MAUDE Adverse Event Report: MEDACTA INTERNATIONAL SA AMISTEM-P; STEM: AMISTEM-P STD. SIZE 6

Model Number	01.18.406
Medical Device Problem Code	Failure to Osseointegrate (1863)
Health Effect - Clinical Code	Inadequate Osseointegration (2646)
Date of Event	03/26/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Batch review performed on 01-apr-2025.Lot 179941: (b)(4) items manufactured and released on 22-may-2018.Expiration date: 10-may-2023.No anomalies found related to the problem.To date, all items of the same lot have been sold with no similar reported event during the period of review.Root cause: based on the information available no definitive root cause can be established, while there is no indication that any potential issue with the device may have caused or contributed to the event, and the device history record review does not indicate any potential manufacturing related issue.
Event or Problem Description
At about 6 years and 4 months after primary, the patient came in reporting pain due to a loose stem and the cause is unknown.The surgeon revised the medacta stem and head with competitor components and revised the medacta liner with a medacta liner.The surgery was completed successfully.

• Brand Name: AMISTEM-P
• Common Device Name: STEM: AMISTEM-P STD. SIZE 6
• Manufacturer (Section D): MEDACTA INTERNATIONAL SA; strada regina; castel san pietro, switzerland 6874 ; SZ 6874
• Manufacturer (Section G): MEDACTA INTERNATIONAL SA; strada regina; castel san pietro, switzerland 6874 ; SZ 6874
• Manufacturer Contact: marco giannessi ; strada regina; castel san pietro, switzerland 6874 ; SZ 6874
• MDR Report Key: 21898243
• Report Number: 3005180920-2025-00317
• Device Sequence Number: 20901120
• Product Code: LPH
• UDI-Device Identifier: 07630040720052
• UDI-Public: 07630040720052
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: K173794
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2018
• Device Explanted Year: 2025
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 04/24/2025

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?: No
• Operator of Device: Health Professional
• Device Expiration Date: 05/10/2023
• Device Model Number: 01.18.406
• Device Lot Number: 179941
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 03/26/2025
• Initial Report FDA Received Date: 04/24/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 05/22/2018
• Is the Device Labeled for Single Use? (Y/N): Yes
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Required Intervention
• Patient Sex: Unknown