Unconstrained tripolar implants for primary total hip arthroplasty in patients at risk for dislocation.

@article{Guyen2007UnconstrainedTI,
  title={Unconstrained tripolar implants for primary total hip arthroplasty in patients at risk for dislocation.},
  author={Olivier Guyen and Vincent Pibarot and G. F. Cunha - Vaz and Christophe J Chevillotte and Jean-Paul Carret and Jacques B{\'e}jui-Hugues},
  journal={The Journal of arthroplasty},
  year={2007},
  volume={22 6},
  pages={849-58}
}
We performed a retrospective study on 167 primary total hip arthroplasty (THA) procedures in 163 patients at high risk for instability to assess the reliability of unconstrained tripolar implants (press-fit outer metal shell articulating a bipolar polyethylene component) in preventing dislocations. Eighty-four percent of the patients had at least 2 risk factors for dislocation. The mean follow-up length was 40.2 months. No dislocation was observed. Harris hip scores improved significantly. Six… CONTINUE READING

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