File(s) under permanent embargo
Determining metacarpophalangeal flexion angle tolerance for reliable volumetric joint space measurements by high-resolution peripheral quantitative computed tomography
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 RheumatologyVolume
43Issue
10Pagination
1941-1944ISSN
0315-162XDepartment/School
Menzies Institute for Medical ResearchPublisher
Journal of Rheumatology Publishing Co. Ltd.Place of publication
CanadaRights statement
Copyright 216 The Journal of RheumatologyRepository Status
- Restricted