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| Model Number |
LOGIC FEMORAL PS CEM RIGHT SZ 1 |
| Medical Device Problem Codes |
Unstable (1667); Loosening of Implant Not Related to Bone-Ingrowth (4002)
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| Health Effect - Clinical Codes |
Pain (1994); Joint Laxity (4526)
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| Date of Event |
01/04/2024
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Type of Reportable Event
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Serious Injury
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Additional Manufacturer Narrative
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D2b: prosthesis, knee, patellofemorotibial, semi-constrained, cemented, polymer/metal/polymer additional information, including the product investigation, will be submitted within 30 days of receipt.
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Event or Problem Description
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It was reported that a 70 yo female patient, initial right knee implanted on (b)(6) 2015, underwent a revision procedure on (b)(4) 2024, approximately 8 years 2 months post the initial procedure.The patient complained of pain and instability.The femur appeared grossly loose on x-ray per the surgeon.The patient was revised to a 02-010-06-0310 logic cc femoral size 1 right a244027, 02-010-06-0511 logic post.Aug.Block size 1 5mm 6811390, 02-012-60-1480 logic stem ext 14mm x 80mm 6613674, 02-012-61-2000 logic offset stem ext coupler 2mm a299460, 02-022-44-1009 truliant tib imp psc insert sz 1 9mm m000273, and a 208-05-01 cc distal fem augment sz 1 5mm 7028916.There were no device breakages or surgical delays during the procedure.X-rays were provided.The patient was last known to be in stable condition following the event.No device returns for analysis available due to the hospital policy.No further information.
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Additional Manufacturer Narrative
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H3: the revision reported was likely the result of an insufficient bond between the femoral component and bone which led to aseptic (non-infected) femoral loosening and pain after 8 years of implantation.However, potential contributions from osteolysis, prosthesis wear, and/or patient-related conditions to the reported event cannot be confirmed as the devices were not available for evaluation and limited information was provided.The most probable root cause for the reported event of "loosening - femoral" is associated with weakened integration of the femoral component at the bone-implant interface due to loss of fibrous and/or bony tissue and leading to compromised anchorage of the device.
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Additional Manufacturer Narrative
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This follow-up report is being submitted to relay additional and/or corrected information.The following sections were updated/corrected: d1, h4, h6.Mdr section codes updated/corrected: a, c, d, e, g.The revision reported was likely the result of femoral loosening.Failure of the cement used to secure the femoral component to the femoral bone may have led to loosening at the cement-implant and/or cement-bone interface.Instability may be the result of increased soft-tissue laxity (looseness), inadequate flexion of the implants, or improper positioning or alignment of the prosthesis, or a result of the femoral loosening.However, this cannot be confirmed from the provided radiographs, and no images of the explanted device were provided.If any further information is obtained that would change or alter any information provided, a supplemental report will be filed accordingly.
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Search Alerts/Recalls
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