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Association between forearm cortical bone properties and handgrip strength in women with distal radius fractures: A cross-sectional study

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  • Seok Woo Hong
  • Jeong-Hyun Kang
  • Jong Seop Kim
  • Hyun Sik Gong

Abstract

Objectives: Mechanical and biochemical bone properties are influenced by muscles. However, the muscle-bone interaction has not been fully elucidated regarding the upper extremities. The objective of the present study was to evaluate the mechanical muscle-bone interaction at the forearm by evaluating the relationship between the properties of three-dimensional (3D) forearm cortical bone models derived from conventional computed tomography (CT) images and handgrip strength (HGS). Methods: A total of 108 women (mean age, 75.2 ± 9.4 years; range, 62–101 years) with a distal radius fracture who took conventional CT scans for the assessment of the fracture were included in this study. Distal radius 3D models were reconstructed and the average cortical bone density (Cd) and thickness (Ct) of the region of interest (ROI), which might be affected by the forearm flexor muscles, were calculated using a 3D modeling software. Clinical parameters including HGS, lumbar and hip bone mineral densities (BMDs), and other demographic factors were also obtained. A multivariate linear regression analysis was performed to identify relevant factors associated with HGS. Results: HGS was found to be independently associated with height and Cd, but no significant difference was found between HGS and Ct, age, weight, as well as lumber and hip BMDs. Conclusions: Cortical bone density might be associated with HGS, which is generated by the forearm flexor muscles. Hence, the mechanical muscle-bone interaction in the upper extremities could be supported by the present study.

Suggested Citation

  • Seok Woo Hong & Jeong-Hyun Kang & Jong Seop Kim & Hyun Sik Gong, 2020. "Association between forearm cortical bone properties and handgrip strength in women with distal radius fractures: A cross-sectional study," PLOS ONE, Public Library of Science, vol. 15(12), pages 1-13, December.
    • Handle: RePEc:plo:pone00:0243294
    DOI: 10.1371/journal.pone.0243294
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    References listed on IDEAS

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    1. Chung Reen Kim & Young-Jee Jeon & Taeheum Jeong, 2019. "Risk factors associated with low handgrip strength in the older Korean population," PLOS ONE, Public Library of Science, vol. 14(3), pages 1-14, March.
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