| A radiographic analysis of the effects of glenosphere position on scapular notching following reverse total shoulder arthroplasty. | |
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MedLine Citation:
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PMID: 21398149 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: Multiple biomechanical studies have analyzed the potential influence of inferior glenosphere tilt on scapular notching in reverse total shoulder arthroplasty (RTSA). The purpose of this study was to clinically determine the likelihood of scapular notching in a series of shoulders, with the glenospheres placed in neutral versus inferior tilt. METHODS: From a database of all RTSA performed by the senior author, shoulders with a Delta III-type prosthesis and minimum 12-month follow-up (71 shoulders) were included. Notching in shoulders with neutrally placed glenosphere base plates (Group 1) was compared to notching with 10-15° inferiorly tilted base plates (Group 2). The prosthesis-scapular border angle (PSBA) was also defined and used to determine whether the radiographically quantified amount of inferior tilt was predictive of scapular notching independent of group assignment. RESULTS: There were no significant differences in the grade of notching or incidence of notching between groups 1 and 2 after adjusting for length of follow-up and prosthesis selection. The PSBA was also not predictive of scapular notching. CONCLUSION: Despite previous biomechanical studies' predictions that inferiorly tilting the glenosphere might reduce inferior scapular neck impingement and subsequent scapular notching, our data showed no difference at 1-year follow-up. |
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Authors:
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Laurence B Kempton; Mamtha Balasubramaniam; Elizabeth Ankerson; J Michael Wiater |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-12 |
Journal Detail:
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Title: Journal of shoulder and elbow surgery / American Shoulder and Elbow Surgeons ... [et al.] Volume: - ISSN: 1532-6500 ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-3-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9206499 Medline TA: J Shoulder Elbow Surg Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Mosby, Inc. All rights reserved. |
Affiliation:
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Department of Orthopaedic Surgery, William Beaumont Hospital, Royal Oak, MI, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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