Abstract: Total knee replacement is one of the most effective methods for the treatment of end-stage knee osteoarthritis. At present, the method of mechanical alignment is mainly used in the lower limb alignment of the knee replacement, which can improve the function of the knee joint, but some patients can also produce the postoperative knee joint pain, limited activity and other complications, resulting in poor satisfaction after operation. In recent years, more and more studies have begun to focus on moving mechanics alignment techniques and applied it to clinical practice. The kinematic alignment technique is aimed at the reconstruction of the anatomical structure of patients, keeping the motion axis of the knee joint prosthesis in line with the physiological motion axis of the knee joint, reducing the release of soft tissues and ligaments around the knee joint, and realizing the physiological kinematics of the knee joint. In this paper, the study of the method of dynamic mechanical alignment in total knee arthroplasty is reviewed.

Key words: total knee arthroplasty, kinematic alignment, mechanical alignment, osteotomy, lower extremity force line