PMC4674154_01
The intact model: sectioned in the coronal (A), transverse (B), and sagittal planes(C)), with loading and boundary conditions.. The disc showing the inclination of the fibers (part D).
pone.0144637.g001.jpg
PMC4674154_01_pone.0144637.g001.jpg
pone.0144637.g001
The lumbosacral spine and the components were presented in Fig 1.
Transforaminal lumbar interbody fusion model.. (A) L4-5 right side facetectomy, (B) PEEK cage and bone graft was placed after partial discectomy.
pone.0144637.g002.jpg
PMC4674154_01_pone.0144637.g002.jpg
pone.0144637.g002
One polyetheretherketone cage filled with bone graft was placed in the disc (Fig 2).
Finite element model of fixation modes.. Five finite element models with L3-S1 after right sided TLIF. UP, unilateral pedicle screw-plate fixation; UR, unilateral pedicle screw-rod fixation; BP, bilateral pedicle screw-plate fixation; BR, bilateral pedicle screw-rod fixation; UP+UR, unilateral pedicle screw-plate supplemented with pedicle screw-rod fixation.
pone.0144637.g003.jpg
PMC4674154_01_pone.0144637.g003.jpg
pone.0144637.g003
TLIF model (Fig 3): unilateral pedicle screw-plate fixation (UP), unilateral pedicle screw-rod fixation (UR), bilateral pedicle screw-plate fixation (BP), bilateral pedicle screw-rod fixation (BR), pedicle screw-plate supplemented with pedicle screw-rod fixation (UP+UR).