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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Engh, Charles A. Ho, Henry |
| Description | Country affiliation: United States Author Affiliation: Engh CA ( Anderson Orthopaedic Research Institute, Alexandria, VA 22307, USA.) |
| Abstract | UNLABELLED: Larger diameter metal-on-metal (MOM) bearing hips offer the possibility of low wear and reduced risk of dislocation. We reviewed the first 126 patients (131 hips) who had a large-head (36-mm) MOM bearing surface to report the early clinical outcome and especially to determine the occurrence of dislocation and wear-related concerns. The minimum followup was 5 years (mean, 5.6 years; range, 5-7 years). We found a 98% survivorship free of component revision. No hips had been revised for dislocation. Three hips (2%) had small femoral osteolytic lesions. Because this series of patients did not completely represent our experience with this bearing surface, we queried our database for the 828 patients (945 hips) that had the same bearing surface from April 2001 to December 2008. Three patients (0.3%) had a local reaction to the MOM bearing surface on revision-retrieved tissue. All three patients presented with elevated inflammatory indices, and a purulent-appearing joint effusion at revision. The possibility of infection and the delay in diagnosing a reaction to the MOM bearing with pathology complicated management of these three patients. We continue to use this bearing surface because the 5-year results are comparable to other bearing surfaces, however, we counsel patients that a local adverse reaction to the MOM bearing surface may be a factor contributing to reoperation. LEVEL OF EVIDENCE: Level IV, retrospective clinical cohort. See Guidelines for Authors for a complete description of levels of evidence. |
| File Format | HTM / HTML |
| ISSN | 0009921X |
| e-ISSN | 15281132 |
| DOI | 10.1007/s11999-009-1063-8 |
| Journal | Clinical Orthopaedics and Related Researchtextregistered |
| Issue Number | 2 |
| Volume Number | 468 |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2010-02-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Discipline Orthopaedics Arthroplasty, Replacement, Hip Adverse Effects Foreign-body Reaction Etiology Hip Joint Surgery Hip Prosthesis Hypersensitivity Instrumentation Dislocations Prevention & Control Kaplan-meier Estimate Osteolysis Patient Selection Prosthesis Design Prosthesis Failure Radiography Reoperation Retrospective Studies Risk Assessment Time Factors |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Surgery Sports Science |
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