The instrument was not returned for evaluation as it was retained by the hospital.It's possible the reported tip breakage could be impacted by variations in insertion trajectory.If a large enough force to bend the needle occurs, the force could be great enough to lead to fracture.However, the exact cause of the reported issue cannot be determined.
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During a single level l5-s1, mis tlif, the needle was being used to place a k-wire at l5, on the patient's left.Once the wire was placed, the surgeon attempted to remove the outer portion of the needle and realized that the needle was stuck.X-ray revealed the needle was significantly bent.Upon subsequent attempts to removed the needle sheath, the distal tip broke off in the pedicle.After several more unsuccessful attempts to remove, the surgeon made the decision to leave the broken tip in the pedicle.The remaining screws were placed, including at l5, and the rest of the procedure was completed without incident.
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