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Manufacturing site evaluation: the device was not returned to the manufacturer for physical evaluation.Additionally, no on-site evaluation of the unit was performed and no parts were returned for failure analysis.Therefore, the investigation was not able to confirm a device issue that could be associated with the reported event.The device history records (dhr) were reviewed for all available lot numbers; the devices were found to be within specification at the time of production.All device history records (dhr) are reviewed and released according to documented procedures and a device is not released if it does not meet requirements or is nonconforming.A definitive conclusion regarding the complaint incident cannot be reached without a physical examination of the complaint device.
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It was reported to aesculap inc.That an vega knee implant system, comprised of the following components, vega system ps femur f5n r (part #nx031z) (ref.Associated mdr id 2916714-2020-00550), vega system patella 3-peg size p2 (part # nx042) (ref.Associated mdr id 2916714-2020-00551), vega system ps tibia plateau t1, cemented implant (part # nx051z) (ref.Associated mdr id 2916714-2020-00552), vega system ps gliding surface implant 14mm t1/t1+ (part # nx112) (ref.Associated mdr id 2916714-2020-00553), and a vega system peek plug t1-t5 (part # nn260p), was implanted during a primary surgery performed on (b)(6) 2013.According to the complainant, following the primary surgery, the patient experienced pain and swelling in both knees, which restricted routine daily activities.The patient underwent a revision surgery performed on (b)(6) 2016.Intraoperative findings during replacement surgery revealed loosening of the tibial and femoral components.The cement used during the primary surgery is unknown.No known adverse patient effects occurred as a result of the revision surgery.The complaint device is not available to be returned to the manufacturer for evaluation.Additional information has been requested, but has not been made available.The adverse event / malfunction is filed under aag reference (b)(4).Involved components: nx031z - as vega ps femoral comp.Cemented f5n r - lot # 51837869, nx042 - patella 3-pegs p2 - lot # 51848892, nx051z - as vega ps tibial plateau cemented t1 - lot # 51867614, nx112 - vega ps gliding surface t1/1+ 14mm - lot # unknown, nn260p - plug f/tibial plateau - lot # 51878787.
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