The returned probe was evaluated.A section approximately 30mm in length has fractured off the tip.There is also significant material displacement found 10-20mm from the fracture site.The fracture may have been caused by dense bone quality of the patient, off-axis use of the probe, or attempting to alter the trajectory of the probe within the vertebrae.The material displacement on the shaft of the probe most likely occurred due to contact with another hard, metallic material- possibly another instrument in the kit or an adjacent screw in the vertebrae.A review of the manufacturing records did not identify any issues which would have contributed to this event.
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