Failure of Polyethylene Inlays in Cementless Total Hip Arthroplasty: A Retrieval Analysis

@inproceedings{Mueller2016FailureOP,
  title={Failure of Polyethylene Inlays in Cementless Total Hip Arthroplasty: A Retrieval Analysis},
  author={Ulrike Mueller and Christoph Lee and Christian Heisel and Marc N. Thomsen and Rudi Georg Bitsch and J Philippe Kretzer},
  booktitle={BioMed research international},
  year={2016}
}
A retrieval analysis has been performed on 50 polyethylene inlays of cementless screw ring implants (Mecring, Mecron, Berlin, Germany) to investigate the failure mechanism of this specific open cup hip arthroplasty design that has shown a high clinical failure rate. Design-specific damage modes like rim creep, collar fatigue, and backside wear were assessed. Furthermore, the inlays were measured using a CMM to determine deformation. In 90% backside wear was observed and collar fatigue occurred… CONTINUE READING