Medical records received from (b)(6).Patient went through another revision on (b)(6) 2014 for repeated dislocations.After reading the revision operative note the cup and screw were also revised for instability.(b)(4).The devices associated with this report were not returned.Review of the device history records and/or a complaint database search was not possible as the product and lot codes required were not provided.Requests for additional investigational inputs were made in accordance with wi-7915 appendix a.An implant summary record, and not medical records, was provided.The investigation could not verify or identify any product contribution to the reported event with the information provided.Based on the inability to identify root cause, the need for corrective action was not indicated.Depuy considers the investigation closed.Should additional information be received, the information will be reviewed and the investigation will be re-opened as necessary.
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