Publications by authors named "Emilie A Crosnier"
Background: Most femoral components used now for total hip arthroplasty are modular, requiring a strong connection at assembly. The aim of this study was to assess the effect of assembly force on the strength of head-trunnion interface and to measure the initial displacement of the head on the trunnion with different assembly forces.
Methods: Three assembly load levels were assessed (A: 2 kN, B: 4 kN, C: 6 kN) with 4 implants in each group.
The hip joint is subjected to cyclic loading and motion during activities of daily living and this can induce micromotions at the bone-implant interface of cementless total hip replacements. Initial stability has been identified as a crucial factor to achieve osseointegration and long-term survival. Whilst fixation of femoral stems achieves good clinical results, the fixation of acetabular components remains a challenge.
View Article and Find Full Text PDFA novel method to assess primary stability of press-fit acetabular cups.
Proc Inst Mech Eng H
November 2014
Article Synopsis
- Initial stability is crucial for successful osseointegration of press-fit acetabular cups in hip replacements, which is often not accurately assessed in current in vitro methods.
- The study explored how bone density and acetabular shape impact cup stability using a new technique to measure micromotion under realistic loading conditions.
- Results showed that lower bone density, such as in osteoporotic cases, leads to increased micromotion and a higher risk of cup loosening, highlighting the limitations of simplified models in evaluating cup stability.