Three-dimensional reconstruction and biomechanical analysis of calcaneal Micro CT data
10.3760/cma.j.cn121382-20240509-00408
- VernacularTitle:跟骨Micro CT数据三维重建及生物力学分析
- Author:
Guangsheng TANG
1
;
Kai WANG
;
Yuefu DONG
;
Jian XU
;
Lu ZHOU
Author Information
1. 南京医科大学康达学院基础医学部人体解剖学系，连云港 222000
- Keywords:
Calcaneus;
Three-dimensional reconstruction;
Finite element analysis;
Sustentaculum tail;
Biomechanics
- From:
International Journal of Biomedical Engineering
2024;47(4):356-363
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To construct a three-dimensional calcaneal finite element model and study its biomechanical distribution by finite element analysis.Methods:Four large calcaneal specimens were taken from the Department of Human Anatomy of Kangda College of Nanjing Medical University in the second semester of 2021—2022. Micro CT scans were performed to obtain the image data of these specimens, and then the three-dimensional calcaneal model was reconstructed using the Mimics and Geomagic Wrap software. The obtained data were imported into the finite element analysis software to perform the material assignments and mesh delineation to obtain the three-dimensional finite element model. The boundary constraints were set, and loads were applied to the calcaneal model to perform finite element analysis calculations, and the stresses and displacements of the finite element model were extracted.Results:The three-dimensional calcaneal model had a high simulation quality. The morphology and structure were complete and without defects, and the size was consistent with that of the real calcaneus, which restores the original bony morphology and structure. The geometric appearance of the three-dimensional calcaneal model after meshing was vivid and lifelike, and without defect. The reconstructed morphology and structure of the three-dimensional model were the same as those of the three-dimensional reconstruction, the size was the same, and the main structure was clearly visible. The meshes and nodes of each component of the three-dimensional calcaneal model were uniformly distributed, and their numbers were comparable to those of the real heel bone. The maximum stresses of the three-dimensional calcaneal model were in the cortical bone, and the maximum stresses were in the same position. These two positions were the lowest part of the anterior part of heel bones. The maximum displacements in the three-dimensional calcaneal model were all less than 0.10 mm.Conclusions:A high-precision three-dimensional finite element calcaneal model has been constructed, which is of good mechanical validity.
