Early Clinical Study Of Minimally Invasive Midvastus Approach TKA For The Treatment Of Mild Valgus Knee

ObjectivesThis article aims to study the difference in the early clinical efficacy of minimally invasive midvastus approach and traditional parapatellar approach in the treatment of mild valgus knee in TKA,and further guide clinical work.MethodsA retrospective analysis of cases of mild valgus knees treated with TKA in our department from January 2017 to January 2019,including 46 patients with Krackow type type I or type II valgus knee joints,using the midvastus medial approach(22 cases in the minimally invasive group,including 1 male and 21 females,with an average age of 61.64± 9.24 and an average BMI of 26.26 ± 4.65.64.17 ± 8.24,average BMI 28.01 ± 5.64)TKA was used to compare the early clinical effects.The main research contents include:1.Preoperative evaluation of age,BMI,gender,VAS score,valgus degree,transthigh circumference(10 cm above patella),WOMAC and KSS scores.2.During the operation,record the length of the incision,the tourniquet time,and the degree of soft tissue loosening.3.Postoperative follow-up straight leg raising time,VAS score,KSS score,WOMAC score,additional dosage of opioids,complications,postoperative X-ray and prosthesis position.4.Statistical methods: the measurement data is described as mean ± standard deviation,and the independent sample t test is used for comparison between groups;the count data is described as the number of cases(percentage),the chi-square test is used for comparison between groups,and the test direction is bilateral.P <0.05 considered the difference to be statistically significant,and SPSS 25.0 version was used for statistical analysis of the data.ResultsThe follow-up period was 10-18 months,with an average of 12.6 months.1.There was no statistical difference in preoperative age,BMI,gender,preoperative VAS score,preoperative WOMAC score,preoperative KSS score,preoperative valgus degree,and preoperative thigh circumference(10 cm above patella).The academic difference(P <0.05)indicates that the two groups are comparable.2.The minimally invasive group's tourniquet time,incision length,postoperative straight leg raising time,early postoperative(within 1 week)visual analogue scale(VAS),knee joint random of motion(ROM)and KSS score are better than the traditional group(P <0.05).3.No statistical difference was found in KSS score,WOMAC score,VAS score,knee ROM,lower limb prosthesis mechanical axis,etc.from 6 weeks to 1 year after operation(P> 0.05).4.No complications such as deep vein thrombosis of lower limb,infection of prosthesis and aseptic loosening occurred in both groups.ConclusionFor patients with knee valgus,the minimally invasive midvastus femoral approach is smaller than the traditional approach,with less pain,and early recovery of knee ROM and quadriceps strength.