Patient was revised due to undersized stem and loosening.Examination of the reported device was not possible as it was not returned.A search of the complaints databases finds no other related reports against the product and lot code combination since its release to distribution.Review of device history records finds no related manufacturing deviations or anomalies that would have contributed to the reported event.The investigation can draw no conclusion with the information provided.Based on the inability to determine root cause, the need for corrective action has not been indicated.Depuy considers the investigation closed at this time.Should additional information be received, the information will be reviewed and the investigation will be re-opened as necessary.
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