MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH MRH KNEE FEM M LFT; PROSTHESIS, KNEE, FEMOROTIBIAL, CONSTRAINED, CEMENTED, METAL/POLYMER

Model Number	6481-1-120
Medical Device Problem Codes	Fracture (1260); Detachment of Device or Device Component (2907)
Health Effect - Clinical Code	Bone Fracture(s) (1870)
Date of Event	04/13/2023
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Reported event: an event regarding crack/fracture and disassociation involving a mrh femoral component was reported.The event was not confirmed.Method & results: product evaluation and results: material analysis, visual, functional and dimensional inspections could not be performed as the device was not returned.Clinician review: no medical records were received for review with a clinical consultant.Product history review: review of the device history records indicate devices were manufactured and accepted into final stock with no relevant reported discrepancies.Complaint history review: there have been no other similar events for the lot referenced.Conclusions: it was reported that the patient was revised due to distal femur fracture and disassociation of the stem from the femoral component.Fracture of the stem and/or femoral component at the mating threads was also reported.The exact cause of the event could not be determined because insufficient information was provided.Further information such as return of the device, pathology reports, pre- and post-operative x-rays and the revision operative report as well as patient history and follow-up notes are needed to complete the investigation for determining root cause.No further investigation for this event is possible at this time.If devices and/or additional information become available to indicate further evaluation is warranted, this record will be reopened.Device not returned to the manufacturer.
Event or Problem Description
Patient was revised due to a fractured distal femur and the femoral component stem was disassociated from the body of the femoral component due to it breaking through the threads of the stem.

• Brand Name: MRH KNEE FEM M LFT
• Common Device Name: PROSTHESIS, KNEE, FEMOROTIBIAL, CONSTRAINED, CEMENTED, METAL/POLYMER
• Manufacturer (Section D): STRYKER ORTHOPAEDICS-MAHWAH; 325 corporate drive; mahwah NJ 07430
• Manufacturer (Section G): STRYKER ORTHOPAEDICS-LIMERICK; raheen business park; limerick NA ; EI NA
• Manufacturer Contact: arokiya raj ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 16874355
• Report Number: 0002249697-2023-00482
• Device Sequence Number: 17964698
• Product Code: KRO
• UDI-Device Identifier: 07613327045154
• UDI-Public: 07613327045154
• Combination Product (Y/N): N
• Initial Reporter State: MN
• Initial Reporter Country: US
• PMA/510(K) Number: K002552
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2020
• Device Explanted Year: 2023
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 05/05/2023

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?: No
• Operator of Device: Health Professional
• Device Expiration Date: 03/31/2025
• Device Model Number: 6481-1-120
• Device Catalogue Number: 64811120
• Device Lot Number: JNJ7Y
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 04/13/2023
• Initial Report FDA Received Date: 05/05/2023
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 03/07/2020
• 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
• Outcome Attributed to Adverse Event: Hospitalization; Required Intervention
• Patient Age: 71 YR
• Patient Sex: Female
• Patient Weight: 103 KG