Cargando…

The importance of abductor pollicis longus in wrist motions: A physiological wrist simulator study

The abductor pollicis longus (APL) is one of the primary radial deviators of the wrist, owing to its insertion at the base of the first metacarpal and its large moment arm about the radioulnar deviation axis. Although it plays a vital role in surgical reconstructions of the wrist and hand, it is oft...

Descripción completa

Detalles Bibliográficos
Autores principales: Shah, Darshan S., Middleton, Claire, Gurdezi, Sabahat, Horwitz, Maxim D., Kedgley, Angela E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Science 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085116/
https://www.ncbi.nlm.nih.gov/pubmed/30054091
http://dx.doi.org/10.1016/j.jbiomech.2018.07.011
_version_ 1783346275154919424
author Shah, Darshan S.
Middleton, Claire
Gurdezi, Sabahat
Horwitz, Maxim D.
Kedgley, Angela E.
author_facet Shah, Darshan S.
Middleton, Claire
Gurdezi, Sabahat
Horwitz, Maxim D.
Kedgley, Angela E.
author_sort Shah, Darshan S.
collection PubMed
description The abductor pollicis longus (APL) is one of the primary radial deviators of the wrist, owing to its insertion at the base of the first metacarpal and its large moment arm about the radioulnar deviation axis. Although it plays a vital role in surgical reconstructions of the wrist and hand, it is often neglected while simulating wrist motions in vitro. The aim of this study was to observe the effects of the absence of APL on the distribution of muscle forces during wrist motions. A validated physiological wrist simulator was used to replicate cyclic planar and complex wrist motions in cadaveric specimens by applying tensile loads to six wrist muscles – flexor carpi radialis (FCR), flexor carpi ulnaris, extensor carpi radialis longus (ECRL), extensor carpi radialis brevis, extensor carpi ulnaris (ECU) and APL. Resultant muscle forces for active wrist motions with and without actuating the APL were compared. The absence of APL resulted in higher forces in FCR and ECRL – the synergists of APL – and lower forces in ECU – the antagonist of APL. The altered distribution of wrist muscle forces observed in the absence of active APL control could significantly alter the efficacy of in vitro experiments conducted on wrist simulators, in particular when investigating those surgical reconstructions or rehabilitation of the wrist heavily reliant on the APL, such as treatments for basal thumb osteoarthritis.
format Online
Article
Text
id pubmed-6085116
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher Elsevier Science
record_format MEDLINE/PubMed
spelling pubmed-60851162018-08-22 The importance of abductor pollicis longus in wrist motions: A physiological wrist simulator study Shah, Darshan S. Middleton, Claire Gurdezi, Sabahat Horwitz, Maxim D. Kedgley, Angela E. J Biomech Article The abductor pollicis longus (APL) is one of the primary radial deviators of the wrist, owing to its insertion at the base of the first metacarpal and its large moment arm about the radioulnar deviation axis. Although it plays a vital role in surgical reconstructions of the wrist and hand, it is often neglected while simulating wrist motions in vitro. The aim of this study was to observe the effects of the absence of APL on the distribution of muscle forces during wrist motions. A validated physiological wrist simulator was used to replicate cyclic planar and complex wrist motions in cadaveric specimens by applying tensile loads to six wrist muscles – flexor carpi radialis (FCR), flexor carpi ulnaris, extensor carpi radialis longus (ECRL), extensor carpi radialis brevis, extensor carpi ulnaris (ECU) and APL. Resultant muscle forces for active wrist motions with and without actuating the APL were compared. The absence of APL resulted in higher forces in FCR and ECRL – the synergists of APL – and lower forces in ECU – the antagonist of APL. The altered distribution of wrist muscle forces observed in the absence of active APL control could significantly alter the efficacy of in vitro experiments conducted on wrist simulators, in particular when investigating those surgical reconstructions or rehabilitation of the wrist heavily reliant on the APL, such as treatments for basal thumb osteoarthritis. Elsevier Science 2018-08-22 /pmc/articles/PMC6085116/ /pubmed/30054091 http://dx.doi.org/10.1016/j.jbiomech.2018.07.011 Text en © 2018 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Shah, Darshan S.
Middleton, Claire
Gurdezi, Sabahat
Horwitz, Maxim D.
Kedgley, Angela E.
The importance of abductor pollicis longus in wrist motions: A physiological wrist simulator study
title The importance of abductor pollicis longus in wrist motions: A physiological wrist simulator study
title_full The importance of abductor pollicis longus in wrist motions: A physiological wrist simulator study
title_fullStr The importance of abductor pollicis longus in wrist motions: A physiological wrist simulator study
title_full_unstemmed The importance of abductor pollicis longus in wrist motions: A physiological wrist simulator study
title_short The importance of abductor pollicis longus in wrist motions: A physiological wrist simulator study
title_sort importance of abductor pollicis longus in wrist motions: a physiological wrist simulator study
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085116/
https://www.ncbi.nlm.nih.gov/pubmed/30054091
http://dx.doi.org/10.1016/j.jbiomech.2018.07.011
work_keys_str_mv AT shahdarshans theimportanceofabductorpollicislongusinwristmotionsaphysiologicalwristsimulatorstudy
AT middletonclaire theimportanceofabductorpollicislongusinwristmotionsaphysiologicalwristsimulatorstudy
AT gurdezisabahat theimportanceofabductorpollicislongusinwristmotionsaphysiologicalwristsimulatorstudy
AT horwitzmaximd theimportanceofabductorpollicislongusinwristmotionsaphysiologicalwristsimulatorstudy
AT kedgleyangelae theimportanceofabductorpollicislongusinwristmotionsaphysiologicalwristsimulatorstudy
AT shahdarshans importanceofabductorpollicislongusinwristmotionsaphysiologicalwristsimulatorstudy
AT middletonclaire importanceofabductorpollicislongusinwristmotionsaphysiologicalwristsimulatorstudy
AT gurdezisabahat importanceofabductorpollicislongusinwristmotionsaphysiologicalwristsimulatorstudy
AT horwitzmaximd importanceofabductorpollicislongusinwristmotionsaphysiologicalwristsimulatorstudy
AT kedgleyangelae importanceofabductorpollicislongusinwristmotionsaphysiologicalwristsimulatorstudy