Finite element analysis of the pelvis including gait muscle forces: an investigation into the effect of rami fractures on load transmission

Journal of Experimental Orthopaedics

Torsten Gerich¹  Jens Kelm²  Pierre-Louis Ricci³  Stefan Maas³ 

[1] Centre Hospitalier de Luxembourg, Service de Traumatologie;Chirurgisch-Orthopädisches Zentrum;Research Unit in Engineering Sciences, Campus Kirchberg, Université du Luxembourg;

关键词: Pelvic ring fracture;    Biomechanics of the pelvis;    Physiological loadings of the gait;    Muscle forces;    Finite element analysis;   

DOI  :  10.1186/s40634-018-0151-7

来源: DOAJ

【 摘 要 】

Abstract Background The objective of the study is to investigate the load transmission within the pelvic ring under physiological loading during gait and to correlate these results with clinical findings. In a second approach, we analysed how load distribution is altered by fractures of the anterior pelvic ring. Methods Muscle forces and joint reaction forces are calculated by inverse dynamics and implemented in a finite element pelvis model including the joints. Results With the intact configuration and according to the moment of the gait, left and right superior and inferior rami show the highest stresses of the model, corresponding to the typical location of an anterior pelvic ring fracture. A superior ramus fracture induces larger stresses to the lower ramus and a slight increase of stresses on the posterior structures. A total disruption of anterior rami redirects the loads to the back of the pelvis and introduces significantly higher stresses on the posterior structures. Conclusions This investigation enhances the understanding of the biomechanics of the pelvis and highlights the important role of the rami in load carrying and in maintaining integrity of the pelvic ring.

【 授权许可】

Unknown