Skip to content

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

Nov 2023: 0 reportsDec 2023: 0 reportsJan 2024: 0 reportsFeb 2024: 0 reportsMar 2024: 0 reportsApr 2024: 0 reportsMay 2024: 0 reportsJun 2024: 0 reportsJul 2024: 0 reportsAug 2024: 0 reportsSep 2024: 0 reportsOct 2024: 0 reportsNov 2024: 0 reportsDec 2024: 0 reportsJan 2025: 0 reportsFeb 2025: 0 reportsMar 2025: 0 reportsApr 2025: 0 reportsMay 2025: 0 reportsJun 2025: 0 reportsJul 2025: 0 reportsAug 2025: 0 reportsSep 2025: 0 reportsOct 2025: 0 reportsNov 2025: 0 reportsDec 2025: 0 reportsJan 2026: 0 reportsFeb 2026: 0 reportsMar 2026: 0 reportsApr 2026: 0 reportsMay 2026: 0 reportsJun 2026: 0 reportsJul 2026: 0 reportsAug 2026: 0 reportsSep 2026: 0 reportsOct 2026: 0 reports2024202520261
Last 36 months. The most recent month may be incomplete.

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

All PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, COATED, POLYMER/METAL/POLYMER devices →

Sources and updates

How reports and recalls are matched · Editorial policy · Report an error on this page