Use of constrained acetabular components for hip instability: An average 10-year follow-up study

Barron R.B. Bremner, Devon D. Goetz, John J. Callaghan, William N. Capello, Richard C. Johnston

Research output: Contribution to journalArticle

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The short-term efficacy of using constrained acetabular components for hip instability in the total hip arthroplasty construct has been documented. However, long-term concerns including late dislocation, loosening of components, and osteolysis have not been addressed. The authors evaluated, at an average 10.3-year follow-up, 101 tripolar constrained components (Stryker Howmedica Osteonics) used in the total hip arthroplasty construct. At final follow-up, 6 hips had dislocated or had failure of the constrained component, 5 of which were revised. In addition, 4 hips were revised for aseptic loosening of the acetabular component, 4 hips were revised for aseptic femoral loosening, and 1 hip was revised for acetabular osteolysis. Considering the complexity of the cases, this component has provided durable fixation and hip stability at this intermediate-term follow-up.

Original languageEnglish (US)
Pages (from-to)131-137
Number of pages7
JournalJournal of Arthroplasty
Issue number7 SUPPL. 1
StatePublished - Oct 2003



  • Acetabular
  • Component
  • Constrained
  • Dislocation
  • Instability

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

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