Three- to six-year results with the ultima metal-on-metal hip articulation for primary total hip arthroplasty

Michael Jacobs, Robert Gorab, David Mattingly, Lorence Trick, Carleton Southworth

Research output: Contribution to journalArticle


One hundred seventy-one primary total hip arthroplasties were evaluated in a prospective, randomized study. Ninety-five involved a metal-backed cup with an all-metal liner and 76 involved a metal-backed polyethylene cup that was used as the control. All were implanted with an S-ROM cementless femoral component with a 28 mm head. The mean follow-up period was 3.7 years (range, 3.0-5.7). The average postoperative Harris hip score was 95.4 (range, 65-100) for the metal-on-metal group and 96.1 (range, 65-100) for the metal-on-polyethylene group. Radiographic results were not statistically different between the 2 groups. Early results show the metal-on-metal articulation has been successful to date and justify continued clinical use.

Original languageEnglish (US)
Pages (from-to)48-53
Number of pages6
JournalJournal of Arthroplasty
Issue number7 SUPPL.
StatePublished - Oct 1 2004



  • hip arthroplasty
  • metal-on-metal
  • moderately cross-linked polyethylene
  • osteolysis

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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