1. Association between kyphosis and subacromial impingement syndrome: LOHAS study.
- Author
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Otoshi K, Takegami M, Sekiguchi M, Onishi Y, Yamazaki S, Otani K, Shishido H, Kikuchi S, and Konno S
- Subjects
- Adult, Aged, Aged, 80 and over, Cohort Studies, Cross-Sectional Studies, Dyskinesias complications, Dyskinesias physiopathology, Female, Health Surveys, Humans, Kyphosis complications, Male, Middle Aged, Range of Motion, Articular, Scapula physiopathology, Shoulder physiopathology, Shoulder Impingement Syndrome etiology, Thoracic Vertebrae physiopathology, Kyphosis physiopathology, Shoulder Impingement Syndrome physiopathology, Shoulder Joint physiopathology
- Abstract
Background: Kyphosis is a cause of scapular dyskinesis, which can induce various shoulder disorders, including subacromial impingement syndrome (SIS). This study aimed to clarify the impact of kyphosis on SIS with use of cross-sectional data from the Locomotive Syndrome and Health Outcome in Aizu Cohort Study (LOHAS)., Methods: The study enrolled 2144 participants who were older than 40 years and participated in health checkups in 2010. Kyphosis was assessed by the wall-occiput test (WOT) for thoracic kyphosis and the rib-pelvic distance test (RPDT) for lumbar kyphosis. The associations between kyphosis, SIS, and reduction in shoulder elevation (RSE) were investigated., Results: Age- and gender-adjusted logistic regression analysis demonstrated significant association between SIS and WOT (odds ratio, 1.65; 95% confidence interval, 1.02, 2.64; P < .05), whereas there was no significant association between SIS and RPDT. Multivariable logistic regression analysis demonstrated no significant association between SIS and both WOT and RPDT, whereas there was significant association between SIS and RSE., Conclusion: RSE plays a key role in the development of SIS, and thoracic kyphosis might influence the development of SIS indirectly by reducing shoulder elevation induced by the restriction of the thoracic spine extension and scapular dyskinesis., (Copyright © 2014 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)
- Published
- 2014
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