PMC3835198_01
Plain films showing initial placement of total disc replacement.
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fig1
TDR at the L5/S1 disc space was performed as an elective procedure (Figure 1).
Plain radiograph showing a dislocated polyethylene inlay, but no pedicle fracture is seen.
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fig2
An emergency plain film X-ray identified an anterior dislocation of the polymer disc component (Figure 2).
Axial view of bilateral L5 pedicle fracture.
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fig3
A CT scan demonstrated the dislocated polymer disc abutting the left common iliac vein (but not the right common iliac vessels) with a small amount of inflammatory reaction and bilateral pars fractures with a grade 1 spondylolisthesis (Figures 3 and 4).
Sagittal view of L5 pedicle fracture.
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fig4
A CT scan demonstrated the dislocated polymer disc abutting the left common iliac vein (but not the right common iliac vessels) with a small amount of inflammatory reaction and bilateral pars fractures with a grade 1 spondylolisthesis (Figures 3 and 4).
Anterior fusion of L5/S1 with intervertebral cage and bone graft.
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fig5
The interbody fusion cage was packed with artificial bone substituted securely and fixed with two titanium locking screws passed through preformed screw holes into the vertebral endplates (Figure 5).
Bilateral lumbar fixation screws in the L5 vertebra.
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fig6
The percutaneous lumbar fixation screw used in this case (Figures 6, 7, and 8) is generally more robust than other small fragment screws.
Sagittal view of right lumbar fixation screw in situ.
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fig7
The percutaneous lumbar fixation screw used in this case (Figures 6, 7, and 8) is generally more robust than other small fragment screws.
Sagittal view of left lumbar fixation screw in situ.
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fig8
The percutaneous lumbar fixation screw used in this case (Figures 6, 7, and 8) is generally more robust than other small fragment screws.