This report is being resubmitted for an incident that occurred earlier.The device was returned for evaluation.Initial observation shows minor signs of wear to the thread features and bottom contacting surface of the locking caps.This is consistent with inadequate final tightening of the implants.The imaging provided confirmed several caps back-out at the top of the construct, where the rods and locking caps had dissociated from the screws.It is possible that the locking caps were not sufficiently final tightened due to the lack of surface and thread wear, however, the exact cause of the reported issue could not be determined.
|