The four locking caps, four screw heads, and two rods were returned for evaluation.Initial observation shows surface markings and deformation on the threads and bottom surface of the locking caps which is consistent with tightening onto a rod.The locking cap did not thread smoothly into one of the returned screw heads, which is expected from wear observed on the screw head threads.The imaging provided shows four loose locking caps.No determinations could be made as to the cause of the reported issue.
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