title: The prevalence and impact of sarcopenia on degenerative lumbar spinal stenosis.
abstract: OBJECTIVE
  The purpose of this study was to investigate the prevalence of sarcopenia and to examine its impact on patients with degenerative lumbar spinal stenosis (DLSS).
  
  
  METHODS
  This case-control study included two groups: one group consisting of patients with DLSS and a second group of control subjects without low back or neck pain and related leg pain. Five control cases were randomly selected and matched by age and gender (n = 77 cases and n = 385 controls) for each DLSS case. Appendicular muscle mass, hand-grip strength, sit-to-stand test, timed up and go (TUG) test, and clinical outcomes, including the Oswestry Disability Index (ODI) scores and the EuroQol EQ-5D were compared between the two groups.
  
  
  RESULTS
  The prevalence of sarcopenia, as defined by hand-grip strength, was significantly higher in the DLSS group (24%) when compared with the age- and gender-matched control group (12%) (p = 0.004). In the DLSS group, the sarcopenia subgroup demonstrated inferior results for the TUG test and ODI scores when compared with the non-sarcopenia subgroup (p = 0.006 and p = 0.039, respectively) after adjusting for age and gender.
  
  
  CONCLUSIONS
  This study demonstrated a higher prevalence of sarcopenia in patients with DLSS and highlighted its negative effect on clinical outcomes. Cite this article: Bone Joint J 2016;98-B:1093-8.
authors.affiliation: Korea Institute of Sports Science, 727 Hwarang-lo Nowon-gu, Seoul, 01794, Republic of Korea.
authors.forename: S
authors.initials: S
authors.lastname: Park
authors.affiliation: Seoul National University College of Medicine and Seoul National University Bundang Hospital, 166 Gumiro, Bundang-gu, Sungnam, 463-707, Republic of Korea.
authors.forename: H J
authors.initials: HJ
authors.lastname: Kim
authors.affiliation: Korea Institute of Sports Science, 727 Hwarang-lo Nowon-gu, Seoul, 01794, Republic of Korea.
authors.forename: B G
authors.initials: BG
authors.lastname: Ko
authors.affiliation: Korea Institute of Sports Science, 727 Hwarang-lo Nowon-gu, Seoul, 01794, Republic of Korea.
authors.forename: J W
authors.initials: JW
authors.lastname: Chung
authors.affiliation: Korea Institute of Sports Science, 727 Hwarang-lo Nowon-gu, Seoul, 01794, Republic of Korea.
authors.forename: S H
authors.initials: SH
authors.lastname: Kim
authors.affiliation: Korea Institute of Sports Science, 727 Hwarang-lo Nowon-gu, Seoul, 01794, Republic of Korea.
authors.forename: S H
authors.initials: SH
authors.lastname: Park
authors.affiliation: Korea Institute of Sports Science, 727 Hwarang-lo Nowon-gu, Seoul, 01794, Republic of Korea.
authors.forename: M H
authors.initials: MH
authors.lastname: Lee
authors.affiliation: Seoul National University College of Medicine and Seoul National University Bundang Hospital, 166 Gumiro, Bundang-gu, Sungnam, 463-707, Republic of Korea.
authors.forename: J S
authors.initials: JS
authors.lastname: Yeom
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D005080:Exercise Test; D005260:Female; D018737:Hand Strength / Q000502:physiology; D006801:Humans; D017116:Low Back Pain / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D008159:Lumbar Vertebrae; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000473:pathology; D019547:Neck Pain / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D009929:Organ Size; D011788:Quality of Life; D055948:Sarcopenia / Q000150:complications* / Q000473:pathology; D013130:Spinal Stenosis / Q000209:etiology* / Q000473:pathology; D016896:Treatment Outcome
keywords: Appendicular muscle mass; Degenerative lumbar spinal stenosis; Hand-grip power; Sarcopenia