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Updated: Jun 4, 2026
07:16
Finite Element Analysis Model for Assessing Expansion Patterns from Surgically Assisted Rapid Palatal Expansion
Published on: October 20, 2023
Finite element analysis animated simulation of velopharyngeal closure
P D Srodon1, M E Miquel, M J Birch
1Vascular Clinical Academic Unit, St. Bartholomew's and The Royal London Hospitals, London, United Kingdom. paul.srodon@bartsandthelondon.nhs.uk
Summary
Finite element analysis simulations reveal how levator veli palatini angle and submucous clefts impact velopharyngeal closure. Muscle contributions vary with angle, affecting speech and swallowing function.
Area of Science:
- Biomechanics
- Medical Imaging
- Computational Modeling
Background:
- Velopharyngeal closure is crucial for speech and swallowing.
- Understanding factors influencing closure is vital for treating related disorders.
- Previous studies lacked detailed biomechanical analysis of velopharyngeal function.
Purpose of the Study:
- To investigate factors affecting velopharyngeal closure using finite element analysis (FEA) animated simulations.
- To create a subject-specific FEA model of the human soft palate.
- To analyze the impact of levator veli palatini angle, palatopharyngeus muscle contribution, and submucous cleft on velopharyngeal closure.
Main Methods:
- A multicomponent FEA model of a human soft palate was developed from MRI data.
- Hyperelastic material properties (neo-Hookean) were assigned to tissues.
- Simulations incorporated gravity and muscle forces (levator veli palatini, palatopharyngeus) to model closure dynamics.
- Variations in levator veli palatini angle, palatopharyngeus action, and submucous cleft presence were simulated.
Main Results:
- FEA simulations demonstrated anthropomorphic behavior of the soft palate.
- Reduced levator veli palatini angle decreased velopharyngeal closure effectiveness.
- Palatopharyngeus action and submucous clefts had complex effects, sometimes hindering and sometimes enhancing closure depending on the levator veli palatini angle.
Conclusions:
- Subject-specific FEA provides a powerful tool for understanding velopharyngeal biomechanics.
- The model accurately simulates velopharyngeal closure, supporting previous findings on anatomical factors.
- Findings highlight the intricate interplay of muscle function, anatomical variations, and velopharyngeal closure efficiency.
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