Static and gait finite element analysis on individualized titanium alloy pelvic prosthesis manufactured by 3D printing
10.16156/j.1004-7220.2017.06.01
- VernacularTitle:3D打印钛合金个性化骨盆假体静态和步态有限元分析
- Author:
Ning LI
1
;
Han YANG
2
;
Qiu-yue HUANG
3
;
Yuan-jing XU
1
;
Kun YE
4
;
Yong LI
2
;
Jia-wen LI
1
;
Wen WU
5
;
Chao YU
5
;
Yong-qiang HAO
5
;
Meng-ning YAN
5
;
Hui-wu LI
5
;
Jin-wu WANG
1
,
6
;
Ke-rong DAI
1
,
6
Author Information
1. School of Biomedical Engineering, Shanghai Jiao Tong University
2. School of Material Science and Engineering, Southwest Jiaotong University
3. School of Sports Science, Shanghai University of Sport
4. School of Mechanical and Electrical Engineering, Henan University of Science and Technology
5. Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine
6. Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine
- Publication Type:Journal Article
- Keywords:
Pelvis;
3D printing;
Finite element analysis;
Pelvic prosthesis;
Gait
- From:
Journal of Medical Biomechanics
2017;32(6):E487-E493
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the biomechanical properties of 3D printed individualized titanium alloy pelvic prosthesis in static and gait states by the method of finite element analysis. Methods Three patients with different types of pelvic tumors were treated by hemi-pelvic arthroplasty with resection of hemi-pelvis. CT and MRI were performed before the surgery, and the corresponding individualized titanium alloy pelvic prostheses were designed. The pelvic models were reconstructed with 3D reconstruction technique, and then assembled with the individualized pelvic prostheses. The human skeletal muscle model was established by AnyBody software to perform gait dynamics analysis. The stress distribution and stress concentration areas of 3 reconstructed pelvic models in static and gait states were obtained by ABAQUS. Results Under both static and gait conditions, the maximum stress of the 3 pelvic prostheses was smaller than the yield strength of the titanium alloy. The pelvic ring of the reconstructed pelvis could meet the rule of stress conduction. The patients’ daily life returned to normal condition after the surgery. Conclusions The effect of 3D prosthetic titanium prosthesis on recovery of pelvic ring is satisfactory, and its effectiveness and stability can meet the requirement of human biomechanics. The analytic results can provide references for clinicians and prosthesis designers.
