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It was reported the screw broke during surgery.The device was not received for evaluation.The event occurred in 2019; however, osteomed did not become aware of this event until (b)(6) 2023.No additional units of the part number/lot number in question remained in inventory for review.A two-year review of the complaint database for the part number 211-20xx part family was performed and revealed two (2) complaints for the issue of "screw broke" ( one of which is the complaint in this report).As stated in the risk documentation and instructions for use (ifu), potential root causes of the reported event could be improper design, very dense bone, not inserting using a taperlock screwdriver, not inserting the screw into the bone at a 90° angle, and not pilot drilling for high density bone, wrong/undersized pilot hole, wrong screw size/length chosen for the application.However, as the device was not received for evaluation, based on the information received, the root cause could not be determined.
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An "adverse event report" was received from the health authority in china.Per the adverse event report, "the patient was diagnosed with an "aneurysm" and underwent aneurysm clipping surgery under general anesthesia on (b)(6) 2019.When using the craniofacial plate fixation system for skull repair, the screw breakage occurred.The screw was immediately removed and replaced with a new one without any abnormalities".It was also reported "no adverse effects on the patient".The event was reported to have occurred in (b)(6) 2019 but had not been reported to osteomed, the screws involved in the incident were not provided for our investigation.No adverse patient consequences were reported.
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