Bone morphing for optimization of frontal laxity in total knee arthroplasty

摘要

Introduction: The aims of the total knee arthroplasty are to restore accurately the alignment of three components and the lower limb mechanical axis in three dimensions, to maintain the ligaments balance of knee and to avoid the femoropatellar complications, to achieve a pain-free, stable, good functional and long durable prosthesis. Most failure and revision are related to the inaccuracy of the surgical techniques, such as malalignment, ligament imbalance and patella issues. The utilization of computer-assisted Bone Morphing~R system improves the accuracy of alignment and ligament balancing, reduces the femoropatellar complication, to achieve good outcome of TKA. Objective To investigate the frontal laxity of TKA using Bone Morphing system compared with conventional technique. Material and methods: A cohort of 21 primary TKA (Ceraver France) implanted in 21 patients using a Bone Morphing based image-free Ceravision system was investigated. By comparison, the pre-operative, intra-operative and post-operative image data and Ceravision stored outcomes of the lower limb alignment and ligament balancing. We evaluated the range of motion and frontal laxity in three months post operation. In a control group, a cohort of 20 knees underwent TKA using conventional approaches were compared.