MRH 6481-2-120Recalls & reported problems
Howmedica Osteonics Corp. · Modular Rotating Hinge Knee-Axle · Class 2 · Implant
All models of MRH (35)
Data updated Oct 16, 2026 from official FDA records · Editorial policy
- Adverse event reports
- 14
- Deaths reported
- 0
- Injuries reported
- 14
- Recalls naming it
- 0
Summary
The FDA's MAUDE database contains 14 adverse event reports that list this exact device (DI 07613327045253), received between Dec 28, 2018 and May 21, 2025 — classified as 14 injuries.
The most frequently reported specific device problem is “Fracture” (7 reports).
Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event, and counts can't be used to compare devices or estimate failure rates. What reports can and can't tell you · How this data works · Data updated Oct 16, 2026.
Reports received per month
Most reported problems
Device problems
- Fracture7
- Unstable3
- Break2
- Insufficient Device Problem Information2
- Adverse Event Without Identified Device or Use Problem1
- Device Dislodged or Dislocated1
- Noise, Audible1
- Patient Device Interaction Problem1
Patient problems
- Insufficient Information6
- Injury3
- Joint Laxity3
- Unspecified Infection3
- Ambulation or Postural Difficulties2
- Fall1
- Foreign Body Reaction1
- Inflammation1
Recent adverse event reports
The 14 most recent of 14 reports, in the reporter's own words as published by the FDA.
InjuryMay 21, 2025Unstable; Unstable
REVISION OF LEFT MRH KNEE FOR REPORTED PATELLA INSTABILITY. SURGEON MODIFIED PROSTHESIS BY BURRING AXLE AND CEMENTING SYNTHETIC TAPE INTO AXLE.
Patient problems: Joint Laxity
MAUDE report 22066563 ↗InjuryAug 22, 2024Fracture; Fracture
BREAKAGE OF THE COUPLING MECHANISM (COUPLING AXIS) 10 YEARS AFTER IMPLANTATION.
Patient problems: Insufficient Information
MAUDE report 20039219 ↗InjuryApr 18, 2024Fracture; Fracture
THE FOLLOWING WAS REPORTED: MRH AXLE BROKEN IN THE MIDDLE. NO VIOLENCE/NO TRAUMA - ACCORDING TO THE DOCTOR, THE AXLE BROKE WITHOUT ANY EXTERNAL INFLUENCE WHEN THE KNEE WAS BENT. PATIENT HAS PRESENTED HIMSELF AT THE CONSULTATION. LOUD NOISE WHEN BENDING. ACCORDING TO THE PATIENT, THERE WAS ONLY A POPPING SOUND. THE NOW DEFECTIVE SYSTEM WAS INSTALLED IN ANOTHER CLINIC IN 2016. HERE TODAY ONLY THE REVISION PROCEDURE.
Patient problems: Insufficient Information
MAUDE report 19130566 ↗InjuryJan 5, 2024Fracture; Fracture
REVISION OF DISTAL FEMUR GMRS, DISCOVERED BROKEN AXEL DURING SURGERY.
Patient problems: Insufficient Information
MAUDE report 18453032 ↗InjuryJan 12, 2023Fracture; Noise, Audible; Fracture; Noise, Audible
THE GMRS AXLE SNAPPED IN HALF WHILE IMPLANTED IN THE PATIENT. NO OTHER COMPONENTS WERE DAMAGED. THERE WAS NO ACCIDENT OR INJURY LEADING TO THE EVENT. THE PATIENT EXPERIENCED CLICKING IN HIS KNEE AND WENT IN FOR IMAGING. CT REVEALED A BROKEN AXLE AND A REVISION SURGERY WAS REQUIRED.
Patient problems: Insufficient Information
MAUDE report 16143528 ↗InjuryNov 14, 2022Insufficient Device Problem Information; Insufficient Device Problem Information
REVISION OF MRH INITIALLY DONE IN 2012. SURGEON OUTLINED REASON FOR REVISION AS METALOSIS INFECTION. THE SURGEON REMOVED ALL MRH IMPLANTS AND IMPLANTED A COMPETITOR SPACER
Patient problems: Unspecified Infection
MAUDE report 15788327 ↗InjuryOct 14, 2022Break; Fracture; Break; Fracture
THE CUSTOMER REPORTED A "BROKEN AXLE" TO THE COMPETENT AUTHORITY.
Patient problems: Ambulation or Postural Difficulties; Insufficient Information
MAUDE report 15604778 ↗InjurySep 16, 2022Fracture; Unstable; Fracture; Unstable
IT WAS REPORTED THAT THE PATIENT REQUIRED A REVISION OF THE COMPONENTS. IT WAS FURTHER REPORTED THAT THE PATIENT SUFFERED AN ACUTE FALL WITH HYPEREXTENSION IN MARCH 2022. AN AUDIBLE CLICKING WAS REPORTED AS A RESULT. PATIENT EXPERIENCED 'INSTABILITY' IN JULY 2022.
Patient problems: Fall; Joint Laxity
MAUDE report 15436364 ↗InjuryOct 27, 2021Unstable; Adverse Event Without Identified Device or Use Problem; Unstable; Adverse Event Without Identified Device or Use Problem
AS REPORTED: "PATIENT PRESENTED WITH INSTABILITY OF AN MRH CONSTRUCT. DR. SUSPECTED INFECTION, BUT TEST RESULTS WERE NOT CONCLUSIVE GIVEN THE PATIENT¿S COMORBIDITIES. NO COMPLAINTS HAVE BEEN FILED AGAINST THE PREVIOUS IMPLANTS, NO FURTHER INFO AVAILABLE." SPOKE TO REP, WHO PROVIDED THE REVISION USAGE SHEET AND CONFIRMED THAT NO FURTHER INFORMATION WILL BE RELEASED BY THE HOSPITAL OR SURGEON.
Patient problems: Joint Laxity; Unspecified Infection
MAUDE report 12708589 ↗InjuryOct 14, 2021Fracture; Fracture
STRYKER REP REPORTED A REVISION SURGERY. THE PATIENT HAD A GMRS DISTAL FEMUR IN SITU. IT WAS FOUND THAT THE AXLE OF THE KNEE COMPONENT HAD BROKEN. NEW LINKAGE ITEMS WERE REPLACED DURING THE OPERATION.
Patient problems: Insufficient Information
MAUDE report 12632725 ↗InjuryApr 19, 2021Patient Device Interaction Problem; Patient Device Interaction Problem
A PATIENT SPECIFIC SOLUTIONS REQUEST WAS RECEIVED FOR THE PATIENT'S RIGHT DISTAL FEMUR WITH NOTES: "UNDERWENT CONSTRAINED TKA WITH STRYKER COMPONENTS AND AFTER INITIAL POSTOP PERIOD OF DOING WELL HAS HAD PERSISTENT OSTEOLYSIS, PAIN AND DECREASING FUNCTION. ALLERGY TESTING REVEALED NICKEL ALLERGY AND MULTIPLE BLOOD AND ASPIRATIONS OF THE JOINT HAVE BEEN NEGATIVE FOR INFECTION." A NICKEL FREE DISTAL FREE FEMUR IMPLANT IS BEING REQUESTED WITH A PLANNED DATE OF SURGERY (B)(6) 2021. UPDATE: "THE REASON FOR REVISION IS METAL SENSITIVITY."
Patient problems: Foreign Body Reaction; Inflammation; Pain
MAUDE report 11691469 ↗InjuryApr 4, 2019Device Dislodged or Dislocated; Device Dislodged or Dislocated
PATIENT DISLOCATED HER HINGE PROSTHESIS. FEMUR WAS LOOSE. PATIENT REVISION.
Patient problems: Injury; Joint Dislocation
MAUDE report 8484435 ↗InjuryMar 20, 2019Insufficient Device Problem Information; Insufficient Device Problem Information
IT WAS REPORTED THROUGH THE SUBMISSION OF A REVISION IMPLANT SHEET THAT PATIENT'S RIGHT KNEE WAS REVISED. A NOTE AT THE BOTTOM OF THE SHEET REPORTS "REVISED FOR INSTABILITY AND POSSIBLE INFECTION". AN MRH KNEE CONSTRUCT WAS REVISED TO AN MRH/ GMRS KNEE CONSTRUCT.
Patient problems: Ambulation or Postural Difficulties; Injury; Unspecified Infection
MAUDE report 8436278 ↗InjuryDec 28, 2018Break; Break
IT WAS REPORTED THAT THE PATIENT'S LEFT TOTAL DISTAL FEMUR WAS REVISED AFTER PATIENT COMPLAINT OF PAIN. INTRA-OPERATIVELY, THE AXLE WAS FOUND TO BE BROKEN. NO OTHER CAUSE OR CONTRIBUTOR TO PAIN WAS REPORTED.
Patient problems: Injury
MAUDE report 8204649 ↗
Other PROSTHESIS, KNEE, FEMOROTIBIAL, CONSTRAINED, CEMENTED, METAL/POLYMER devices
- ELEOS™ 25001208EOnkos Surgical, Inc. · PROSTHESIS, KNEE, FEMOROTIBIAL, CONSTRAINED, CEMENTED, METAL/POLYMER3 deaths193 reports
- ELEOS™ THSMWRS01MOnkos Surgical, Inc. · PROSTHESIS, KNEE, FEMOROTIBIAL, CONSTRAINED, CEMENTED, METAL/POLYMER190 reports
- "UNITED" USTAR II Hip System 1115-1413United Orthopedic Corp. · Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/Polymer3 recalls3 reports
- "UNITED" USTAR II Hip System 1115-1217United Orthopedic Corp. · Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/Polymer3 recalls0 reports
- "UNITED" USTAR II Hip System 1115-1417United Orthopedic Corp. · Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/Polymer3 recalls0 reports
- "UNITED" USTAR II Hip System 1115-1213United Orthopedic Corp. · Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/Polymer3 recalls0 reports
- Endo-Model Modular Knee Prosthesis System 15-3816/11WALDEMAR LINK GmbH & Co. KG · Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/Polymer2 recalls6 reports
- Endo-Model Modular Knee Prosthesis System 15-3816/12WALDEMAR LINK GmbH & Co. KG · Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/Polymer2 recalls6 reports
Sources and updates
- Device record: FDA GUDID, file dated Oct 13, 2026 · View this device in AccessGUDID ↗
- Adverse event reports: FDA MAUDE, file dated Oct 14, 2026 · each report above links to its original FDA record
- Recalls: FDA Medical Device Recalls, file dated Oct 16, 2026
- Page last rebuilt: Oct 16, 2026. Data downloaded through openFDA, which notes it is not validated for clinical or regulatory use.
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