MAUDE Adverse Event Report: Medacta International SA Shoulder System; Glenosphere - Ø39x24.5

Model Number	04.01.0170
Medical Device Problem Code	Device Dislodged or Dislocated (2923)
Health Effect - Clinical Code	Joint Dislocation (2374)
Date of Event	08/25/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
Revision surgery due to a dislocation of the liner and glenosphere after about 2 years and 3 months from primary.The surgeon revised the +0mm/0° metaphysis to a same size metaphysis, revised the d 39/+3mm reverse liner to a d 42/+0 constrained liner, and revised the d 39x24.5 glenosphere to a 42xd 24.5 lat.Glenosphere.
Additional Manufacturer Narrative
Batch review performed on 09 september 2026 reverse shoulder system 04.01.0170 glenosphere - d 39x24.5 (k170452) lot.2339652: (b)(4) items manufactured and released on 23 january 2024.Expiration date: 07 january 2029.No anomalies found related to the problem.To date, all items of the same lot have been sold, with no similar reported events during the period of review.Reverse shoulder system 04.01.0123 humeral reverse hc liner d 39/+3mm (k170452) lot.2315954: (b)(4) items manufactured and released on 24 august 2023.Expiration date: 02 august 2028.No anomalies found related to the problem.To date, all items of the same lot have been sold, with no similar reported events during the period of review.Root cause: dislocation is possible literature described adverse event after primary joint arthroplasties and causes are often unknown.There is no indication that any potential issue with the device may have caused or contributed to the event and the investigation does not indicate any potential manufacturing related issue or systemic deficiency.

• Brand Name: Shoulder System
• Common Device Name: Glenosphere - Ø39x24.5
• Manufacturer (Section D): Medacta International SA; strada regina; castel san pietro 6874 ; SZ 6874
• Manufacturer Contact: marco giannessi ; strada regina; castel san pietro 6874 ; SZ 6874
• MDR Report Key: 50692305
• Report Number: 3005180920-2026-00926
• Device Sequence Number: 18540548
• Product Code: PHX
• UDI-Device Identifier: 07630040706575
• UDI-Public: 07630040706575
• Combination Product (Y/N): N
• PMA/510(K) Number: K170452
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2024
• Device Explanted Year: 2026
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Type of Report: Initial
• Report Date (Section B): 09/09/2026

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: 04.01.0170
• Device Lot Number: 2339652
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/25/2026
• Initial Report FDA Received Date: 09/09/2026
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 01/23/2024
• 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 Age: 74 YR
• Patient Sex: Male