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This follow-up report is being submitted to relay corrected and additional information.Event description: it was reported that the patient underwent an initial right tha on (b)(6) 2012.Patient was revised on (b)(6) 2020 due to in-vivo corrosion, dislocation, altr, elevated metal ion levels, and pseudotumor.Subsequently, the patient experienced a dislocation on (b)(6) 2020 and again on (b)(6) 2020.Review of received data: due diligence: no further due diligence required as all required information to support the conclusion is available or was already requested.Medical records were provided and reviewed by a health care professional.Review of the available records identified the following: the patient underwent an initial right total hip arthroplasty procedure on (b)(6) 2012 due to degenerative arthritis.Zimmer biomet products were implanted without complications.The patient underwent a revision procedure on (b)(6) 2020 due to corrosion, dislocation, altr, elevated metal ions, and pseudotumor.During the revision procedure, the head and liner were replaced.The patient experienced a dislocation on (b)(6) 2020 and underwent a closed reduction.The patient dislocated again on (b)(6) 2020 and underwent another closed reduction with the placement of a knee immobilizer.X-rays did not identify any fractures.No other findings/complications related to the event were noted.Product evaluation: the product remains implanted; therefore, visual and dimensional evaluation could not be performed.Review of product documentation: device purpose: this device is intended for treatment.Product compatibility: the compatibility check was performed from www.Productcompatibility.Zimmer.Com and showed that the product combination was approved by zimmer biomet.Dhr review: review of the device history records identified no deviations or anomalies during manufacturing.Conclusion: it was reported that the patient underwent an initial right tha on (b)(6) 2012.Patient was revised on (b)(6) 2020 due to in-vivo corrosion, dislocation, altr, elevated metal ion levels, and pseudotumor.Subsequently, the patient experienced a dislocation on (b)(6) 2020 and again on (b)(6) 2020.The quality records show that all specified characteristics have met the specifications valid at the time of production.Therefore, the investigation did not identify a nonconformance or a complaint out of box (coob).The biolox head remains implanted.Review of the device history record identified no deviations or anomalies during manufacturing related to the reported event.Review of complaint history found no additional related issues for this item and the reported part and lot combination.Based on the medical records obtained, the dislocations can be confirmed.Nevertheless, due to the lack of radiographs, no assessment of the hip biomechanics could be made.Therefore, the cause of the dislocations remains unknown.The need for corrective measures is not indicated and zimmer switzerland manufacturing gmbh considers this case as closed.Zimmer biomet¿s reference number of this file is (b)(4).
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