Zimmer biomet complaint number: (b)(4).Concomitant medical products: vanguard posterior stabilized tibial bearing, catalog #: ep-183660, lot #: 915390, biomet cruciate tibial tray, catalog #: 141235, lot #: j3687182, arcom series-a standard patella, catalog #: 184764, lot #: 494670, unknown palacos bone cement, catalog #: unknown, lot #: unknown.Complaint sample was evaluated and the reported event was confirmed.Visual inspection of returned tibial tray and femur identified little to no cement fixation on the posterior side of the implants.The patellar component also shows no signs of cement fixation and one of the pegs appears to have been cut off.The peg was likely cut off during explanation.The tibial bearing has some small nicks and gouges on the superior surface.Dhr was reviewed and no discrepancies were found.A definitive root cause of the loosening cannot be determined 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.Multiple mdr reports were filed for this event, please see associated reports: 0001825034 - 2018 - 09935, 0001825034 - 2018 - 02353 - 3, 0001825034 - 2018 - 02354 - 3.
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