高级检索
当前位置: 首页 > 详情页

Biomechanical comparison of different prosthetic reconstructions in total en bloc spondylectomy: a finite element study

文献详情

资源类型:
WOS体系:
Pubmed体系:

收录情况: ◇ SCIE

机构: [1]Tianjin Univ, Tianjin Hosp, Jiefangnanlu 406, Tianjin 300210, Peoples R China [2]Hebei Univ, Dept Orthopaed, Affiliated Hosp, Baoding, Peoples R China [3]Hebei Univ, Dept Anesthesiol, Affiliated Hosp, Baoding, Peoples R China
出处:
ISSN:

关键词: TES 3D-printed prosthesis Titanium mesh cage Finite element analysis

摘要:
Objective To analyse and compare the biomechanical differences between 3D-printed prostheses, titanium mesh cages and poorly matched titanium mesh cages in total en bloc spondylectomy (TES). Methods The finite element model of T10-L2 for healthy adults was modified to make three models after T12 total spondylectomy. These models were a 3D-printed prosthesis, titanium mesh cage and prosthesis-endplate mismatched titanium mesh cage for reconstruction. The range of motion (ROM), stress distribution of the endplate and internal fixation system of three models in flexion and extension, lateral bending and axial rotation were simulated and analysed by ABAQUS. Result In flexion, due to the support of the anterior prosthesis, the fixation system showed the maximum fixation strength. The fixation strength of the 3D-printed prosthesis model was 26.73 N center dot m /degrees, that of the TMC support model was 27.20 N center dot m /degrees, and that of the poorly matched TMC model was 24.16 N center dot m /degrees. In flexion, the L1 upper endplate stress of the poorly matched TMC model was 35.5% and 49.6% higher than that of the TMC and 3D-printed prosthesis, respectively. It was 17% and 28.1% higher in extension, 39.3% and 42.5% higher in lateral bending, and 82.9% and 91.2% higher in axial rotation, respectively. The lower endplate of T11 showed a similar trend, but the magnitude of the stress change was reduced. In the stress analysis of the 3D-printed prosthesis and TMC, it was found that the maximum stress was in flexion and axial rotation, followed by left and right bending, and the least stress was in extension. However, the mismatched TMC withstood the maximum von Mises stress of 418.7 MPa (almost twice as much as the buckling state) in rotation, 3 times and 5.83 times in extension, and 1.29 and 2.85 times in lateral bending, respectively. Conclusion Different prostheses with good endplate matching after total spondylectomy can obtain effective postoperative stable support, and the reduction in contact area caused by mismatch will affect the biomechanical properties and increase the probability of internal fixation failure.

基金:
语种:
被引次数:
WOS:
PubmedID:
中科院(CAS)分区:
出版当年[2023]版:
大类 | 3 区 医学
小类 | 3 区 骨科 3 区 风湿病学
最新[2025]版:
大类 | 3 区 医学
小类 | 3 区 骨科 3 区 风湿病学
JCR分区:
出版当年[2022]版:
Q2 ORTHOPEDICS Q4 RHEUMATOLOGY
最新[2023]版:
Q2 ORTHOPEDICS Q3 RHEUMATOLOGY

影响因子: 最新[2023版] 最新五年平均 出版当年[2022版] 出版当年五年平均 出版前一年[2021版] 出版后一年[2023版]

第一作者:
第一作者机构: [1]Tianjin Univ, Tianjin Hosp, Jiefangnanlu 406, Tianjin 300210, Peoples R China
共同第一作者:
通讯作者:
推荐引用方式(GB/T 7714):
APA:
MLA:

资源点击量:15101 今日访问量:1 总访问量:961 更新日期:2025-05-01 建议使用谷歌、火狐浏览器 常见问题

版权所有©2020 河北大学附属医院 技术支持:重庆聚合科技有限公司 地址:保定市莲池区裕华东路212号