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D4: the remainder of the udi number is unknown because the lot number is not available.Without a product return, no product evaluation is able to be conducted.The lot number is unknown; therefore the device history records are unable to be reviewed.Current information is insufficient to permit a valid conclusion about the cause of this event.If additional information is obtained that adds value to the relevant content of this report and/or a conclusion can be drawn, a follow-up report will be sent.
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It was reported that intra-operatively, when attempting to insert the set screw into the right s1 pedicle screw, cross-threading occurred.The screw was upsized and replaced; however, although the rod and set screw were inserted, the screw came out of the bone.As a result, it was decided not to fix s1 and no screw was placed in the right s1.L3¿s1 fixation was planned, however fixation was completed from l3 to l5.There was a 45 minute delay but no other patient impact.This is report one of three for this event.
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