Does a novel bridging collar in endoprosthetic replacement optimise the mechanical environment for osseointegration? A finite element study.

ABSTRACT: Introduction: Limb-salvage surgery using endoprosthetic replacements (EPRs) is frequently used to reconstruct segmental bone defects, but the reconstruction longevity is still a major concern. In EPRs, the stem-collar junction is the most critical region for bone resorption. We hypothesised that an in-lay collar would be more likely to promote bone ongrowth in Proximal Femur Reconstruction (PFR), and we tested this hypothesis through validated Finite Element (FE) analyses simulating the maximum load during walking. Methods: We simulated three different femur reconstruction lengths (proximal, mid-diaphyseal, and distal). For each reconstruction length one in-lay and one traditional on-lay collar model was built and compared. All reconstructions were virtually implanted in a po

SUBMITTER: Fraterrigo G 

PROVIDER: S-EPMC10277679 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature