title: Paraspinal muscle denervation and balance impairment in lumbar spinal stenosis.
abstract: BACKGROUND
  Denervation of the paraspinal muscles may impair posture and displace the center of gravity. Therefore, we assessed balance impairment in patients with lumbar spinal stenosis (LSS) with and without paraspinal denervation.
  
  
  METHODS
  Thirty-two women with LSS (15 symptomatic, 17 asymptomatic), aged 42-78 years, were assessed for disability, pain, and mobility, and underwent masked mini-paraspinal mapping (mPSM). Berg Balance Scale (BBS) and device-assisted balance (DAB) tests were used for balance assessment.
  
  
  RESULTS
  The symptomatic group had worse balance and higher mPSM scores than the asymptomatic group. Among DAB tests, limit of stability (LOS) had the highest correlations with BBS and mPSM in the symptomatic group.
  
  
  CONCLUSIONS
  Paraspinal denervation correlated highly with static and dynamic balance in symptomatic patients. We recommend paraspinal mapping, balance assessment, rehabilitation, and follow-up with the LOS test for symptomatic patients.
authors.affiliation: Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Avenue, San Francisco, California, 94143, USA.
authors.forename: Emel Ece
authors.initials: EE
authors.lastname: Ozcan-Eksi
authors.affiliation: Department of Physical Medicine and Rehabilitation Marmara University Medical School, Istanbul, Turkey.
authors.forename: Ilker
authors.initials: I
authors.lastname: Yagci
authors.affiliation: Department of Physical Medicine and Rehabilitation Marmara University Medical School, Istanbul, Turkey.
authors.forename: Hatice
authors.initials: H
authors.lastname: Erkal
authors.affiliation: Department of Orthopaedic Surgery-Spine Center University of California, San Francisco, San Francisco, California, USA.
authors.forename: Sibel
authors.initials: S
authors.lastname: Demir-Deviren
mesh_terms: D000328:Adult; D000368:Aged; D004576:Electromyography; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae; D008297:Male; D008875:Middle Aged; D009068:Movement / Q000502:physiology; D009121:Muscle Denervation; D009460:Neurologic Examination; D064170:Paraspinal Muscles / Q000503:physiopathology*; D004856:Postural Balance / Q000502:physiology*; D011446:Prospective Studies; D011930:Reaction Time / Q000502:physiology; D012678:Sensation Disorders / Q000209:etiology*; D013130:Spinal Stenosis / Q000150:complications*; D013223:Statistics as Topic; D011795:Surveys and Questionnaires
keywords: balance; denervation; limits of stability; lumbar spinal stenosis; paraspinal mapping; paraspinal muscles