Abstract
We describe a salvage revision technique used in a patient with a painful metal-on-metal hip replacement, with local soft tissue swelling, lymphadenopathy, and elevated cobalt and chromium ions (Co 4.1 ppb and Cr 4.2 ppb). Cementing a polyethylene liner into an acetabular shell or cage is not new but, to date, there are no reports of cementing into a low-friction large-diameter metal bearing. Pull-out testing after roughening the highly polished cobalt chrome surface using a carbide burr increased pull-out strength from 1179 to 3500 N, equivalent to existing cement-in techniques. Following revision, metal ions returned to normal, hip function improved, and at 2 years' follow-up there was no evidence of loosening. This is a promising technique for revision hip surgeons in select patients.
Original language | English |
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Pages (from-to) | 161-163 |
Number of pages | 3 |
Journal | Techniques in Orthopaedics |
Volume | 29 |
Issue number | 3 |
DOIs | |
Publication status | Published - Sept 2014 |
Keywords
- acetabular revision
- hip arthroplasty
- metal-on-metal