Should total hip arthroplasty femoral components be designed to subside? A radiostereometric analysis study of the Charnley Elite and Exeter stems.

@article{AlfaroAdrin2001ShouldTH,
  title={Should total hip arthroplasty femoral components be designed to subside? A radiostereometric analysis study of the Charnley Elite and Exeter stems.},
  author={Jes{\'u}s Alfaro-Adri{\'a}n and H. S. Gill and David W. Murray},
  journal={The Journal of arthroplasty},
  year={2001},
  volume={16 5},
  pages={598-606}
}
The Charnley Elite and the Exeter stems have different design concepts: The former is designed not to subside, whereas the latter is expected to subside. This radiostereometric analysis study compares the early migration of the 2 stems. For both implants, the 1st year migration was about 4 times faster than the 2nd year. The Exeter migration was predominantly distal (1 mm/y in the 1st year). It also showed slight collapse into valgus, and the head migrated slowly posteriorly (0.3 mm/y in the… CONTINUE READING