Application And Clinical Effect Assessment On Exact Resection In Total Knee Arthroplasty

Objective: Routine and exact resection method was introduced for total knee arthroplasty (TKA).The Early clinical effect of these two methods was evaluated by measurement and analysis of the image data. We aimed at investigating the clinical value of the application of exact resection method in TKA.Methods: From May. 2007 to Mar. 2008, 40 cases were underwent TKA in our hospital. They were divided into two groups: group of routine resection and group of exact resection. Radiographs were taken preoperative and postoperatively and the posterior slope of the medial tibia plateau, knee physical valgus angle, hip- knee- ankle angle were measured. We used the KSS Scores to make out the excellence rate of clinical outcome and to compare the different excellence rate of the two groups. Moreover, through statistical comparison of the posterior slope of the medial tibia plateau, knee physical valgus angle, hip- knee- ankle angle, we evaluated the clinical outcomes and their relative factors.Results: There were 20 cases in the exact resection group were evaluated. According to the kss Scoring excellent in 16 cases, good in 2 cases, moderate in 2 cases, poor in 0 cases and the excellence rate was 90%. While there were also 20 cases in the routine resection group were studied. And also according to the kss Scoring excellent in 12 cases, good in 4 cases, moderate in 4cases, poor in 0 cases and the excellence rate was 80%. Improvement on the degrees of axial alignment of the lower extremity and The recovering motion scores of the knee in the exact resection group were much better than in routine resection group.Conclusion: The clinical outcomes of the treatment for knee osteoarthritis by using exact resection method is better than that by using routine resection method. Treatment for knee osteoarthritis that undergo exact resection method has an excellent short-term functional restoration of the knee and fewer complications. As the result, our analyses show that exact resection method is a favorable method in total knee arthroplasty.