Modeling attachment and compressive loading of locking and non-locking plate fixation: a finite element investigation of a supracondylar femur fracture model

Amir Samiezadeh, Stewart McLachlin, Matthew Ng, Saeid Samiezadeh, Jeremie Larouche and Cari Whyne

Computer Methods in Biomechanics and Biomedical Engineering, 2022, vol. 25, issue 14, 1629-1636

Abstract: This study developed a finite element (FE) model of simulated locking plate fixation to examine the strain response following supracondylar femoral plate attachment and under compressive loading. An implicit FE model of a synthetic femur with a distal fracture gap stabilized with a lateral plate was evaluated following attachment and 500 N loading, considering locking and non-locking proximal screws configurations. Screw pre-tension values of 60 N for both distal and proximal non-locking screws yielded good agreement with plate experimental strain data in attached (unloaded) and loaded conditions. The results highlight the importance of pre-tensioning in modeling plate attachment using non-locking screws.

Date: 2022
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DOI: 10.1080/10255842.2022.2030730

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