A quantitative method to measure maximal workspace of the trapeziometacarpal joint - Normal model development

Li-Chieh Kuo, William P. Cooney, Kenton R. Kaufman, Qing Shan Chen, Fong-chin Su, Kai Nan An

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Introduction: A reliable and quantitative method for measuring motion of the thumb is lacking. In particular, review of the previous methods of motion analysis of the thumb joints shows that there is no objective method for clinicians to assess the impairment of the thumb trapeziometacarpal (TMC) joint. Based on the concept of the three-dimensional (3-D) space within which the first metacarpal can move relative to the trapezium (a concept of defining and measuring the workspace of the TMC motion), we present a quantitative method for measuring motion and impairment (loss of function) of the TMC joint. Methods: Twenty normal subjects were recruited in this study. An electromagnetic device was placed over the thumb metacarpal and long finger metacarpal, the 3-D relationship between them previously established. We measured the position and orientation of the TMC motion in space. Maximum movements of the thumb TMC joint in circumduction, flexion-extension and abduction-adduction were used to construct the 3-D maximal workspace of the TMC joint. Mathematical methods were used to verify the model and calculate the maximal workspace. Results: The results of this study demonstrate accurate and repeatable measurement of 3-D TMC motion with high statistical reliability and low variability of the maximal TMC workspace. A statistically significant linear correlation between the maximal surface area and the square of the first metacarpal length was obtained. Conclusion: We conclude that a quantitatively comparative measurement of the range of motion of the TMC joint can be obtained with potential to measure motion in joints affected by arthritis or trauma and measured in both dynamic and static positions of the thumb.

Original languageEnglish
Pages (from-to)600-606
Number of pages7
JournalJournal of Orthopaedic Research
Volume22
Issue number3
DOIs
Publication statusPublished - 2004 Jan 1

Fingerprint

Thumb
Joints
Metacarpal Bones
Electromagnetic Phenomena
Articular Range of Motion
Fingers
Arthritis
Equipment and Supplies
Wounds and Injuries

All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine

Cite this

Kuo, Li-Chieh ; Cooney, William P. ; Kaufman, Kenton R. ; Chen, Qing Shan ; Su, Fong-chin ; An, Kai Nan. / A quantitative method to measure maximal workspace of the trapeziometacarpal joint - Normal model development. In: Journal of Orthopaedic Research. 2004 ; Vol. 22, No. 3. pp. 600-606.
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A quantitative method to measure maximal workspace of the trapeziometacarpal joint - Normal model development. / Kuo, Li-Chieh; Cooney, William P.; Kaufman, Kenton R.; Chen, Qing Shan; Su, Fong-chin; An, Kai Nan.

In: Journal of Orthopaedic Research, Vol. 22, No. 3, 01.01.2004, p. 600-606.

Research output: Contribution to journalArticle

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AB - Introduction: A reliable and quantitative method for measuring motion of the thumb is lacking. In particular, review of the previous methods of motion analysis of the thumb joints shows that there is no objective method for clinicians to assess the impairment of the thumb trapeziometacarpal (TMC) joint. Based on the concept of the three-dimensional (3-D) space within which the first metacarpal can move relative to the trapezium (a concept of defining and measuring the workspace of the TMC motion), we present a quantitative method for measuring motion and impairment (loss of function) of the TMC joint. Methods: Twenty normal subjects were recruited in this study. An electromagnetic device was placed over the thumb metacarpal and long finger metacarpal, the 3-D relationship between them previously established. We measured the position and orientation of the TMC motion in space. Maximum movements of the thumb TMC joint in circumduction, flexion-extension and abduction-adduction were used to construct the 3-D maximal workspace of the TMC joint. Mathematical methods were used to verify the model and calculate the maximal workspace. Results: The results of this study demonstrate accurate and repeatable measurement of 3-D TMC motion with high statistical reliability and low variability of the maximal TMC workspace. A statistically significant linear correlation between the maximal surface area and the square of the first metacarpal length was obtained. Conclusion: We conclude that a quantitatively comparative measurement of the range of motion of the TMC joint can be obtained with potential to measure motion in joints affected by arthritis or trauma and measured in both dynamic and static positions of the thumb.

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