Cited by 159Musculoskeletal pain and rehabilitationSpine and Intervertebral Disc PathologyMuscle activation and electromyography studies

Multifidus atrophy is localized and bilateral in active persons with chronic unilateral low back pain

Beneck, George J., Kulig, Kornelia·2012·Archives of Physical Medicine and Rehabilitation

Abstract

Objective To compare the lumbar multifidi muscle volume devoid of fat local to the site of pain in persons with and without chronic unilateral lower lumbar pain.Design Prospective cross-sectional design.Setting University biokinesiology laboratory.Participants Active individuals (n=14) with chronic unilateral lower lumbar pain (>1 y) were matched for age, height, weight, and activity level with healthy individuals (n=14). Individuals with back pain had minimal disability (Oswestry Disability Index [mean ± SD], 14.9%±6.3%) at the time of testing.Interventions Not applicable.Main outcome measures Multifidus and erector spinae muscle volumes at the L5-S1 levels, multifidus muscle volumes at the L4 and S2-3 levels.Results Average multifidus volume was diminished by 18.1% between groups (P=.026) only at the L5-S1 levels. There was no difference between painful and pain-free sides. There were no volume differences between groups above L5, below S1, or in erector spinae at the L5-S1 levels.Conclusions The results of this study indicate that despite a low level of disability and an activity level similar to that of matched control subjects, considerable localized, bilateral multifidus atrophy is present. Such impaired size of the multifidus will likely reduce its capacity to control intersegmental motion, thus increasing the susceptibility to further injury. Unlike acute unilateral low back pain (LBP), muscle size is reduced bilaterally in persons with chronic unilateral LBP.

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Crossref · 10.1016/j.apmr.2011.09.017

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  • Chronic low back pain can become a complex condition in its own right, with persistent central nervous system changes and structural changes in the back.

    “There is growing evidence that cLBP, like other chronic pain conditions, can progress beyond a symptomatic state to a complex condition unto itself,109 involving persistent anatomical and functional changes in the central nervous system9, 93, 100 in addition to structural changes in the back (e.g., degenerative spinal changes, atrophy or asymmetry of para-spinal muscles).10, 11, 14”

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Authors
Beneck, G. J., & Kulig, K.
Affiliations
  • California State University System (US)
  • University of Southern California (US)
Corresponding author
Beneck, George J.
Venue
Archives of Physical Medicine and Rehabilitation
Publisher
Elsevier BV
Published
2012-02
Volume
93
Issue
2
Pages
300-306
ISSN
0003-9993 (ISSN-L)
OpenAlex
W1977914246
Cited by
159
References
62
Citations by year
2026: 4 · 2025: 8 · 2024: 10 · 2023: 13 · 2022: 20 · 2021: 12 · 2020: 10 · 2019: 18 · 2018: 11 · 2017: 10 · 2016: 10 · 2015: 12 · 2014: 14 · 2013: 5 · 2012: 2
FWCI
7.75
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Physical Medicine and Rehabilitation (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pharmacology › Musculoskeletal pain and rehabilitation
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Spine and Intervertebral Disc Pathology
  • Physical Sciences › Engineering › Biomedical Engineering › Muscle activation and electromyography studies
Keywords
chronic low back pain, multifidus, muscle atrophy, erector spinae, muscle volume, lumbar spine, Oswestry Disability Index, physically active individuals
MeSH terms
Adult, Analysis of Variance, Chronic Disease, Cross-Sectional Studies, Female, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Muscular Atrophy, Prospective Studies, Matched-Pair Analysis, Low Back Pain, Muscle, Skeletal

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