(b)(4).Examination of the returned device confirms the reported event of bushing migration.The trend of complaints related to the disassociation of a number of these bushings, in correctly manufactured parts, has led to the initiation of corrective and preventative action.The root cause is attributed to product design.(b)(4) is currently underway to investigate this issue.Post market surveillance is per (b)(4).Depuy considers the investigation closed at this time.Should the additional information be received, the information will be reviewed and the investigation will be re-opened as necessary.Originally submitted on (b)(6) 2016, but did not pass all three acknowledgements, resubmitting due to fda request.
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