Fig. 2From: Biomechanical evaluation of the hybrid pedicle screw—cortical bone trajectory technique in transforaminal lumbar interbody fusion to adjacent segment degeneration—finite element analysisFE models of L1-S1 lumbar spine with TLIF at L4-L5 segment with four different fixation techniques. (A) PS at L4 and L5 (PS-PS); (B) CBT at L4 and L5 (CBT-CBT); (C) PS at L4 and CBT at L5 (PS-CBT); (D) CBT at L4 and PS at L5 (CBT-PS).Back to article page