MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRIDENT HEMISPHERICAL SOLID BACK SHELL; PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/POLYMER, POROUS UNCEMENTED

Catalog Number	500-11-52E
Medical Device Problem Codes	Corroded (1131); Degraded (1153)
Health Effect - Clinical Codes	Foreign Body Reaction (1868); Pain (1994); Swelling/ Edema (4577)
Date of Event	01/16/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
The following was reported: "i have an explanted mdm from a patient.The operating surgeon who revised it has requested it be sent back to stryker for investigation." update: patient had pain and swelling at hip - pseudo tumour collection of fluid.Reason for revision: pain and swelling secondary to armd.During the revision, corrosion at interface between dm liner and the shell was noticed.Shell, liner and head were revised.The stem remained implanted.
Additional Manufacturer Narrative
Review of the device history records indicate devices were manufactured and accepted into final stock with no relevant reported discrepancies.There have been no other similar events for the lot referenced.It was noted that the device is not available for evaluation.Should additional information become available, it will be provided in a supplemental report upon completion of the investigation.
Additional Manufacturer Narrative
Reported event: an event regarding altr & corrosion involving a trident shell was reported.The event for corrosion was confirmed via inspection of the returned device.Method & results: -product evaluation and results: visual inspection of the returned device indicated bone ingrowth was observed on the device.Damage was consistent with the interaction between the mdm metal liner and the shell.Black debris was observed on the mating surfaces.The appearance of the debris is consistent with a corrosion product and material transfer from the shell/biological material.-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: it was reported that the cause of revision for the patient pain and swelling at hip - pseudo tumor collection of fluid.Visual inspection of the returned device indicated bone ingrowth was observed on the device.Damage was consistent with the interaction between the mdm metal liner and the shell.Black debris was observed on the mating surfaces.The appearance of the debris is consistent with a corrosion product and material transfer from the shell/biological material.No further investigation for this event is possible at this time.If additional information becomes available to indicate further evaluation is warranted, this record will be reopened.
Event or Problem Description
The following was reported: "i have an explanted mdm from a patient.The operating surgeon who revised it has requested it be sent back to stryker for investigation." update: patient had pain and swelling at hip - pseudo tumour collection of fluid.Reason for revision: pain and swelling secondary to armd.During the revision, corrosion at interface between dm liner and the shell was noticed.Shell, liner and head were revised.The stem remained implanted.

• Brand Name: TRIDENT HEMISPHERICAL SOLID BACK SHELL
• 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: marisol santiago ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 21442661
• Report Number: 0002249697-2025-00226
• Device Sequence Number: 14584725
• Product Code: LPH
• UDI-Device Identifier: 04546540431868
• UDI-Public: 04546540431868
• Combination Product (Y/N): N
• Initial Reporter Country: UK
• PMA/510(K) Number: K143085
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2020
• Device Explanted Year: 2025
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 06/04/2025

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: 10/31/2024
• Device Catalogue Number: 500-11-52E
• Device Lot Number: 75233501
• 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: 01/29/2025
• Supplement Date Received by Manufacturer: 05/16/2025
• Initial Report FDA Received Date: 02/23/2025
• Supplement Report FDA Received Date: 06/04/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 10/30/2019
• 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: Hospitalization; Required Intervention
• Patient Age: 68 YR
• Patient Sex: Female