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Figure 7: Entry-target mode of pedicle screw trajectory planning in a patient with grade II L5-S1 spondylolisthesis. (a) Correction of vertebra rotation. (b) Marking of fiducials. (c) Desired trajectory for selected entry and target points and the panel displaying angle of the inserted screw

Figure 7: Entry-target mode of pedicle screw trajectory planning in a patient with grade II L5-S1 spondylolisthesis. (a) Correction of vertebra rotation. (b) Marking of fiducials. (c) Desired trajectory for selected entry and target points and the panel displaying angle of the inserted screw