Comparison of patient-specific distal femoral cutting guide and conventional instruments in minimally invasive total knee arthroplasty
Abstract：Objective To compare the application of patient-specific distal femoral bone cutting guides and conventional instruments in minimally invasive total knee arthroplasty(MIS-TKA).Methods Sixty-eight patients undergoing unilateral total knee arthroplasty from January 2016 to December 2016 in our department were selected and randomly divided into two groups.In one group,patient-specific distal femoral bone cutting guides were used.In the second group,conventional instruments were used.The tourniquet time,blood loss,full lower limb and femoral,tibial component alignments,HSS score were recorded and compared.Results The tourniquet time in the patient-specific cutting guides group was significantly shorter than that in the conventional group(P=0.07).There was no significant difference in the blood loss between the two groups(P ＞ 0.05).In the coronal alignment,There was a statistically significant difference in femoral component outliers between the two groups(P=0.040).There was no significant difference in lower extremity and tibial prosthesis outliers(P＞0.05).However,However,the outliers in the conventional surgery group are still higher than those in the patient-specific cutting guides group.Conclusion The patient-specific distal femoral bone cutting guides can significantly shorten the MIS-TKA operation time,improve the postoperative prosthetic alignment,and the operation is simple.The technology shortens the learning period,is particularly suitable for inexperienced surgeons.However,large samples and long-term follow-up studies are needed to test their long-term effects.
Keywords：Patient-specificityMinimally invasiveTotal knee arthroplasty
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 198-202 )