Fig. 4From: Accuracy and safety of robot-assisted cortical bone trajectory screw placement: a comparison of robot-assisted technique with fluoroscopy-assisted approachA Preoperative X-ray of patient; B Preoperative CT showed L4/5 spondylolisthesis facet joints hyperplasia and degeneration, MRI showed L4/5 spinal stenosis. C Robot-assisted intraoperative positioning and intraoperative fluoroscopyBack to article page