Inter-rater reliability of trunk muscle morphometric analysis

Valentin, Stephanie, Yeates, Tobey DeMott, Licka, Theresia and Elliott, James (2015) Inter-rater reliability of trunk muscle morphometric analysis. Journal of Back and Musculoskeletal Rehabilitation, 28 1: 181-190. doi:10.3233/BMR-140552

Author Valentin, Stephanie
Yeates, Tobey DeMott
Licka, Theresia
Elliott, James
Title Inter-rater reliability of trunk muscle morphometric analysis
Journal name Journal of Back and Musculoskeletal Rehabilitation   Check publisher's open access policy
ISSN 1878-6324
Publication date 2015
Year available 2015
Sub-type Article (original research)
DOI 10.3233/BMR-140552
Open Access Status
Volume 28
Issue 1
Start page 181
End page 190
Total pages 10
Place of publication Amsterdam, Netherlands
Publisher IOS Press
Collection year 2016
Formatted abstract
BACKGROUND: Inter-rater reliability of generalised lumbar extensor muscle CSA has been identified, however, more detailed reliability metrics of individual trunk muscles are lacking.
OBJECTIVE: To report muscle volume and muscle fatty infiltrate (MFI) inter-rater reliability of individual trunk muscles between two novice assessors.
METHODS: Lumbar axial MRI scans from 10 healthy male participants were analysed. The muscles erector spinae (ES), multifidus (M), rectus abdominis (RA), and psoas (PS) were manually traced, region of interest quantified and muscle volume and MFI determined by both assessors. Agreement between the assessors was determined using intraclass correlation coefficients (3,1), Bland-Altman plots and Lin's concordance coefficient.
RESULTS: Good to excellent agreement was found for volume (ICC 0.77–0.96) and MFI (0.84–0.96) for all muscles on first evaluation, except for M volume, which required a second evaluation. Best agreement for muscle volume and MFI was found for ES (ICC 0.96).
CONCLUSIONS: First evaluation of muscle volume and MFI yields high to excellent inter-rater agreement, except for M, where further training and/or experience is required to achieve acceptable reliability outcomes. This may have clinical implications due to the relevance of M atrophy reported in patients with low back pain.
Keyword Inter-rater reliability
lumbar spine
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Health and Rehabilitation Sciences Publications
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