CT-Free-Based-Navigation Systems

The success of total knee replacement surgery depends on several factors, including proper patient selection, appropriate implant design, correct surgical technique, and effective peri-operative care. The outcome of total knee replacement surgery is particularly sensitive to variations in surgical technique [1, 2, 8, 12, 13, 16–19, 35, 43, 45]. Incorrect positioning or orientation of implants and improper alignment of the limb can lead to accelerated implant wear and loosening and sub-optimal functional performance. A number of studies have suggested that alignment errors of greater than three degrees are associated with more rapid failure and less satisfactory functional results of total knee arthroplasties [2, 3, 8, 9,11,14, 20, 24, 27, 30, 31, 36–38, 44,46].