Biceps tenotomy in the presence of a supraspinatus tear alters the adjacent intact tendons and glenoid cartilage |
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| Institution: | 1. Univ Lyon, Université Claude Bernard Lyon 1, IFSTTAR, LBMC UMR_T9406, F69622 Lyon, France;2. Univ Lyon, Université Claude Bernard Lyon 1, INSERM, Lyos UMR1033, F69622 Lyon, France;3. Service de Radiologie, Centre Hospitalier Lyon Sud, Pierre-Bénite, France;4. Service de chirurgie orthopédique et traumatologique – Hôpital d''instruction des armées Desgenettes, 69003 Lyon, France;1. Department of Sports Medicine and Health Promotion, Friedrich-Schiller University Jena, Wöllnitzer Straße 42, D-07749 Jena, Germany;2. Center of Interdisciplinary Prevention of Diseases related to Professional Activities, Friedrich-Schiller University Jena, D-07737 Jena, Germany;3. Department of Sports and Motion Science, University Stuttgart, Allmandring 28, D-70569 Stuttgart, Germany;4. Department of Sports Management, University Bayreuth, Universitätsstraße 30, D-95440 Bayreuth, Germany;1. Department of Orthodontics, School of Dentistry, Showa University, Tokyo, Japan;2. Department of Mechanical Engineering, School of Engineering, Tokyo Institute of Technology, Tokyo, Japan;1. Department of Medicine (DIMED), Geriatrics Division, University of Padova, Italy;2. Department of Geriatrics, Azienda Sanitaria dell''Alto Adige, Bolzano, Italy;3. Emergency Department, Azienda Sanitaria dell''Alto Adige, Bolzano, Italy;4. National Research Council, Institute of Neuroscience, Aging Branch, Padova, Italy;1. KU Leuven, Institute for Orthopaedic Research and Training, Leuven, Belgium;2. KU Leuven, Lab on Cardiovascular Imaging and Dynamics, Dept. of Cardiovascular Sciences, Leuven, Belgium;3. University Hospitals Leuven, Dept. of Orthopaedics, Campus Pellenberg, Pellenberg, Belgium |
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| Abstract: | A rotator cuff tear is a common injury in athletes and workers who repeatedly perform overhead movements, and it is not uncommon for this demographic to return to activity shortly after treatment. A biceps tenotomy is often performed in the presence of a rotator cuff tear to help reduce pain and improve joint function. However, the effect of this procedure on the surrounding tissues in the glenohumeral joint is unknown. Therefore, the purpose of this study was to investigate the effect of a biceps tenotomy in the presence of a supraspinatus rotator cuff tear followed by overuse activity on ambulatory function and mechanical and histologic properties of the remaining rotator cuff tendons and glenoid cartilage. 46 rats underwent 4 weeks of overuse activity to create a tendinopathic condition, then were randomized into two groups: unilateral detachment of the supraspinatus tendon or detachment of the supraspinatus and long head of the biceps tendons. Ambulatory measurements were performed throughout the 8 weeks prior to euthanasia, followed by analysis of the properties of the remaining intact tendons and glenoid cartilage. Results demonstrate that shoulder function was not effected in the biceps tenotomy group. However, the intact tendons and glenoid cartilage showed altered mechanical and histologic properties. This study provides evidence from an animal model that does not support the use of tenotomy in the presence of a supraspinatus tendon rotator cuff tear, and provides a framework for physicians to better prescribe long-term treatment strategies for patients. |
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| Keywords: | Rotator cuff Animal model Overuse injury |
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