Biomechanical analysis of external locking plate in the treatment of type 42A3 fracture(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2023年第7期
- Page:
- 909-916
- Research Field:
- 生物材料与力学
- Publishing date:
Info
- Title:
- Biomechanical analysis of external locking plate in the treatment of type 42A3 fracture
- Author(s):
- WANG Yun1; 2; WANG Xiaoye1; 2; MI Lei1; 2; ZHANG Guanjun3; ZHANG Ling4; YANG Yunqi1; 2; FANG Shitao1; 2
- 1. School of Clinical Medicine, Hunan University of Chinese Medicine, Changsha 410208, China 2. Orthopedic Center, Hunan Brain Hospital (Hunan Second Peoples Hospital), Changsha 410021, China 3. School of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China 4. Nursing Department, Xiangya Third Hospital, Central South University, Changsha 410013, China
- Keywords:
- Keywords: tibial fracture finite element analysis biomechanics locking plate
- PACS:
- R318
- DOI:
- DOI:10.3969/j.issn.1005-202X.2023.07.019
- Abstract:
- Abstract: Objective To establish a finite element model of external locking plate for the treatment of tibial transverse fractures (AO-OTA: 42A3), and to analyze the stress distribution of the plate, screw and tibia in different fracture gaps, thereby providing a preliminary theoretical basis for the therapeutic scheme. Methods The DICOM file of CT scanning data of the left tibia in a healthy volunteer was obtained. Mimics 21.0 software, GeomagicStudio2014 software, SolidWorks software, Hypermesh 14.0 software, MSC.Patran 2019 software and MSC. Nastran 2019 software were used to establish the finite element models of type 42A3 fractures with different fracture gaps treated with external locking plate. The maximum stress values and distributions of tibia, plate and screw were analyzed with finite element method. Results When the fracture gaps was 0.2-2.0 mm,with the fracture gaps increasing, the maximum stress values of tibia, plate and screw were upward at the end of force loading and during the loading. The bone plate had the maximum stress value, followed by screw and tibia. The maximum stress of the locking plate was near the third, fourth, and fifth holes of the plate the maximum stress value of the screw occurred at the tail of the third screw and the maximum stress value of the tibia appeared at the fracture section. The maximum stress values of tibia, plate and screw during the loading were all greater than the maximum stress values at the end of the loading. Conclusion When the fracture gap is less than 2.0 mm, the external locking plate for the treatment of type 42A3 fractures can achieve sufficient biomechanical strength, which makes it be an alternative therapeutic option.
Last Update: 2023-07-15