Trunnion Corrosion Causing Failure in Metal-on-Polyethylene Total Hip Arthroplasty with Monolithic Femoral Components
| Autor: | Megan Manthe, Kurt Blasser, Christopher Beauchamp, Mary I. O'Connor |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Reconstructive Review, Vol 6, Iss 1 (2016) |
| Druh dokumentu: | article |
| ISSN: | 2331-2262 2331-2270 |
| DOI: | 10.15438/rr.6.1.131 |
| Popis: | We describe nine patients who had total hip arthroplasty failure [titanium alloy monolithic stem, cobalt-chromium head (32 mm or 36 mm), highly cross-linked polyethylene liner, metal socket] related to metal wear debris generated at the trunnion. Symptoms included pain with onset 2.9 years after THA. Preoperative serum cobalt metal ion levels were elevated [mean 8.8 ng/ml (normal < 0.9 ng/ml)] and were higher than chromium levels [mean 1.2 ng/ml (normal < 0.3 ng/ml)]. All patients had debridement of the periarticular soft tissues, stem retention, revision to ceramic head and new liner; two patients had acetabular revision. At early follow-up, 7 of 8 available patients did well, with improved cobalt (0.6 ng/ml) and little change in chromium levels. We recommend heightened awareness regarding this mode of failure. |
| Databáze: | Directory of Open Access Journals |
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