Biomechanical Properties of the Modified Memory Alloy Internal Fixator for Separation of Pubic Symphysis
10.16156/j.1004-7220.2020.06.16
- VernacularTitle:改进型耻骨联合分离记忆合金内固定器的 生物力学特性
- Author:
Jun ZHOU
1
;
Yusuo GONG
1
;
Shenghua LI
1
;
Yanguo ZHU
1
Author Information
1. Department of Orthopaedics, Gansu Provincial Hospital of Traditional Chinese Medicine
- Publication Type:Journal Article
- Keywords:
memory alloy internal fixator;
separation of pubic symphysis;
dynamic compression plate;
shear force
- From:
Journal of Medical Biomechanics
2020;35(6):E750-E753
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate biomechanical characteristics of the modified memory alloy internal fixator for separation of pubic symphysis. Methods The model of pubic symphysis separation injury was established based on 10 pelvic specimens. The control group was fixed with the dynamic compression plate after reduction, and the experimental group was fixed with the modified memory alloy internal fixator for separation of pubic symphysis after reduction. The biomechanical stability for two kinds of internal fixation was compared. Results There were no loosening and fracture of internal fixation in both groups. The displacement of pubic symphysis in horizontal, anterio-posterior and vertical direction in the experimental group was obviously reduced compared with the control group (P＜0.05). Conclusions Compared with the dynamic compression plate, the modified memory alloy internal fixator for separation of pubic symphysis shows better resistance to the tensile force against horizontal and anterio-posterior direction, as well as better resistance to the vertical shear force.
