MAUDE Adverse Event Report: MEDACTA INTERNATIONAL SA AMISTEM-P; STEM: AMISTEM P STD. SIZE 3

Model Number	01.18.403
Medical Device Problem Code	Device Appears to Trigger Rejection (1524)
Health Effect - Clinical Code	Medical device site infection (4845)
Date of Event	10/02/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Batch review performed on 09-oct-2025.Stem: amistem p 01.18.403 amistem-p std.Size 3 (k173794) lot 2416538: (b)(4) items manufactured and released on 16-jul-2024.Expiration date: 04-jul-2029.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.Ball heads: mectacer 01.29.208 mectacer head biolox delta dia.36 12/14-s (k112115) lot 2427360: (b)(4) items manufactured and released on 10-dec-2024.Expiration date: 02-oct-2029.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.Cup: mpact 01.32.154dht acetabular shell ø54 two-holes t (k230011) lot 2401654 (b)(4) items manufactured and released on 01-jul-2024.Expiration date: 13-jun-2029.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.Liner: mpact 01.32.3648hct flat pe hc liner ø36/f (k103721) lot 2415572: (b)(4) items manufactured and released on 17-jun-2024.Expiration date: 03-jun-2029.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.Screws: mpact 01.43.0030 cancellous bone screw ø 6,5 l30 (k200391) lot 2423373:(b)(4) items manufactured and released on 30-sep-2024.Expiration date: 11-sep-2029.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.Conclusions: 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.
Event or Problem Description
After 9 months from the primary, the patient came in due to signs of an infection and the pathogen is unknown.The surgeon revised the entire hip system while upsizing the head, liner and cup.The surgery was completed successfully.

• Brand Name: AMISTEM-P
• Common Device Name: STEM: AMISTEM P STD. SIZE 3
• 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: 23336123
• Report Number: 3005180920-2025-01036
• Device Sequence Number: 18504629
• Product Code: LZO
• UDI-Device Identifier: 07630040720021
• UDI-Public: 07630040720021
• 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: 2025
• 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): 10/20/2025

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 Model Number: 01.18.403
• Device Lot Number: 2416538
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 10/02/2025
• Initial Report FDA Received Date: 10/20/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 07/16/2024
• 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