Biomechanics of artificial pedicle fixation in a 3D-printed prosthesis after total en bloc spondylectomy: a finite element analysis

摘要

Different 3D models. a, b Intact model of T10–L2 including major ligaments. c Structure of the IVD. d Model of the 3D-printed prosthesis with artificial pedicle structure. e, f Model A: 3D-printed prosthesis with long-segment posterior fixation (T10/11 and L1/2). g, h Model B: Model A + two artificial pedicle fixation screws