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Triathlon 5531-G-516Recalls & reported problems

Howmedica Osteonics Corp. · Tibial Bearing Insert · Class 2 · Implant

All models of Triathlon (608)

Data updated Oct 18, 2026 from official FDA records · Editorial policy

Adverse event reports
4
Deaths reported
0
Injuries reported
4
Recalls naming it
0

Summary

The FDA's MAUDE database contains 4 adverse event reports that list this exact device (DI 07613327045895), received between Feb 22, 2019 and Feb 20, 2024 — classified as 4 injuries.

The most frequently reported specific device problem is “Unstable” (2 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 18, 2026.

Reports received per month

Nov 2023: 0 reportsDec 2023: 0 reportsJan 2024: 0 reportsFeb 2024: 1 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

  • Unstable2
  • Adverse Event Without Identified Device or Use Problem1
  • Fracture1
  • Insufficient Device Problem Information1

Patient problems

  • Unspecified Infection2
  • Ambulation or Postural Difficulties1
  • Joint Laxity1
  • Pain1

Recent adverse event reports

The 4 most recent of 4 reports, in the reporter's own words as published by the FDA.

  • InjuryFeb 20, 2024Fracture; Unstable; Fracture; Unstable

    IT WAS REPORTED, THAT THE PATIENT'S LEFT KNEE WAS REVISED, DUE TO PAIN AND FLEXION INSTABILITY. INTRA-OPERATIVELY, THE FOLLOWING WERE NOTED, FOR THE INSERT: POSTERIOR MEDIAL CONDYLE WEAR (ALMOST WORN TO THE BASEPLATE IN PARTS), PIECES FRACTURED OFF, AND POSTERIOR LATERAL WEAR AT THE LIP OF THE LINER. THE FEMUR, INSERT, AND TIBIA WERE REVISED TO A TS KNEE WITH STEMS, CONES, AND AUGMENTS WITH A THICKER INSERT. REP CONFIRMED, THAT NO FURTHER INFORMATION WILL BE RELEASED BY THE HOSPITAL OR SURGEON.

    Patient problems: Pain

    MAUDE report 18744173 ↗
  • InjuryMar 14, 2022Adverse Event Without Identified Device or Use Problem; Adverse Event Without Identified Device or Use Problem

    PERFORMED AN I&D WITH TIBIAL INSERT EXCHANGE ON A LEFT INFECTED KNEE ORIGINALLY DONE APPROXIMATELY 5 YEARS AGO, A TRIATHLON CS KNEE. NO ALLEGATIONS MADE AGAINST THE IMPLANTS. UPDATE 22/FEBRUARY/2022: REP PROVIDED THE REVISION USAGE SHEET AND CONFIRMED THAT NO FURTHER INFORMATION WILL BE RELEASED DUE TO HOSPITAL POLICY.

    Patient problems: Unspecified Infection

    MAUDE report 13757900 ↗
  • InjuryJan 12, 2022Unstable; Unstable

    THIS PI IS FOR THE REVISION OF THE PATIENT'S RIGHT KNEE ON (B)(6) 2021. IN PROVIDING USAGE SHEETS WHILE REPORTING A REVISION OF THE PATIENT'S RIGHT KNEE ON (B)(6) 2021, REP PROVIDED A PRIMARY USAGE SHEET AND A USAGE SHEET FROM A REVISION ON (B)(6) 2021. A 5X16 CS INSERT WAS REVISED TO ANOTHER 5X16 CS INSERT DUE TO FLEXION INSTABILITY. THE REPORTING REP WAS NOT PRESENT FOR THE PROCEDURE AND NO RECORDS EXIST CONFIRMING ANY STRYKER REP WAS PRESENT FOR THE PROCEDURE. REP CONFIRMED THAT NO FURTHER INFORMATION WILL BE RELEASED BY THE HOSPITAL OR SURGEON.

    Patient problems: Ambulation or Postural Difficulties; Joint Laxity

    MAUDE report 13240094 ↗
  • InjuryFeb 22, 2019Insufficient Device Problem Information; Insufficient Device Problem Information

    POSTOPERATIVE DIAGNOSIS: PATIENT UNDERWENT PRIMARY RIGHT KNEE REPLACEMENT ON (B)(6) 2018. PATIENT RETURNED TO HAVE RIGHT KNEE IRRIGATION AND DEBRIDEMENT, POLYETHYLENE LINER EXCHANGE FOR AN ACUTE PERIPROSTHETIC JOINT INFECTION ON (B)(6) 2018 REPORTED AS (B)(4). PATIENT RETURNED TO HAVE IRRIGATION AND DEBRIDEMENT, EXPLANTATION OF ALL COMPONENTS, PLACEMENT OF AN ARTICULATING ANTIBIOTIC SPACER ON (B)(6) 2018.

    Patient problems: Unspecified Infection

    MAUDE report 8362012 ↗

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

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