The Influence of Pelvic Ramus Fracture on the Stability of Fixed Pelvic Complex Fracture.
This study aims to evaluate the biomechanical mechanism of pelvic ring injury for the stability of pelvis using the finite element (FE) method. Complex pelvic fracture (i.e., anterior column with posterior hemitransverse lesion) combined with pelvic ramus fracture was used to evaluate the biomechanics stability of the pelvis. Three FE fracture models (i.e., Dynamic Anterior Plate-Screw System for Quadrilateral Area (DAPSQ) for complex pelvic fracture with intact pubic ramus, DAPSQ for complex pelvic fracture with pubic ramus fracture, and DAPSQ for complex pelvic fracture with fixed pubic ramus fracture) were established to explore the biomechanics stability of the pelvis. The pubic ramus fracture leads to an unsymmetrical situation and an unstable situation of the pelvis. The fixed pubic ramus fracture did well in reducing the stress levels of the pelvic bone and fixation system, as well as displacement difference in the pubic symphysis, and it could change the unstable situation back to a certain extent. The pelvic ring integrity was the prerequisite of the pelvic stability and should be in a stable condition when the complex fracture is treated.
Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, 79 Yingze Road, Taiyuan 030024, China.
Jianyin
J
Lei
Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, 79 Yingze Road, Taiyuan 030024, China.
Yue
Y
Zhang
Mechanics College, Taiyuan University of Technology, Taiyuan 030024, China.
Guiying
G
Wu
Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, 79 Yingze Road, Taiyuan 030024, China.
Zhihua
Z
Wang
Department of Orthopedics, Wuhan General Hospital of Guangzhou Command, 627 Wuluo Road, Wuhan 430070, China.
Xianhua
X
Cai
D001696:Biomechanical Phenomena; D001860:Bone Plates; D001863:Bone Screws; D003198:Computer Simulation; D055119:Elastic Modulus; D020342:Finite Element Analysis; D005593:Fracture Fixation, Internal; D050723:Fractures, Bone / Q000503:physiopathology* / Q000601:surgery*; D006801:Humans; D021621:Imaging, Three-Dimensional; D008953:Models, Anatomic; D008954:Models, Biological; D010384:Pelvic Bones / Q000293:injuries* / Q000473:pathology / Q000503:physiopathology; D013314:Stress, Mechanical