Metal-on-Metal vs Conventional Total Hip Arthroplasty. A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Pramod B. Voleti, Keith D. Baldwin, Gwo Chin Lee

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Metal-on-metal (MOM) hip articulations represent a potential alternative to conventional metal-on-polyethylene total hip arthroplasty (THA). We performed a systematic review of the peer-reviewed literature in search of studies comparing MOM with conventional primary THA with regard to functional outcomes, radiographic outcomes, and complication rates. Four Level I randomized controlled trials remained following our screening process. The data published in these studies were extracted and aggregated using a Mantel-Haenszel cumulative fixed effects meta-analysis. We found no significant difference between MOM and conventional THA with regard to functional outcomes as measured by Harris hip scores and radiographic outcomes as measured by radiolucent lines. Patients with MOM THA did however demonstrate a 3.37 times greater complication rate (1.57, 7.26). In light of the lack of superiority, the increased complication rate, the greater cost, and the potential for adverse medical consequences associated with MOM THA, these bearing surfaces should be used with caution.

Original languageEnglish (US)
Pages (from-to)1844-1849
Number of pages6
JournalJournal of Arthroplasty
Volume27
Issue number10
DOIs
StatePublished - Dec 1 2012
Externally publishedYes

Keywords

  • Alternative bearing surfaces
  • Complication rates
  • Functional outcomes
  • Metal-on-metal
  • Radiographic outcomes
  • Total hip arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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