Affordable Access

Publisher Website

Coordinate systems for the carpal bones of the wrist

Authors
Journal
Journal of Biomechanics
0021-9290
Publisher
Elsevier
Publication Date
Volume
40
Issue
1
Identifiers
DOI: 10.1016/j.jbiomech.2005.11.015
Keywords
  • Carpal Bones
  • Coordinate System
  • Three-Dimensional
  • Posture
Disciplines
  • Computer Science
  • Medicine

Abstract

Abstract The eight small and complexly shaped carpal bones of the wrist articulate in six degrees of freedom with each other and to some extent with the radius and the metacarpals. With the increasing number and sophistication of studies of the carpus, a standardized definition for a coordinate system for each the carpal bones would aid in the reporting and comparison of findings. This paper presents a method for defining and constructing a coordinate system specific to each of the eight carpal bones based upon the inertial properties of the bone, derived from surface models constructed from three-dimensional (3-D) medical image volumes. Surface models from both wrists of 5 male and 5 female subjects were generated from CT image volumes in two neutral wrist positions (functional and clinical). An automated algorithm found the principal inertial axes and oriented them according to preset conditions in 85% of the bones, the remaining bones were corrected manually. Six of the eight carpal bones were significantly more extended in the functional neutral position than in the clinical neutral position. Gender had no significant effect on carpal bone posture in either wrist position. Correlations between the 3-D carpal posture and the commonly used 2-D clinical radiographic carpal angles are established. 3-D coordinate systems defined by the anatomy of the carpal bone, such as the ones presented here, are necessary to completely describe 3-D changes in the posture of the carpal bones.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

The crowded wrist--a case with accessory carpal bo...

on Acta Orthopaedica Scandinavica February 1999

[TRAUMATIC OSTEITIS OF CARPAL BONES AND WRIST. I].

on Rinsho hoshasen. Clinical radi... June 1964

[Sprains and dislocations of the wrist joint and c...

on Langenbecks Archiv für Chirur... 1988
More articles like this..