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DC Field | Value | Language |
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dc.contributor.author | de Steiger, Richard | - |
dc.contributor.other | Kent, Michael | - |
dc.contributor.other | Edmondson, Mark | - |
dc.contributor.other | Ebert, Jay | - |
dc.contributor.other | Nivbrant, Nils | - |
dc.contributor.other | Kop, Alan | - |
dc.contributor.other | Wood, David | - |
dc.date.accessioned | 2016-11-07T23:27:16Z | - |
dc.date.available | 2016-11-07T23:27:16Z | - |
dc.date.issued | 2016-03 | - |
dc.identifier.citation | J Arthroplasty. 2016 Mar;31(3):727-34. | en_US |
dc.identifier.issn | 0883-5403 | en_US |
dc.identifier.uri | http://hdl.handle.net/11434/854 | - |
dc.description.abstract | BACKGROUND: Many exchangeable neck hip systems have been withdrawn because of fretting corrosion at the neck/stem coupling. METHOD: Our prospective randomized study evaluating stem stability (Roentgen stereophotogrammetric analysis, dual-energy x-ray absorptiometry) and clinical outcomes between the K2/Apex hip systems was ceased early because of a withdrawal of the stems which had an unfavorably high early revision rate reported in the Australian Orthopaedic Association National Joint Registry (9.3% at 3 years). RESULTS: At 2 years, there are no clinical differences between the stems. Roentgen stereophotogrammetric analysis has identified a high proportion of potentially concerning subsidence and retroversion in both groups, more marked in the K2 stem, although mostly in asymptomatic patients. Dual-energy x-ray absorptiometry has shown similar bone density around the stems. Retrieval analysis of 3 study patients showed fretting corrosion of the antirotation pin and aseptic lymphocyte-dominated vasculitis-associated lesion, with no relationship to bearing type or size. Analysis of 7 further nonstudy K2/Apex stems confirmed similar corrosion. CONCLUSION: This study shows potentially concerning subsidence of both stems and is the first to describe corrosion at the neck-stem interface and a relationship to metal-related pathology. | en_US |
dc.publisher | Elsevier | en_US |
dc.subject | Revision Hip Arthroplasty | en_US |
dc.subject | Subsidence | en_US |
dc.subject | RSA | en_US |
dc.subject | ALVAL | en_US |
dc.subject | Retrieval | en_US |
dc.subject | Metal Pathology | en_US |
dc.subject | Roentgen Stereophotogrammetric | en_US |
dc.subject | Analysis | en_US |
dc.subject | Fretting Corrosion | en_US |
dc.subject | Stem Stability | en_US |
dc.subject | Neck-Stem Interface | en_US |
dc.subject | Musculoskeletal Clinical Institute, Epworth HealthCare, Victoria, Australia | en_US |
dc.title | Stem migration and fretting corrosion of the antirotation pin in the K2/Apex hip system. | en_US |
dc.type | Journal Article | en_US |
dc.identifier.doi | 10.1016/j.arth.2015.10.004 | en_US |
dc.identifier.journaltitle | The Journal of Arthroplasty | en_US |
dc.description.pubmeduri | https://www.ncbi.nlm.nih.gov/pubmed/26723860 | en_US |
dc.description.affiliates | Perth Orthopaedic Institute, Perth, Western Australia, Australia. | en_US |
dc.description.affiliates | CITRA (Centre for Implant Technology and Retrival Analysis) Medical Engineering and Physics, Perth, Western Australia, Australia. | en_US |
dc.description.affiliates | AOA National Joint Registry, Data Management & Analysis Centre, School of Population Health, University of Adelaide, Adelaide, South Australia, Australia. | en_US |
dc.type.studyortrial | Prospective Study | en_US |
dc.type.contenttype | Text | en_US |
Appears in Collections: | Musculoskeletal |
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