MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRIDENTII TRITANIUM MULTI 46C; PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/POLYMER, POROUS UNCEMENTED

Catalog Number	709-04-46C
Medical Device Problem Codes	Degraded (1153); Patient-Device Incompatibility (2682)
Health Effect - Clinical Codes	Foreign Body Reaction (1868); Hypersensitivity/Allergic reaction (1907); Metal Related Pathology (4530)
Date of Event	02/05/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
An evaluation of the device cannot be performed as the device was not returned to the manufacturer.Should additional information become available it will be reported in a supplemental report upon completion of the investigation.
Event or Problem Description
The following was reported: around autumn 2024, the patient was found to have a metal (cobalt chrome) allergy, and there was a possibility that the revision would be performed again.After that, the patient requested that the surgery be performed.Revision tha was performed on the patient.Although there was no loosening or malpositioning of the implants or any noticeable damage, damage to the soft tissue (particularly the gluteus medius muscle) was observed.When the implants were removed, white tissue was found to be stuck to the inner surface of the cup (between the trident ii-mdm liner).Request from the doctor although it is thought that this phenomenon may be due to an allergic reaction of the patient to the co-cr alloy implant, the doctor believes that there may be other factors involved, as the soft tissue damage was severe and there was a lot of tissue adhesion between the cup and liner.The doctor has requested that stryker investigate the extent and cause of damage and wear of the devices that was removed on (b)(6).
Event or Problem Description
No new information.
Additional Manufacturer Narrative
Reported event: an event regarding altr and allergy involving a trident ii shell was reported.The event was not confirmed.Method & results: -product evaluation and results: visual inspection of the returned device indicated that the device has bone ingrown and damage consistent with time spent implanted and damage consistent with explantation.-clinician review: no medical records were received for review with a clinical consultant.-product history review: review of the device history records indicate devices were manufactured and accepted into final stock with no relevant reported discrepancies.-complaint history review: there have been no other similar events for the lot referenced.Conclusions: the exact cause of the event could not be determined because insufficient information was provided.Further information such as pathology reports, pre- and post-operative x-rays and the revision operative report as well as patient history and follow-up notes are needed to complete the investigation for determining root cause.No further investigation for this event is possible at this time.If devices and/or additional information become available to indicate further evaluation is warranted, this record will be reopened.

• Brand Name: TRIDENTII TRITANIUM MULTI 46C
• Common Device Name: PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/POLYMER, POROUS UNCEMENTED
• Manufacturer (Section D): STRYKER ORTHOPAEDICS-MAHWAH; 325 corporate drive; mahwah NJ 07430
• Manufacturer (Section G): STRYKER ORTHOPAEDICS-CORK; ida industrial estate; carrigtwohill NA ; EI NA
• Manufacturer Contact: arokiya raj ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 21511249
• Report Number: 0002249697-2025-00261
• Device Sequence Number: 4590992
• Product Code: LPH
• UDI-Device Identifier: 07613327344035
• UDI-Public: 07613327344035
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K171768
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2024
• Device Explanted Year: 2025
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 06/30/2025

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
• Device Catalogue Number: 709-04-46C
• Device Lot Number: 97969201A
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 02/05/2025
• Supplement Date Received by Manufacturer: 06/05/2025
• Initial Report FDA Received Date: 03/03/2025
• Supplement Report FDA Received Date: 06/30/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 12/20/2022
• 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; Hospitalization
• Patient Age: 71 YR
• Patient Sex: Female