Dislocations after total hip-replacement arthroplasties.

  title={Dislocations after total hip-replacement arthroplasties.},
  author={G E Lewinnek and J. W. L. Lewis and R J Tarr and C L Compere and John F Zimmerman},
  journal={The Journal of bone and joint surgery. American volume},
  volume={60 2},
In a series of 300 total hip replacements, nine (3 per cent) dislocated. Precise measurements of the orientation of the acetabular cup were made and it was found that anterior dislocations were associated with increased acetabular-component anteversion. There was no significant correlation between cup-orientation angle and posterior dislocation. The dislocation rate for cup orientation with anteversion of 15 +/- 10 degrees and lateral opening of 40 +/- 10 degrees was 1.5 per cent, while outside… CONTINUE READING
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