Meta-analysis of limb and prosthesis alignment restoration after navigated total knee arthroplasty versus conventional total knee arthroplasty / 中国组织工程研究

ABSTRACT

BACKGROUND:Computer-assisted navigation technique has been widely applied in total knee arthroplasty. However, whether computer-assisted navigation total knee arthroplasty is better than traditional total knee arthroplasty remains unclear. OBJECTIVE:To systemical y evaluate and compare the limb and prosthesis alignment restoration post computer-assisted navigation and traditional total knee arthroplasty. METHODS:The PubMed/Medline, EMBASE, Cochrane CENTRAL, ScienceDirect database were searched from established to June 2013 and the randomized control ed trials about computer-assisted navigation and traditional total knee arthroplasty were selected. Meta analysis was performed with Rev Man 5.2 software. The evaluating data included the hip-knee-ankle mechanical axis or tibiofemoral angle, femoral prosthesis coronal angle, femoral prosthesis sagittal angle, tibial prosthesis coronal angle, and tibial prosthesis sagittal angle. The malalignment was defined as a deviation 2° or 3° from the natural line. RESULTS AND CONCLUSION:19 randomized control ed trials involving 2 654 cases (3 392 knees) were included in this study. Meta-analysis showed that, the limb alignment restoration post computer-assisted navigation was significantly better than traditional total knee arthroplasty (3°, P<0.000 01 and 2°, P=0.000 8). The 3° of femoral prosthesis coronal angle deviation post computer-assisted navigation was significantly superior to traditional total knee arthroplasty (P=0.002), while the 2° deviation had no significant difference between the two surgeries (P=0.290). The 3° deviation of femoral prosthesis sagittal angle post computer-assisted navigation was significantly better than traditional total knee arthroplasty (P=0.040);however, the 2° deviation had no significant difference between the two surgeries (P=0.950). 3° and 2°tibial prosthesis coronal angle deviation post computer-assisted navigation was significantly superior to traditional total knee arthroplasty (3°, P=0.030);the 2° deviation had no significant difference between the two surgeries (P=0.260). Computer-assisted navigation has better limb alignment, femoral and tibial prosthesis alignment 3° deviation than the traditional total knee arthroplasty, but the 2° deviation of femoral prosthesis coronal angle, femoral prosthesis sagittal angle, and tibial prosthesis sagittal angle had no significant difference between the two surgeries.