How screw connections influence the primary stability of acetabular cups under consideration of different bone models.
biomechanical · Level V
Where this comes from
- Record sourced from PubMed, PMID 32581456.
- Also identified by DOI 10.1016/j.jor.2020.05.020 and PMC identifier 7300235.
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Abstract
Good osteointegration of implants requires sufficient primary stability. Aim of this study was to examine the influence of screw fixation on the primary stability of press-fit cups. Two press-fit acetabular cups were tested with regard to the influence and number of screws and their primary stability. For the relatively thin-walled Allofit®-S cup, an influence of the number of screws on the different forms of movement could be demonstrated. We see a clear influence of the cup wall thickness on the elastic deformability and accordingly on the primary stability of the examined cups.
Anatomy
- pelvis
- hip