Fixation range: th2/th9 it was reported that patient underwent posterior decompression and fusion due to ossification of posterior longitudinal ligament (opll).Intra-op, the tip of the straight probe being used in the procedure broke.The fragment of the broken probe remained inside the patient which was confirmed at the right side of l4 by x-ray images.The doctor tried in vain to remove the screw.At that time, the screw may have been pushed forward.Mri revealed that the tip of the probe was in capsula cordis and its posterior portion remained in vertebral body.The fragment remaining inside the patient is planned to be removed on a later date.There was no health damage caused to the patient.As the patient was originally scheduled to be treated by anterior approach at proper intervals, there was no particular problem that raised as a result of this event.
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