Lack of early dislocation following total hip arthroplasty with a new dual mobility acetabular design

Hip Int. 2015 Jan-Feb;25(1):34-8. doi: 10.5301/hipint.5000186. Epub 2015 Feb 3.

Abstract

Dual mobility implant designs minimise the risk of dislocation without sacrificing range of motion. Between 1st September 2008 and 31st July 2011, 5 institutions examined early clinical outcomes of a new dual mobility bearing hip system implanted in 485 primary THAs in 452 patients. Patient demographics were 46% female, a mean age of 67 years and a mean BMI of 30. Complications at a minimum of 2 years after surgery included 1 femur fracture, 1 DVT and 4 unrelated deaths. There were no dislocations. For functional outcomes, Harris Hip Scores increased from 41 to 86 (p<0.001), while VAS pain scores decreased from 5.9 to 0.7 (p<0.001). Minimal complications, excellent early clinical outcomes and the absence of early dislocations demonstrate the improved stability of this dual mobility implant system.

Publication types

  • Multicenter Study

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Arthroplasty, Replacement, Hip / adverse effects*
  • Female
  • Follow-Up Studies
  • Hip Dislocation / epidemiology
  • Hip Dislocation / etiology*
  • Hip Dislocation / physiopathology
  • Hip Prosthesis / adverse effects*
  • Humans
  • Incidence
  • Male
  • Middle Aged
  • Osteoarthritis, Hip / surgery*
  • Postoperative Complications*
  • Prosthesis Design
  • Prosthesis Failure
  • Range of Motion, Articular / physiology*
  • Retrospective Studies
  • Time Factors
  • United States / epidemiology
  • Young Adult