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It was reported that revision surgery was performed due to loosening.The affected r3 articular liner, used in treatment, was not returned for evaluation.Therefore a product analysis could not be performed.Our investigation including a review of the manufacturing records for the listed batch did not reveal any deviation from the standard manufacturing processes.A review of the complaint history for the listed part revealed no prior complaints for the listed failure mode with the same batch number.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.A relationship, if any, between the device and the reported incident could not be corroborated.No relevant supporting documentation was provided, therefore a thorough medical investigation could not be performed.The reported failure has been noted on the instructions for use and on the risk management files.Based on this investigation, the need for corrective action is not indicated.Some potential causes could include but are not limited to traumatic injury, fit/sizing, abnormal motion over time or patient medical history.No further investigation is warranted for this complaint; however we will continue to monitor for future complaints and investigate as necessary.We consider this investigation closed.
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