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

Model Number	01.18.402
Medical Device Problem Code	Device Appears to Trigger Rejection (1524)
Health Effect - Clinical Code	Medical device site infection (4845)
Date of Event	03/14/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
At 5 years 8 months from the primary, the patient came in due to signs of infection and the pathogen is unknown.The surgeon removed all medacta hardware and implanted a antibiotic spacer.The surgery was completed successfully.
Additional Manufacturer Narrative
Batch review performed on 21 mar 2025.Lot 188731: (b)(4) items manufactured and released on 27-feb-2019.Expiration date: 2024-02-14.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been sold with no similar reported event during the period of review.Additional implants revised.Batch review performed on 21 mar 2025 on ball heads: mectacer 01.29.210 biolox delta ceramic ball head 12/14 ø 36 size l + 4 (k112115) lot.1811842.Lot 1811842: (b)(4) items manufactured and released on 08-apr-2019.Expiration date: 2024-03-20.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been sold with one similar reported event during the period of review.Batch review performed on 21 mar 2025 on cup: mpact 01.32.156dh acetabular shell ø56 two-holes (k132879) lot.1810288.Lot 1810288: (b)(4) items manufactured and released on 15-mar-2019.Expiration date: 2024-03-04.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.Batch review performed on 21 mar 2025 on liner: mpact 01.32.3648hct flat pe hc liner ø36/f (k103721) lot.1811218.Lot 1811218: (b)(4) items manufactured and released on 14-mar-2019.Expiration date: 2024-03-03.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been sold with no similar reported event during the period of review.Infection is a known possible complication of any surgery.Although no root cause can be established, there is no indication that any issue with the device may have caused or contributed to the event, and the document review does not indicate any potential manufacturing related cause.

• Brand Name: AMISTEM-P
• Common Device Name: STEM: 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: 21771298
• Report Number: 3005180920-2025-00278
• Device Sequence Number: 10161371
• Product Code: LPH
• UDI-Device Identifier: 07630040720014
• UDI-Public: 07630040720014
• Combination Product (Y/N): N
• Initial Reporter State: MO
• Initial Reporter Country: US
• PMA/510(K) Number: K173794
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2019
• Device Explanted Year: 2025
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 04/04/2025

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: 02/14/2024
• Device Model Number: 01.18.402
• Device Lot Number: 188731
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 03/14/2025
• Initial Report FDA Received Date: 04/04/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 02/27/2019
• 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 Age: 67 YR
• Patient Sex: Male