A Hybrid Uniplanar Pedicle Screw System with a New Intermediate Screw for Minimally Invasive Spinal Fixation: A Finite Element Analysis

Figure 3

The T12-L2 finite element model of four uniplanar pedicle screw fixation with two new intermediate screws. The geometry image: (a) the inferior surface of L2 was fixed in all directions. (b) A reference point was created on the superior surface of the T12 vertebra for force and moment application. The meshing image: (c) and (d).