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Determining metacarpophalangeal flexion angle tolerance for reliable volumetric joint space measurements by high-resolution peripheral quantitative computed tomography

journal contribution
posted on 2023-05-20, 05:12 authored by Tom, S, Frayne, M, Manske, SL, Burghardt, AJ, Kathryn Stok, Boyd, SK, Barnabe, C

Objective: The position-dependence of a method to measure the joint space of metacarpophalangeal (MCP) joints using high-resolution peripheral quantitative computed tomography (HR-pQCT) was studied.

Methods: Cadaveric MCP were imaged at 7 flexion angles between 0 and 30 degrees. The variability in reproducibility for mean, minimum, and maximum joint space widths and volume measurements was calculated for increasing degrees of flexion.

Results: Root mean square coefficient of variance values were < 5% under 20 degrees of flexion for mean, maximum, and volumetric joint spaces. Values for minimum joint space width were optimized under 10 degrees of flexion.

Conclusion: MCP joint space measurements should be acquired at < 10 degrees of flexion in longitudinal studies.

History

Publication title

Journal of Rheumatology

Volume

43

Issue

10

Pagination

1941-1944

ISSN

0315-162X

Department/School

Menzies Institute for Medical Research

Publisher

Journal of Rheumatology Publishing Co. Ltd.

Place of publication

Canada

Rights statement

Copyright 216 The Journal of Rheumatology

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in engineering

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