Biomechanical study on different internal fixations for acetabular transverse fracture through the anterior approach
HE Quan-jie
LI Li-geng
WU Xiao-bo
MA Ai-guo
XU Feng-song
LIU Hong-yang
WANG Lei
Abstract：Objective To compare the biomechanic stability of three different internal fixations for trans-vers acetabular fractures through the anterior approach.Methods Eighteen transverse acetabular fracture models were randomly divided into three groups (n=6).The fractures were fixed with simple lag screws in group LS,with reconstruction plate in group RP,and with locking reconstruction plate in group LP.Continuous axial loading was imposed until the fixation failed.The longitudinal displacements,loading of failed internal fixation and axial stiffness were measured and compared by axial loading experiment between groups.Results Longitudinal displacements of group LS was longer than those of group RP and LP( P<0.05) .The maximum load and axial stiffness of group LS were smaller than those of group RP and LP( P<0.05) .However,there was no significant difference in the longitu-dinal displacements,loading of failed internal fixation and axial stiffness between group RP and LP ( P>0.05 ) . Conclusion For the acetabular transverse fractures, locking reconstruction plate and reconstruction plate internal fixation can provide greater stability than simple lag screws.And the biomechanic stability of internal fixation with locking reconstruction plate is similar to reconstruction plate.
Keywords：acetabulum fractureinternal fixationbiomechanics
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 284-287 )