Authors: Akira Ando Hiroyuki Sugaya Yoshihiro Hagiwara Norimasa Takahashi Takashi Watanabe Kenji Kanazawa Eiji Itoi
Publish Date: 2013/03/17
Volume: 37, Issue: 5, Pages: 859-864
Abstract
Between June 2005 and May 2010 497 stiff shoulders treated at our institute were included in this study Multivariable analysis for recovery with Cox proportional hazard model was performed The chief determining variable was pathogenesis idiopathic diabetic posttraumatic and confounding variables were age 49 or less 50–59 60 and above sex onset to visit interval three months or less four months or more and external rotation under 0° 0° or more or forward flexion less than 90° 90° or more or internal rotation on the first visitThere were 356 idiopathic 61 diabetic and 80 posttraumatic stiff shoulders Hazard ratio HR and 95 confidence interval CI for recovery lower HR means poor prognosis was 054 036–096 in the diabetic group p = 0007 and 092 067–125 in the posttraumatic group p = 058 compared with the idiopathic group A positive correlation was observed in ages of 60 or over HR 146 95 CI 086–165 pvalue 002 and external rotation under 0° on the first visit 071 053–096 003 No correlations were observed in sex p = 078 or onset to visit interval p = 099 Similar results were obtained when forward flexion or internal rotation was used as a confounding variable
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