Skip to main content
Journal of Experimental Orthopaedics
Fig. 3 | Journal of Experimental Orthopaedics

Fig. 3

From: Robotic-assisted total knee arthroplasty improves the rotational mismatch between femoral and tibial components, but not the forgotten joint score 12: a single-center retrospective cohort study

Fig. 3

The postoperative three-dimensional computed tomography image (3DCT) image are shown. a Femoral component rotational angle. Axial 3DCT image of the left femur. The surgical epicondylar axis (SEA) connects the lowest point of the medial epicondyle to the midpoint of the lateral epicondyle. The prosthetic posterior condylar axis (PCA) connects the medial and lateral prosthetic posterior condylar surfaces. The femoral component rotational angle was defined as the angle between the SEA and the PCA. b, C Tibial component rotational angle. Axial 3DCT image of the left tibia. Akagi’s line connects the center of the posterior cruciate ligament and the medial border of the tibial tuberosity. The tibial component rotational angle was defined as the angle between the centerline of the tibial component and Akagi’s line. A positive value represents external rotation, and a negative value represents internal rotation of the femoral and tibial components. The absolute value of the angular divergence of the femoral component relative to the tibial component is defined as the rotational mismatch [27]. E/R; external rotation, I/R; internal rotation

Back to article page