Biomechanical study on three-dimensional internal fixation for unstable posterior pelvic ring fracture
10.3760/cma.j.issn.1001-8050.2010.03.016
- VernacularTitle:三维内固定治疗骨盆后环不稳定骨折的生物力学研究
- Author:
Qianfa ZHANG
;
Youwei FU
;
Weidong ZHAO
;
Liang CHEN
;
Zhibin GE
;
Qingjiang PANG
- Publication Type:Journal Article
- Keywords:
Pelvis;
Fracture fixation,internal;
Biomechanics
- From:
Chinese Journal of Trauma
2010;26(3):238-241
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the biomechanical difference of two internal fixation approaches for the posterior pelvic ring fracture dislocation.Methods Six fresh adult cadaver pelvic specimens were tested biomechanically.Then,the specimens were subjected to Denis-I sacral pelvic fracture.The specimen was first fixed with improved Galveston fixation and then with improved Galveston fixation plus sacral rod.Biomechanical tests were performed from vertical and reversed directions on the fixed pelvis.Results Under vertical compression,the biomeehanical value of the improved Galveston fixation plus sacral rod was lower than that of the improved Galveston fixation,with no statistical difference between two methods(P ＞ 0.05).Under the reversed compression,the biomeehanieal value of the improved Galveston fixation plus sacral rod was lower than that of the improved Galveston fixation,with statistical difference between two groups(P ＜ 0.05).Conclusion The improved Galveston fixation combined with sacral rod can increase the anti-reverse stability of the posterior pelvic ring.
