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It was reported that, after a left tka surgery performed on (b)(6) 2018, the patient experienced a non-occlusive low echogenicity thrombosis within the popliteal vein on (b)(6) 2018.To treat the condition the patient was administered medication.The condition was reported as resolved with sequelae on (b)(6) 2019.Further details regarding the patient's current health condition and the specific details of the sequelae are currently unknown.
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H3, h6: given the nature of the alleged incident, the devices could not be returned for evaluation.The clinical/medical investigation concluded that, the provided adverse event form documents onset (b)(6) 2018 of the moderately (severe) adverse event #1 as unrelated to the device but definitely related to the procedure which was resolved with sequelae (stop date of (b)(6) 2019).Tourniquet time was noted to be 50 minutes.Post-surgical thrombus formation is a known procedural risk factor/potential complication and does not indicate a component mal-performance or failure.Based on the limited information provided, definitive contributing clinical factors cannot be concluded.The patient impact beyond the post-op thrombosis and subsequent medication therapy cannot be determined.The patient current health status is unknown; however, per the documentation, the event resolved with sequelae.A review of the production orders did not reveal a manufacturing abnormality that could have caused or contributed to the reported incident.A review of complaint history for the part numbers over the past 12 months and for the batch numbers based on historical data of the device did not reveal similar events for the listed devices.A review of the instructions for use documents for knee systems revealed that hematoma, thromboembolic diseases including venous thrombosis, pulmonary embolus, or myocardial infarction, damage to blood vessels have been identified in possible adverse effects section.A review of the risk management files revealed this failure mode was previously identified.The anticipated risk level is still adequate.A historical review concluded that there are no prior actions related to these products and event.At this time, we have no evidence to conclude that the products failed to meet any specifications at the time of manufacture.Factors that could contribute to the reported event include post-operative healing issue and/or patient condition.Based on this investigation, the need for corrective action is not indicated.Should additional information be received, the complaint will be reopened.No further investigation is warranted for this complaint; however, we will continue to monitor for future complaints and investigate as necessary.We consider this investigation closed.
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