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It was reported patient underwent a revision procedure one year post implantation due to pain, tightness with range of motion, and possible loosening on imaging.Operative report notes no component loosening found.Tibial prosthesis was replaced.Attempts to obtain additional information have been made; however, no more is available.
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This follow-up report is being submitted to relay additional information.The following sections were updated: b4, b5, g3, g6, h1, h2, h3, h6, h10 reported event was unable to be confirmed due to limited information received from the customer.Device was not returned.Device history record (dhr) was reviewed and no discrepancies relevant to the reported event were found.A definitive root cause cannot be determined.Medical records review indicates that patient present with pain, preop bone scan suggest possible loosening; during revision, no loosening found, no intraop complications, negative for acute inflammation and infection.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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