Triathlon 5556-L-360Recalls & reported problems
Howmedica Osteonics Corp. · Patella · Class 2 · Implant
All models of Triathlon (608)
Data updated Oct 18, 2026 from official FDA records · Editorial policy
- Adverse event reports
- 2
- Deaths reported
- 0
- Injuries reported
- 1
- Recalls naming it
- 0
Summary
The FDA's MAUDE database contains 2 adverse event reports that list this exact device (DI 07613327013511), received between May 14, 2021 and Oct 11, 2023 — classified as 1 injury, 1 malfunction.
The most frequently reported specific device problem is “Difficult to Insert” (1 report).
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 18, 2026.
Reports received per month
Most reported problems
Device problems
- Difficult to Insert1
- Material Deformation1
Patient problems
- Insufficient Information1
- Joint Laxity1
- Pain1
Recent adverse event reports
The 2 most recent of 2 reports, in the reporter's own words as published by the FDA.
InjuryOct 11, 2023Material Deformation; Material Deformation
IT WAS REPORTED THAT THE PATIENT'S RIGHT KNEE WAS REVISED DUE TO PAIN AND INSTABILITY. INTRA-OPERATIVELY, DAMAGE TO THE PATELLAR COMPONENT WAS NOTED (REPORTED AS 'MORE LIKE NOTCHING, LIKE IT WAS HITTING SOMETHING, THAN WEAR'). THE PATELLAR COMPONENT AND INSERT WERE REVISED. REP CONFIRMED THAT NO FURTHER INFORMATION WILL BE RELEASED BY THE HOSPITAL OR SURGEON.
Patient problems: Joint Laxity; Pain
MAUDE report 17911144 ↗MalfunctionMay 14, 2021Difficult to Insert; Difficult to Insert
TRIATHLON TRITANIUM PATELLA NOT ABLE TO BE FULLY SEATED. MULTIPLE ATTEMPTS TO FULLY SEAT INCLUDING USING PRESS-FIT CLAMP AND BUTTON WITHOUT SUCCESS. MEDIAL POST SITTING UP AND PREVENTING THE PATELLA FROM SITTING DOWN NICELY. THE SURGEON ENDED UP HAVING TO CEMENT A PATELLA RATHER THAN PRESS FIT. SURGICAL DELAY: = 15 MINUTES. CASE TYPE / APPLICATION: TKA. UPDATE: DRILLS AND TEMPLATES USED: MB DRILL BIT WITH SYMMETRIC 36 PATELLA TEMPLATE. PATIENT BONE QUALITY: VERY SCLEROTIC, HARD BONE CLAMP USED: TRITANIUM PATELLA CLAMP WITH SYMMETRIC 36 PATELLA BUTTON FOLLOWED BY WHITE TIP PATELLA CLAMP ATTACHMENT ON TEMPLATE/CLAMP HANDLE AS WELL AS THE CIRCULAR CLAMP ATTACHMENT. PATELLA IMPLANTED: THE PATELLA IN QUESTION WAS NOT IMPLANTED. AFTER UNSUCCESSFULLY BEING SEATED, TRITANIUM PATELLA WAS REMOVED AND A SYMMETRIC CEMENTED PATELLA WAS IMPLANTED. THE UNSUCCESSFULLY IMPLANTED PATELLA IS NOW AVAILABLE FOR RETURN.
Patient problems: Insufficient Information
MAUDE report 11826892 ↗
Other PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, COATED, POLYMER/METAL/POLYMER devices
- ATTUNE 1512-14-050Depuy (Ireland) · PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, COATED, POLYMER/METAL/POLYMER106 reports
- ATTUNE 1504-40-205Depuy (Ireland) · PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, COATED, POLYMER/METAL/POLYMER1 recall53 reports
- ATTUNE 1504-40-105Depuy (Ireland) · PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, COATED, POLYMER/METAL/POLYMER1 recall46 reports
- ATTUNE 1547-06-001Depuy (Ireland) · PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, COATED, POLYMER/METAL/POLYMER1 recall37 reports
- ATTUNE 1513-12-060Depuy (Ireland) · PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, COATED, POLYMER/METAL/POLYMER72 reports
- Triathlon 5521-B-300Howmedica Osteonics Corp. · PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, COATED, POLYMER/METAL/POLYMER1 recall19 reports
- Triathlon 5531-G-709-EHowmedica Osteonics Corp. · PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, COATED, POLYMER/METAL/POLYMER1 recall19 reports
- ATTUNE 1512-16-080Depuy (Ireland) · PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, COATED, POLYMER/METAL/POLYMER1 recall16 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 18, 2026. Data downloaded through openFDA, which notes it is not validated for clinical or regulatory use.
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