Hipbone Biomechanical Finite Element Analysis and Clinical Study after the Resection of Ischiopubic Tumors

作     者：Ya-qi He Xue-lin Zhang Bing-hang Tang Ang Yang 

作者机构：CT RoomZhongshan Hospital of Sun Yat-sen University(People's Hospital of Zhongshan City)ZhongshanGuangdong 528403China Radiology Imaging CenterSouthern HospitalSouthern Medical UniversityGuangzhou 510515China 

出 版 物：《Chinese Medical Sciences Journal》 (中国医学科学杂志（英文版）)

年 卷 期：2012年第27卷第3期

页      面：153-160页

核心收录：

学科分类：071011[理学-生物物理学] 0710[理学-生物学] 1002[医学-临床医学] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Supported by Medical Scientific Research Foundation Item of Guangdong Province(A2008800) Science and Technology ProgramItem of Zhongshan City(20082A071and20113A049) 

主　　题：hipbone biomechanics finite element analysis model 

摘      要：Objective To investigate the changes of hipbone biomechanics after the resection of ischiopubic tumors and their relationships with the complications in the convalescent stage, and directing the postoperative pelvic reconstruction. Methods DICOM data were used to create an intact hipbone finite element model and postoperative model. The biomechanical indices on the same region in the two models under the same boundary condition were compared. The differences of displacement, stress, and strain of the two models were analyzed with statistical methods. Results The distribution areas of the hipbone nodes displacement, stress, and strain were similar before and after the simulated operation. The sacroiliac joint nodes displacement (P=0.040) and strain (P=0.000), and the acetabular roof nodes stress (P=0.000) and strain (P=0.005) of two models had significant differences, respectively. But the sacroiliac joint nodes stress (P=0.076) and the greater sciatic notch nodes stress (P=0.825) and strain (P=0.506) did not have significant differences. Conclusions The resection of ischiopubic tumors mainly affect the biomechanical states of the homolateral sacroiliac joint and acetabular roof. The complications in the convalescent stage are due to the biomechanical changes of the sacroiliac joint and the acetabular roof and disappearances of the stabilization and connection functions of the pubic symphysis and superior ramus of pubis.