The primary guide broke during implantation of a rib plate.The guides were installed in compress mode per technique but when the resident drilled a couple of the holes he apparently got off axis.When the screws were then implanted, they did not line up with the slots in the posterior clip of the plate and instead created extra tension against the hook on the primary guide and the guide snapped.This happened with two guides during this surgery.There was a 15 minute delay in surgery time to locate the broken pieces in the patient.
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