(b)(4).Concomitant medical products: tibial augment cemented half block right medial size ef 5 mm thickness catalog # 42555805405 lot # 64925185, tibial augment cemented half block right lateral size ef 5 mm thickness catalog # 42555805205 lot # 64661878, stem extension 3mm offset splined uncemented 15 mm diameter +135 mm length catalog # 42560313515 lot # 64716457, tibial central cone size x-small catalog # 42545000510 lot # 64910599, articular surface fixed bearing constrained posterior stabilized (cps) right 14 mm height use with tibia sizes e-f / ps femur sizes 10-11 catalog # 42522600814 lot # 64251352.Customer has indicated that the product will not be returned because requested but not returned by hospital.Once the investigation has been completed, a follow-up mdr will be submitted. .
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This follow-up report is being submitted to relay additional information.Reported event was unable to be confirmed due to limited information received from the customer.Device was not returned.Visual evaluation of the device pictures shows signs of use.Device history record (dhr) was reviewed and no discrepancies relevant to the reported event were found.A definitive root cause cannot be determined.Radiographs review indicates there is possible sign of early loosening, however, no migration nor internal rotation of the tibial component.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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