Neither the device nor films of applicable imaging studies were returned to the manufacturer for evaluation.Therefore, we are unable to determine the definitive cause of the reported event.If information is provided in the future, a supplemental report will be issued.
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It was reported that the patient presented with lumbar canal stenosis.She underwent combined anterior-posterior fixation at l3-l5, oblique lumbar interbody fusion at l3-l4 and l4-l5, right/left percutaneous pedicle screw fixation at l3-l5 in decubitus position and l3-l4 compression.Navigation and fluoroscopy was used in this procedure.Compression procedure was being performed from the left side to the right side.During the compression procedure, the intervertebral disc space was found a little narrow; therefore, it was lifted up a little with the trial.After that, the screw was inserted.When compression was applied to the alleged intervertebral disc space, tip of the screw at l3 on the right moved to the cranial side inside the vertebral body around the pedicle as a result of compression on the right side.In the view of sales rep, the compression had been heavily loaded.The procedure was delayed by less than 60 minutes as a result of this event.There is no plan to explant the deviated screw.It is unknown if there were any patient complications as a result of this event.
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