MAUDE Adverse Event Report: ZIMMER BIOMET, INC. OSS AVL TIBIAL LOCK RING; PROSTHESIS, KNEE

Model Number	N/A
Medical Device Problem Code	Fracture (1260)
Health Effect - Clinical Codes	Fall (1848); Failure of Implant (1924); Pain (1994); Ambulation or Postural Difficulties (2544); Hyperextension (4523); Subluxation (4525); Muscle/Tendon Damage (4532)
Date of Event	12/02/2024
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported the bearing components failed(fractured) after no sign of trauma to the knee.No additional information has been received at this time.
Additional Manufacturer Narrative
(b)(4).Customer has indicated that the product will not be returned to zimmer biomet for investigation, as the device was requested but not returned by the facility.The investigation is in process.Once the investigation has been completed, a follow-up mdr will be submitted additional associated products: 161068 oss avl tib bearing 12mm lot# 416590.161071 oss avl poly tib bushing set lot# 65904789.150510 oss poly bumper lock pin lot# 65713123.
Additional Manufacturer Narrative
This follow-up report is being submitted to relay additional information.The investigation is in process.Once the investigation has been completed, a follow-up mdr will be submitted.Additional associated products: (b)(6) oss avl tib bearing 12mm lot# 416590.(b)(6) oss avl poly tib bushing set lot# 65904789.(b)(6) oss poly bumper lock pin lot# 65713123.(b)(6) oss rs axle lot# 66008365.(b)(6) oss avl yoke 12mm lot# 663900.(b)(6) oss rs poly fem bushings set/2 lot# 66257611.
Event or Problem Description
It was reported that a patient underwent a left total knee revision.Three months postop, the patient reported falling and ruptured the medial retinacular and underwent an irrigation and debridement to ensure there was no infection and the capsule was not damaged.No implants were exchanged.Six months after the fall, the patient reports she woke up and hyperextended her knee resulting in pain and the inability to bear weight.X-ray images showed metal fragments from the locking ring and poly fragments in the joint.The patient was revised one month later in which the metal and poly hinge mechanisms were replaced.
Additional Manufacturer Narrative
This follow-up report is being submitted to relay additional information.The following sections were updated/corrected updated: b4, b5, g3, g6, h1, h2, h3, h6, h10, h11.Visual examination of the provided pictures identified the explanted tibial bushing, poly lock pin and avl locking ring are found fractured.As the devices were not returned, further evaluations could not be performed.Review of the device history records identified no deviations or anomalies during manufacturing related to the reported event.Insufficient information provided to perform a compatibility check.Medical records were provided and reviewed by a health care professional.Review of the available records identified the following: for notes: patient states she woke up and the knee hyperextended and was accompanied with significant pain and was unable to bear weight.Seen in the er the next day, ct showed a metal fragment next to the lateral tibia of the left knee.Patient was placed in an immobilizer.Radiographs show failure of internal hinge mechanism radiographs were provided and reviewed by a health care professional.Review of the available records identified the following: implant fit is maintained.There is mild lateral patellar tilt and subluxation.Bone quality is osteopenic.There are contour deformities of the tibial implant as marked on the images for which comparison with earlier images would be necessary to determine early implant disassembly and failure.Complaint is confirmed with the provided pictures and medical records.A definitive root cause cannot be determined.No corrective actions, preventive actions, or field actions resulted after investigation of this event.
Event or Problem Description
No further event information available at the time of this report.

• Brand Name: OSS AVL TIBIAL LOCK RING
• Common Device Name: PROSTHESIS, KNEE
• Manufacturer (Section D): ZIMMER BIOMET, INC.; 56 e. bell drive; p.o. box 587; warsaw IN 46581
• Manufacturer (Section G): ZIMMER BIOMET, INC.; 56 e. bell drive; p.o. box 587; warsaw IN 46581
• Manufacturer Contact: jennifer rapsavage ; 56 e. bell dr.; warsaw, IN 46582 ; 5745260384
• MDR Report Key: 21035705
• Report Number: 0001825034-2024-03064
• Device Sequence Number: 7631160
• Product Code: JDI
• UDI-Device Identifier: 00880304456181
• UDI-Public: (01)00880304456181(17)310519(10)839670
• Combination Product (Y/N): N
• Initial Reporter State: TX
• Initial Reporter Country: US
• PMA/510(K) Number: K051570
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2024
• Device Explanted Year: 2024
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional,Distributor
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 05/28/2025

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: N/A
• Device Catalogue Number: 161073
• Device Lot Number: 839670
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 12/03/2024
• Supplement Date Received by Manufacturer: 01/08/2025; 05/22/2025
• Initial Report FDA Received Date: 12/30/2024
• Supplement Report FDA Received Date: 02/05/2025; 05/28/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 05/19/2021
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: SEE H11 NARRATIVE.
• Outcome Attributed to Adverse Event: Hospitalization; Required Intervention
• Patient Sex: Female