Abstract Objective To study the biomechanical stability of Reticular Loop Ligature Fixation.Methods 16 fresh porcine knee joints were involved in this experiment.After the fracture model was made in uniform size,all samples were randomly divided into two groups:reticular loop ligature group(A) and suture anchor group(B),eight cases in each group.Biomechanical tests were made on universal electromagnetic.Each specimen firstly underwent fatigue test,then pull-out test until failure.The maximum failure load,yield load,stiffness and displacement were analyzed.Results Failure Mode:All of the 8 cases of A group went beyond the displacement limit,B group suture anchor pull-out 4 cases,suture rupture 2 cases,thread cutting 2 case.Biomechanical test:The maximum failure load and yield load:A (517.798 N,247.841 N)>B (247.469 N,123.254 N).These differences were statistically significant(P=0.001).The displacements:A (2.316 mm) <B (5.423 mm).These differences were statistically significant(P=0.001).The stiffness:A (40.062 N/mm) > B (35.699 N/mm),the differences of stiffness between the three groups had no statistically significance(P=0.386).Conclusion Compared with suture anchor,Reticular Loop Ligature Fixation has better biomechanical performance and can meet the requirement of early post-operative exercise.
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