Objective:To evaluate the clinical effect of multiple needle puncture(MNP)release of medial collateral ligament in varus total knee arthroplasty(TKA)for patients.Methods:The clinical data of 120 patients with varus knee osteoarthritis who underwent TKA from June 2018 to June 2020 were retrospectively studied.There were 27 males and 93 females.The age ranged from 66 to 86 years,with an average age of 72 years.The patients were divided into the MNP group(n=58)and control group(n=62)according to whether the medial collateral ligament was released by multiple needle punctures during operation.The joint range of motion(ROM),HSS score,hip knee ankle angle(HKA),varus and valgus stress angle,and AKSS activity and function score were recorded before the operation and at 1-year follow-up.Results:All 120 patients were followed up as planned,with an average time of(16.4±6.7)months.The preoperative HKA of the MNP group(9.75±3.08)° was significantly different from that of the control group(8.31±2.80)°(P=0.009).The preoperative dif-ference in the varus-valgus stress angle of the MNP group was significantly different from that of the control group(Z=-2.119,P=0.034).After TKA,the ROM,WOMAC score,HSS score,varus stress angle,valgus stress angle,the difference in varus-valgus stress angle,HKA,and AKSS activi-ty and function score were significantly improved in both groups,while no significant difference was found between the two groups.Conclusion:MNP is an effective,reproducible,and safe method for the treatment of varus osteoarthritis.We believe that the MNP technique can gradually lengthen the medial soft tissue without the risk of excessive lengthening or medial collateral ligament(MCL)rup-ture and without compromising the postoperative knee function and range of motion.
Total Knee ArthroplastyKnee VarusLigament BalancingMultiple Needle PuncturingEfficacy
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