Axial loading induces rotation of the proximal carpal row bones around unique screw-displacement axes

Masayuki Kobayashi; Marc Garcia-Elias; Ladislav Nagy; Marco J.P.F. Ritt; Kai Nan An; William P. Cooney; Ronald L. Linscheid

doi:10.1016/S0021-9290(97)00080-8

Axial loading induces rotation of the proximal carpal row bones around unique screw-displacement axes

Masayuki Kobayashi, Marc Garcia-Elias, Ladislav Nagy, Marco J.P.F. Ritt, Kai Nan An, William P. Cooney, Ronald L. Linscheid

Orthopedic Surgery

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

53 Scopus citations

Abstract

The changes in carpal bone alignment secondary to the aplication of an axial compressive load through the major wrist motor tendons while the wrist is kept in neutral position (isometric loading) have been investigated on 13 fresh cadaver specimens using a biplanar radiographic method of kinematic analysis. The scaphoid, lunate and triquetrum rotate an average of 5.1, 4.2 and 3.8°, respectively, around different 'screw displacement axes', all implying flexion, radial deviation and supination. Based on these findings, a new interpretation of the mechanism by which the wrist remains stable under physiologic loads is provided.

Original language	English (US)
Pages (from-to)	1165-1167
Number of pages	3
Journal	Journal of Biomechanics
Volume	30
Issue number	11-12
DOIs	https://doi.org/10.1016/S0021-9290(97)00080-8
State	Published - Nov 1997

Keywords

Carpal bones
Carpal ligaments
Stability
Wrist
Wrist kinetics

ASJC Scopus subject areas

Biophysics
Orthopedics and Sports Medicine
Biomedical Engineering
Rehabilitation

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10.1016/S0021-9290(97)00080-8

Cite this

@article{a3a86a4faf084be6b188679358f8a33b,

title = "Axial loading induces rotation of the proximal carpal row bones around unique screw-displacement axes",

abstract = "The changes in carpal bone alignment secondary to the aplication of an axial compressive load through the major wrist motor tendons while the wrist is kept in neutral position (isometric loading) have been investigated on 13 fresh cadaver specimens using a biplanar radiographic method of kinematic analysis. The scaphoid, lunate and triquetrum rotate an average of 5.1, 4.2 and 3.8°, respectively, around different 'screw displacement axes', all implying flexion, radial deviation and supination. Based on these findings, a new interpretation of the mechanism by which the wrist remains stable under physiologic loads is provided.",

keywords = "Carpal bones, Carpal ligaments, Stability, Wrist, Wrist kinetics",

author = "Masayuki Kobayashi and Marc Garcia-Elias and Ladislav Nagy and Ritt, {Marco J.P.F.} and An, {Kai Nan} and Cooney, {William P.} and Linscheid, {Ronald L.}",

note = "Funding Information: Acknowledgement-This work is dedicated to the memory of Dr Masayuki Kobayashi, the first author of this paper, who passed away in October 1996. We all learned a lot from his kindness and enthusiasm. Without his hard-work and intelligence, this study would have not been possible. This study was funded by Grant AR 40242, awarded by the National Institutes of Health.",

year = "1997",

month = nov,

doi = "10.1016/S0021-9290(97)00080-8",

language = "English (US)",

volume = "30",

pages = "1165--1167",

journal = "Journal of Biomechanics",

issn = "0021-9290",

publisher = "Elsevier Limited",

number = "11-12",

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TY - JOUR

T1 - Axial loading induces rotation of the proximal carpal row bones around unique screw-displacement axes

AU - Kobayashi, Masayuki

AU - Garcia-Elias, Marc

AU - Nagy, Ladislav

AU - Ritt, Marco J.P.F.

AU - An, Kai Nan

AU - Cooney, William P.

AU - Linscheid, Ronald L.

N1 - Funding Information: Acknowledgement-This work is dedicated to the memory of Dr Masayuki Kobayashi, the first author of this paper, who passed away in October 1996. We all learned a lot from his kindness and enthusiasm. Without his hard-work and intelligence, this study would have not been possible. This study was funded by Grant AR 40242, awarded by the National Institutes of Health.

PY - 1997/11

Y1 - 1997/11

N2 - The changes in carpal bone alignment secondary to the aplication of an axial compressive load through the major wrist motor tendons while the wrist is kept in neutral position (isometric loading) have been investigated on 13 fresh cadaver specimens using a biplanar radiographic method of kinematic analysis. The scaphoid, lunate and triquetrum rotate an average of 5.1, 4.2 and 3.8°, respectively, around different 'screw displacement axes', all implying flexion, radial deviation and supination. Based on these findings, a new interpretation of the mechanism by which the wrist remains stable under physiologic loads is provided.

AB - The changes in carpal bone alignment secondary to the aplication of an axial compressive load through the major wrist motor tendons while the wrist is kept in neutral position (isometric loading) have been investigated on 13 fresh cadaver specimens using a biplanar radiographic method of kinematic analysis. The scaphoid, lunate and triquetrum rotate an average of 5.1, 4.2 and 3.8°, respectively, around different 'screw displacement axes', all implying flexion, radial deviation and supination. Based on these findings, a new interpretation of the mechanism by which the wrist remains stable under physiologic loads is provided.

KW - Carpal bones

KW - Carpal ligaments

KW - Stability

KW - Wrist

KW - Wrist kinetics

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AN - SCOPUS:0031278697

SN - 0021-9290

VL - 30

SP - 1165

EP - 1167

JO - Journal of Biomechanics

JF - Journal of Biomechanics

IS - 11-12

ER -

Axial loading induces rotation of the proximal carpal row bones around unique screw-displacement axes

Abstract

Keywords

ASJC Scopus subject areas

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