Technical tip: salvage procedure for metal-on-metal acetabular revision

John Stammers*, Steven Kahane, Vijai Ranawat, Kunalan Maruthainar, Gordon W. Blunn, John A. Skinner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Pages (from-to)161-163
Number of pages3
JournalTechniques in Orthopaedics
Volume29
Issue number3
DOIs
Publication statusPublished - Sep 2014

Keywords

  • acetabular revision
  • hip arthroplasty
  • metal-on-metal

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