(b)(4).Concomitant medical products: 00630505036 liner standard 3.5 mm offset 36 mm i.D.62328404, 00801803602 femoral head sterile product 62378517, 00771101020 femoral stem 12/14 neck taper plasma sprayed 62302391, 00625006530 bone scr 6.5x30 self-tap 62318802.Customer has indicated that the product will not be returned to zimmer biomet for investigation.The investigation is in process.Once the investigation has been completed, a follow-up mdr will be submitted.Multiple mdr reports were filed for this event, please see associated reports: 0002648920 - 2019 - 00777 head, 0001822565 - 2019 - 04622 stem, 0002648920 - 2019 - 00778 screw.
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It was reported that the patient underwent a revision surgery four years post initial tha due to a loose acetabular component.During the surgery, it was discovered that there were indications of corrosion on the head and stem.Attempts were made to obtain additional information; however, none was available.
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(b)(4).This follow-up report is being submitted to relay additional information.Reported event was confirmed by review of medical records.Device history record (dhr) was reviewed and no discrepancies were found.Root cause was unable to be determined.Initial op notes demonstrated that the patient had right tha due to degenerative joint disease.No complications and only one screw was installed.Revision op notes demonstrated that the patient was revised due to cup loosening and subsidence with bone loss.During the revision, milky turbid fluid in the joint, the cup rotated 90 degrees from its ideal location.Stem well fixed.Corrosion on the trunnion.Broken screws in the acetabulum.Necrotic tissue.If any further information is found which would change or alter any conclusions or information, a supplemental will be filed accordingly.Zimmer biomet will continue to monitor for trends.
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