Accuracy of CT for measuring femoral neck anteversion in children with developmental dislocation of the hip verified using 3D printing technology

摘要

2D-FNA. a CT image of the femoral head and the femoral neck. The center of the femoral head and the femoral neck is connected to determine the femoral head-neck axis. b It shows the largest layer of the two femoral condyles; the points of A and B are the tangent of the posterior rim of the two condyles. The angle between the femoral head-neck axis and the tangent is 2D-FNA