Application of a Personalized Finite Element Analysis and 3D-Printed Navigation Template in the Treatment of Femoral Neck Fracture with Cannulated Screw

Purpose To investigate the feasibility and accuracy of combining a personalized finite element analysis with 3D-printed navigation template on the treatment of femoral neck fracture (FNF) with cannulated screw. Methods A total of 60 patients as unstable FNT were evolved and randomly divided into two groups. The subjects in the study group were examined using a finite element analysis according to the three-dimensional CT of hip joint before operation and then underwent 3D-printed navigation template of the femur to complete the implantation of cannulated screw, whereas the other 30 patients in the control group were underwent the implantation of cannulated screw using the conventional FNF treatment. Results The biomechanics of three screws were more stable when they were close to the bone cortex (