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On (b)(6) 2026, surgery was performed and two s2ai screws were implanted.On (b)(6) 2026, it was found that the two screws implanted on both sides had fractured immediately below the head of the screw shank.On (b)(6) 2026, a revision surgery was performed, however, the fractured screws could not be explanted and are retain within the patient.The surgeon inserted screws into the sai and connected the rods using a competitor's connector.The implants that remained in the patient is made from medical grade tav (astm f136-13) and cocr (astm f1537) which are biocompatible materials.The product is within the anticipated risk; therefore, the overall risk of the system has been maintained and will continue to be monitored.No determinations could be made as to the cause of the reported issue.
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