MAUDE Adverse Event Report: MEDACTA INTERNATIONAL SA AMISTEM-P; AMISTEM-P STD STEM SIZE 2

Model Number	01.18.402
Medical Device Problem Code	Implant subsidence (4078)
Health Effect - Clinical Code	Pain (1994)
Date of Event	05/20/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Batch review performed on 28 may 2025 (b)(4) items manufactured and released on 01-apr-2021.Expiration date: 2026-03-22.No anomalies found related to the problem.To date, all the 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
The patient had pain due to a subsided stem and the cause is unknown.At about 3 months from primary the surgeon revised the stem and head and the surgery was completed successfully.

• Brand Name: AMISTEM-P
• Common Device Name: AMISTEM-P STD STEM SIZE 2
• 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: 22269520
• Report Number: 3005180920-2025-00549
• Device Sequence Number: 7019629
• Product Code: LPH
• UDI-Device Identifier: 07630040720014
• UDI-Public: 07630040720014
• 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: 2025
• Device Explanted Year: 2025
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Other
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 06/16/2025

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: 03/22/2026
• Device Model Number: 01.18.402
• Device Lot Number: 2101325
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 05/26/2025
• Initial Report FDA Received Date: 06/18/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 04/01/2021
• 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
• Outcome Attributed to Adverse Event: Required Intervention
• Patient Sex: Male