Ann Geriatr Med Res.  2019 Sep;23(3):141-148. 10.4235/agmr.19.0030.

Relationships between Spinal Sarcopenia and Spinal Sagittal Balance in Older Women

Affiliations
  • 1Department of Radiology, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.
  • 2Department of Rehabilitation Medicine, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea. lsy126@snu.ac.kr
  • 3Department of Radiology, Seoul National University Hospital, Seoul, Korea.
  • 4Department of Neurosurgery, Gyeongsang National University Hospital, Jinju, Korea.

Abstract

BACKGROUND
Spinal sarcopenia is receiving renewed attention as a cause of spinal sagittal imbalance. However, the relationships between spinal sarcopenia and spinal sagittal balance (SSB) have not been thoroughly investigated. We evaluated the relationships between SSB parameters and sarcopenic indices with lumbar paraspinal muscle (LPM) quantity and strength in healthy older adults.
METHODS
Twenty-four healthy community-dwelling older women were enrolled. Demographic variables, conventional sarcopenic indices, isometric back muscle strength, and SSB parameters, as well as results of functional examinations and lumbar spine computed tomography scan with LPM cross-sectional area (CSA) and density assessments, were examined. The independent effect on the sum of the total LPM CSA was determined using multivariable regression analysis adjusted for age, appendicular skeletal muscle mass, gait speed, handgrip strength, back extensor strength, and pelvic tilt (PT) angle.
RESULTS
PT angle was significantly correlated with the sum of the total LPM CSA and mean LPM density (r=-0.502, p=0.015 and r=0.504, p=0.014, respectively). Furthermore, PT angle was an independent factor for the sum of the total LPM CSA (β=-0.610, p=0.021) in the multivariate regression models (R²=0.320).
CONCLUSION
Our data suggest that PT angle was significantly correlated with LPM CSA in healthy older women. To our knowledge, this is the first report to investigate the relationships of sarcopenic indices and spinal muscle degeneration with SSB.

Keyword

Sarcopenia; Spine; Paraspinal muscles; Lumbosacral region; Kyphosis

MeSH Terms

Adult
Back Muscles
Female
Gait
Humans
Kyphosis
Lumbosacral Region
Muscle, Skeletal
Paraspinal Muscles
Sarcopenia*
Spine
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