MAUDE Adverse Event Report: ZIMMER BIOMET, INC. G7 DUAL MOBILITY; PROSTHESIS, HIP

Catalog Number	110024463
Medical Device Problem Codes	Material Erosion (1214); Off-Label Use (1494)
Health Effect - Clinical Codes	Hearing Impairment (1881); Metal Related Pathology (4530); High metal ion levels (4847)
Date of Event	05/07/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
(b)(4).This follow-up report is being submitted to relay additional information.The following sections were updated: a1; b5-7; g2; g3; h2; h6; h10.The investigation is in process.Once the investigation has been completed, a follow-up mdr will be submitted.
Event or Problem Description
It was reported that approximately seven months post-implantation, the patient underwent a left hip revision due to elevated metal ions and has suffered hearing loss.During the revision, significant metal debris was noted and severe metal debris behind the liner.The liner, bearing, and competitor head were revised without complication.Post-revision, the patient underwent outpatient chelation therapy and inpatient hospitalization for hyperbaric treatments to reduce nearing loss associated with the metal pathology.Patient has shown some improvements in hearing, and metal ion concentrations have decreased.Patient will continue toxicology monitoring and treatments.Attempts have been made and no further information has been provided.
Additional Manufacturer Narrative
(b)(4).D10: unk stryker head and stem; cat: 110031011 lot: 66664092 bearing the customer has indicated that the product will not be returned to zimmer biomet for investigation, as its location is unknown.The investigation is in process.Once the investigation has been completed, a follow-up mdr will be submitted.
Event or Problem Description
It was reported that approximately seven months post-implantation, the patient underwent a left hip revision due to elevated metal ions and has suffered hearing loss.During the revision, significant metal debris was noted and severe metal debris behind the liner.The liner, bearing, and competitor head were revised without complication.Attempts have been made and no further information has been provided.
Additional Manufacturer Narrative
(b)(4).This follow-up report is being submitted to relay additional information.The following sections were updated: g3; h2; h3; h4; h6; h10.Visual examination of the provided pictures identified the explanted liner and dual mobility component with the head still assembled.The components can be seen covered in biodebris and a black discoloration and debris is noted all over the outer surface and inner edges of the dual mobility poly and inner and outer surface of the liner.No further observations could be made using the images alone.No product was returned; further visual and dimensional evaluations could not be performed.Review of the device history record identified no deviations or anomalies during manufacturing.Medical records were provided.Review identified the following: patient had an initial left tha 20 years prior.The patient was revised and lab results show chromium and cobalt levels were elevated.The patient was revised again due to elevated ions.During the revision significant metallosis debris was noted and severe metallosis noted behind dual mobility liner, this was explanted and femoral head was also removed.Femoral components were well fixed.Liner was placed and range of motion was stable, no other complications noted.During clinic visit, patient mentioned they lost hearing preoperatively due to high levels of metal and currently is using hearing aids, but notes little improvement.X-rays show well fixed and well positioned prosthesis.During post-revision clinic visit, cobalt and chromium levels observed to be decreased and x-rays showed well fixed prosthesis.A definitive root cause cannot be determined.However, it was also identified that zimmer biomet acetabular devices were implanted with competitor devices.Zimmer biomet has not confirmed the compatibility for these combinations of devices.It is unknown if these off-label usages may have caused or contributed to the reported events.Please note, per the ifu, it states not to use these products for other than labelled indications.This complaint is confirmed.If any further information is found which would change or alter any conclusions or information, a supplemental will be filed accordingly.Zimmer biomet will continue to monitor for trends.
Event or Problem Description
No further information is available at the time of this report.

• Brand Name: G7 DUAL MOBILITY
• Common Device Name: PROSTHESIS, HIP
• Manufacturer (Section D): ZIMMER BIOMET, INC.; 56 e. bell drive; p.o. box 587; warsaw IN 46581
• Manufacturer (Section G): ZIMMER BIOMET, INC.; 56 e. bell drive; p.o. box 587; warsaw IN 46581
• Manufacturer Contact: jennifer rapsavage ; 56 e. bell dr.; warsaw, IN 46582 ; 5745260384
• MDR Report Key: 22574851
• Report Number: 0001825034-2025-02203
• Device Sequence Number: 15842750
• Product Code: LPH
• UDI-Device Identifier: 00880304703513
• UDI-Public: (01)00880304703513(17)340318(10)66652934
• Combination Product (Y/N): N
• Initial Reporter State: PA
• Initial Reporter Country: US
• PMA/510(K) Number: K150522
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2024
• Device Explanted Year: 2025
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Other,Health Professional,Distributor
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 10/21/2025

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?: Yes
• Operator of Device: Lay User/Patient
• Device Catalogue Number: 110024463
• Device Lot Number: 66652934
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 05/07/2025
• Supplement Date Received by Manufacturer: 07/25/2025; 10/07/2025
• Initial Report FDA Received Date: 07/23/2025
• Supplement Report FDA Received Date: 08/18/2025; 10/21/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 03/18/2024
• 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; Hospitalization
• Patient Age: 45 YR
• Patient Sex: Female
• Patient Weight: 53 KG
• Patient Ethnicity: Non Hispanic
• Patient Race: White