Objective To modify femoral resection method in primary total knee arthroplasty and verify the operative results of this modification through measurement of the thickness of the bone resection and clinical follow up. Methods The femoral resection measurement guide was modified so that the resection of the posterior femoral condyle was increased 3 mm in thickness. A total of 81 cases undergoing total knee replacement were divided into varus group and valgus group, in which the thickness of various resections were measured and compared with that of the prosthetic implants. The average follow-up time was 27.1 months. Results On average, the thickness of bone resection in both the flexion and the extension gaps was smaller than that of the prosthesis. In both groups, except for the thickness of the posterior femoral condyle, there were significant differences in other indices ( P

[Objective]A modified femoral resection method Was introduced for total knee replacement,by which the resection ofthe posterior femoral condyle was increased.This study is to verify the accuracy of resection.[Methods]In 81 knees undergoingtotal knee replacement,the thickness of vKrious cuts were measured and compared with the height of the implants.The mean val-ues of these measurements were calculated,and eompqrisons were made according to the mechanical axis using Student's t-test.[Results]On average,the thickness of bone resection in both the flexion and the extension gap was smaller than the thickness otthe prosthesis.In the varus group a minimum lateral over-resection in the flexion gap Was found,and in valgus group a minimummedial over-resection in the flexion gap was found.[Conclusion]The early clinical results with this modified resection method aregood.