FE Modelling Tibia Bone Vibration - The Influence of Shape, Twist, and Size

Scanlan, J.; Umnova, O.; Li, F.

Abstract

The vibration response of bone has the potential to be used as a measure of bone strength for Osteoporosis detection. Modelling the vibration response requires capturing the shape of the long bones which have several complicated features. Yet modelling entire long bones does not give enough insight into the influence these features have on the vibration response. This paper identifies the key features of the shape of a tibia bone (cross-sectional shape, twist, and scale) and investigates their individual and combined effect on the eigenfrequencies of a series of finite element models. The cross-sectional shape is adjusted by changing the centroid, number of sides, and adding a second layer. The twist is added across two axes producing an inline twist and a moving centroid across the length of the bone. The scale of the cross section is changed along the length of the bone to encompass the larger proximal and distal end of the long bones. The results are discussed in the context of understanding the fundamental effects of the bone’s shape and generating datasets for machine learning algorithms.

• Presentation Conference Type: Conference Paper (unpublished)
• Conference Name: 10th Convention of the European Acoustics Association Forum Acusticum 2023
• Acceptance Date: Aug 7, 2023
• Online Publication Date: Jan 17, 2024
• Publication Date: Jan 17, 2024
• Deposit Date: Feb 21, 2024
• Publicly Available Date: Feb 21, 2024
• Journal: Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.61782/fa.2023.1141