Medtronic received information regarding a navigation device being used intra/peri-operatively of a cervical spine procedure.It was noted by the representative that this event was not due to an alleged product issue, but the report was made just in case.A follow-up will be conducted to confirm this event.It was reported that imaging system and navigation were used along with the articulating arm and a tracker.When performing an insertion of ps on the right side of c4, it was confirmed by navigation that the screw was inserted without any problems.However, when confirming with the imaging system after the insertion, it was suspected that the screw deviated to the lateral side and caudal side.Va got an injury, and it was unknown if there were symptoms occurred to the root of c5.Revision of the screw was required and the screw was removed and used at another position after removal.The posterior fusion procedure of the c2-th1.Both imaging and navigation systems were used.The reference was set in the c2, insertion was made in order from the top.After the c5 screw was inserted, the frame moved and was re-shot in the middle of inserting left c5 screw.At the moment, the pedicle screw of the right c4 was confirmed to deviate toward outside and caudal side.The screw was removed and skipped.There was no bleeding, but injury might occur to vertebral artery or nerve root.The use of navigation was continued without problem after c5.The patient impact is not known.
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