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Exploring the extension quantities of a medial collateral ligament pie-crusting model using a finite element method
Shogo Matsuda1, Masashi Hirakawa1, Yu Nagashima1
1Department of Orthopaedic Surgery, Oita University, Yuhu City, Oita, Japan.
Computer Methods in Biomechanics and Biomedical Engineering
|February 6, 2024
Summary
Finite element method (FEM) models of medial collateral ligament (MCL) pie-crusting were developed. Model C, featuring bundled fibers with adhesive components, proved most suitable for analyzing MCL pie-crusting during knee surgery.
Area of Science:
- Biomechanical Engineering
- Orthopedic Surgery
- Computational Modeling
Background:
- Medial collateral ligament (MCL) pie-crusting is a technique used in total knee arthroplasty to balance soft tissues.
- Further investigation using the finite element method (FEM) is needed to understand this procedure.
Purpose of the Study:
- To develop and compare three distinct FEM models of MCL pie-crusting.
- To determine the most suitable FEM model for analyzing MCL pie-crusting.
Main Methods:
- Three FEM models (A, B, C) of the MCL were created, varying in structural representation (singular elastic body, bundled elastic bodies, bundled elastic bodies with adhesive components).
- A pie-crusting simulation was implemented by introducing a central cut in each model.
- Models were subjected to simulated forces (80 N and 120 N) to assess displacement.
Main Results:
- Model A (singular elastic body) showed minimal extension (0.0068–0.010 mm).
- Model B (bundled elastic bodies) exhibited greater extension (1.34–2.01 mm).
- Model C (bundled elastic bodies with adhesive components) demonstrated intermediate extension (0.34–0.50 mm) and was identified as most suitable.
Conclusions:
- The FEM model incorporating bundled fibers with adhesive properties (Model C) accurately represents the biomechanical behavior of MCL pie-crusting.
- This model provides a valuable tool for further research and optimization of pie-crusting techniques in total knee arthroplasty.
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