| Radiologic, mechanical, and histologic evaluation of 2 glenoid prosthesis designs in a canine model. | |
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MedLine Citation:
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PMID: 11307077 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Aseptic loosening of glenoid components is a common problem associated with total shoulder arthroplasty. A new glenoid design aimed at improving fixation outcomes was compared with conventional keeled glenoids in weight-bearing canine shoulders. Radiographic, histologic, and mechanical tests were performed at 3 postoperative intervals (0, 3, and 6 months). The uncemented pegged glenoid achieved bone ingrowth around the peg flanges in each case. This result was confirmed histologically and radiographically. Mechanical results indicated that mean fixation strength increases significantly between 0 and 3 months after surgery and remains strong through 6 months. In contrast, conventional keeled glenoids were found to have partial or complete radiolucent lines around the keel in each instance, and mechanical testing demonstrated that mean fixation strength weakens significantly between 0 and 3 months after surgery and remains weak through 6 months. These results show that stem design changes can improve implant fixation. A cementless fluted peg stem was superior to a conventional cemented keel design in achieving osseous integration and fixation in a weight-bearing animal model. |
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Authors:
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M A Wirth; D L Korvick; C J Basamania; F Toro; T B Aufdemorte; C A Rockwood |
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Publication Detail:
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Type: Evaluation Studies; Journal Article |
Journal Detail:
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Title: Journal of shoulder and elbow surgery / American Shoulder and Elbow Surgeons ... [et al.] Volume: 10 ISSN: 1058-2746 ISO Abbreviation: J Shoulder Elbow Surg Publication Date: 2001 Mar-Apr |
Date Detail:
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Created Date: 2001-04-18 Completed Date: 2001-07-12 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 9206499 Medline TA: J Shoulder Elbow Surg Country: United States |
Other Details:
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Languages: eng Pagination: 140-8 Citation Subset: IM |
Affiliation:
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Department of Orthopaedics, University of Texas Health Science Center, San Antonio 78229-3900, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Arthroplasty, Replacement / instrumentation*, veterinary Biomechanics Bone Cements Cadaver Disease Models, Animal Dogs Equipment Design Joint Prosthesis* / veterinary Prosthesis Failure Shoulder Joint / pathology*, surgery Weight-Bearing |
| Chemical | |
Reg. No./Substance:
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0/Bone Cements |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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