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This report is being submitted pursuant to the provisions of 21 cfr, part 803 (and/or part 4, as applicable).This report may be based on information which has not been investigated or verified prior to the required reporting date.This report does not reflect a conclusion by depuy synthes, or its employees that the report constitutes an admission that the product, depuy synthes, or its employees caused or contributed to the potential event described in this report.If information is obtained that was not available for the initial report, a follow-up report will be filed as appropriate.
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It was reported that on (b)(6) 2025, the patient underwent tka surgery on knee with the product in question.The insert did not go in properly when it was hammered in, so it was removed using the elevatorium and deformation of the product in question was confirmed when it was hammered in again.It is possible that the insert was hammered in at a slightly different angle the first time, but it is not clear whether the deformation occurred when the insert was hammered in or removed.Since deformation was confirmed, it was not used and another insert was implanted.The surgery was completed successfully with no surgical delay.
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Product complaint # (b)(4) investigation summary it was reported that on nov.19, 2025, the patient underwent tka surgery on knee with the product in question.The insert did not go in properly when it was hammered in, so it was removed using the elevatorium and deformation of the product in question was confirmed when it was hammered in again.It is possible that the insert was hammered in at a slightly different angle the first time, but it is not clear whether the deformation occurred when the insert was hammered in or removed.Since deformation was confirmed, it was not used and another insert was implanted.The surgery was completed successfully with no surgical delay.No further information is available.¿the product was not returned to depuy synthes; however, photos were provided for review.See attachment "photo_(b)(4) jo202510419, (b)(6).The photo investigation revealed that the atune cr lt ms ins sz 5 5 shows the tab of the locking mechanism deformed and signs of implantation attempts.The reported functionality issue could not be assessed based on the photo provided, however, due to the visual damage observed, the difficulty/inability to assemble mating devices can be confirmed.As per attune¿ revision knee system fixed bearing surgical technique rev.D, on page 213, the next steps need to be follow for a proper implantation of the attune ps/cr insert with the revision fixed bearing tibial base: "angle the tibial insert posteriorly and slide the posterior tabs into the posterior undercuts of the tibial base.The fixed bearing tibial insert is impacted into place on the tibial base, using the fixed bearing insert impactor.Position the impactor at approximately 60 degrees on the insert so that the notch rests on the anterior edge of the center of the insert.Use a mallet to strike the fixed bearing insert impactor".As the device was not returned, and as-received condition could not be assessed, a dimensional inspection and document/specification review were not completed.The overall complaint was confirmed as the observed condition of the atune cr lt ms ins sz 5 5 would contribute to the complained device issue.Based on the investigation findings, it has been determined that no corrective and/or preventative action is proposed.There is no indication that a design or manufacturing issue has caused the reported complaint condition.As part of depuy synthes quality process, all devices are manufactured, inspected, and released to approved specifications.Additional monitoring for any potential safety signals will be conducted through complaint trending and other post-market safety surveillance activities.Device history lot a manufacturing record evaluation was performed for the finished device m8819n number, and no non-conformances / manufacturing irregularities were identified during manufacturing.Corrected: d4 (primary udi).
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