WRIGHT MEDICAL TECHNOLOGY INC UNKNOWN INFINITY TIBIAL TRAY; PROSTHESIS, ANKLE, SEMI-CONSTRAINED, CEMENTED, METAL/POLYMER
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Catalog Number UNK_WWA |
Device Problems
Off-Label Use (1494); Osseointegration Problem (3003)
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Patient Problems
Cyst(s) (1800); Inadequate Osseointegration (2646); Insufficient Information (4580)
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Event Date 09/19/2023 |
Event Type
Injury
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Manufacturer Narrative
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The device is not available for evaluation as it remains implanted in the patient.A review of the device history is not possible because the lot number was not communicated.If additional information becomes available, it will be provided on a supplemental report.
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Event Description
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It was reported that the patient underwent a total ankle replacement.Allegedly, the patient may need to undergo a revision surgery.The patient has a size 3 tibial tray and a size four talar dome.This is most likely the mechanism of failure, as that construct is not a design possibility.
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Event Description
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It was reported that the patient underwent a total ankle replacement.Allegedly, the patient may need to undergo a revision surgery.The patient has a size 3 tibial tray and a size four talar dome.This is most likely the mechanism of failure, as that construct is not a design possibility.
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Manufacturer Narrative
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Correction - d1, h6 (clinical signs code, results code and conclusion code).The reported event could be confirmed with review of available ct imaging by a medical professional.Upon further investigation of the ct scans by healthcare professionals the following was observed, ¿the tibia shows some radiolucence and some cysts, indicating loosening.There is no clear migration visible, though." regarding the sizing choices, "the selection of the wrong (too large) size of the talar implant may have contributed to the loosening/failure in this case.However, the first complication and the most likely one to expect would be wear of the poly, but of course also integration problems are likely to occur." based on investigation, the root cause was attributed to a user related issue.The event was caused by the initial treating surgeon choosing a size combination of the tibial tray and talar component that is not recommended and can lead to the complications seen in this particular situation.A review of the device history was not possible because the lot number was not communicated.No corrective actions are required at this time.A review of the labeling did not indicate any abnormalities.Indications of material, manufacturing, or design related problems were unable to be identified as the catalog number and lot number were not communicated.If the device is returned or if any additional information is provided, the investigation will be reassessed.
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