• Geriatr Gerontol Int · Apr 2013

    Comparative Study

    High prevalence of sarcopenia and reduced leg muscle mass in Japanese patients immediately after a hip fracture.

    • Tetsuro Hida, Naoki Ishiguro, Hiroshi Shimokata, Yoshihito Sakai, Yasumoto Matsui, Marie Takemura, Yasuto Terabe, and Atsushi Harada.
    • Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan. hidat@med.nagoya-u.ac.jp
    • Geriatr Gerontol Int. 2013 Apr 1;13(2):413-20.

    AimSarcopenia-related falls and fractures are becoming an emerging problem as a result of rapid aging worldwide. We aimed to investigate the prevalence of sarcopenia by estimating the muscle mass of the arms and legs of patients with and without hip fracture.MethodsThis cross-sectional study examined 357 patients immediately after a hip fracture (the HF group) and in 2511 patients from an outpatient clinic who did not have a hip fracture (the NF group) at single institution in Japan. We carried out whole-body dual energy X-ray absorptiometry to analyze body composition with skeletal muscle mass index (SMI; lean mass/height(2)) and bone mineral density (BMD). We carried out stepwise logistic regression analysis to determine the factors associated with a hip fracture.ResultsLower appendicular SMI (P < 0.001), leg SMI (P < 0.001), and higher prevalence of sarcopenia (P < 0.001) were observed in the HF group after controlling for age and sex. The arm SMI was similar in both groups (P > 0.95). In multivariate analysis, the presence of sarcopenia, older age and lower BMD were associated with the occurrence of a hip fracture (OR 1.476, P = 0.002; OR 1.103, P < 0.001; OR 0.082, P < 0.001; respectively).ConclusionThis study showed a higher prevalence of sarcopenia and more reduced leg muscle mass in patients after a hip fracture than in the outclinic patients who did not have hip fractures. The results imply sarcopenia can be a risk factor for a hip fracture.© 2012 Japan Geriatrics Society.

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