Inter-rater reliability of trunk muscle morphometric analysis

Stephanie Valentin, Tobey DeMott Yeates, Theresia Licka, James Elliott

Research output: Contribution to journalArticle

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.
Original languageEnglish
Pages (from-to)181-190
JournalJournal of Back and Musculoskeletal Rehabilitation
Volume28
Issue number1
DOIs
Publication statusPublished - 26 Jan 2015
Externally publishedYes

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Muscles
Paraspinal Muscles
Rectus Abdominis
Low Back Pain
Atrophy
Healthy Volunteers
Magnetic Resonance Imaging

Keywords

  • Inter-rater reliability
  • agreement
  • MRI
  • lumbar spine
  • muscle

Cite this

Valentin, Stephanie ; Yeates, Tobey DeMott ; Licka, Theresia ; Elliott, James. / Inter-rater reliability of trunk muscle morphometric analysis. In: Journal of Back and Musculoskeletal Rehabilitation. 2015 ; Vol. 28, No. 1. pp. 181-190.
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Inter-rater reliability of trunk muscle morphometric analysis. / Valentin, Stephanie; Yeates, Tobey DeMott ; Licka, Theresia; Elliott, James.

In: Journal of Back and Musculoskeletal Rehabilitation, Vol. 28, No. 1, 26.01.2015, p. 181-190.

Research output: Contribution to journalArticle

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