GOTO, Tetsuya OKAMOTO, Jun OKUDA, Hideki ISEKI, Hiroshi HONGO, Kazuhiro
author_sort	HARA, Yosuke
title	An Armrest is Effective for Reducing Hand Tremble in Neurosurgeons
title_short	An Armrest is Effective for Reducing Hand Tremble in Neurosurgeons
title_full	An Armrest is Effective for Reducing Hand Tremble in Neurosurgeons
title_fullStr	An Armrest is Effective for Reducing Hand Tremble in Neurosurgeons
title_full_unstemmed	An Armrest is Effective for Reducing Hand Tremble in Neurosurgeons
title_sort	armrest is effective for reducing hand tremble in neurosurgeons
description	Experienced neurosurgeons reduce hand tremble by placing their hand beside the operative field when performing microneurosurgery conventionally. Another solution to reduce hand tremble is an armrest. However, the reduction of hand tremble by using an armrest or finger-placing technique has not been rigorously measured in microneurosurgery. This study was performed to provide a quantitative assessment of the efficacy of an armrest to reduce hand tremble in comparison with the finger-placing technique. Hand tremble was evaluated in 11 board-certified neurosurgeons in a simulated microneurosurgery. The loci of surgical forceps handled by neurosurgeons were measured by a three-dimensional optical coordinate measuring machine. A static task was performed under four conditions: with/without the finger-placing technique and/or an armrest. The radius of an imaginative sphere including 95% of each locus was calculated and reviewed according to the four conditions. Hand tremble was significantly larger when the finger-placing technique was not implemented compared to when the technique was used (P < 0.05). The armrest also reduced hand tremble (P < 0.05) similar to the finger-placing technique. Non-inferiority was retained between the finger-placing technique and the armrest. Concomitant use of the armrest and the finger-placing technique did not interfere with the efficacy of the technique to reduce neurosurgeon’s hand tremble. The finger-placing technique was confirmed to reduce hand tremble. Resting the neurosurgeon’s forearm on an armrest also reduced the hand tremble. An armrest is a device that reduces hand tremble in neurosurgeons like the finger-placing technique.
publisher	The Japan Neurosurgical Society
publishDate	2015
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4628178/
_version_	1613495649084375040

An Armrest is Effective for Reducing Hand Tremble in Neurosurgeons

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