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GMK Sphere Total Knee System 02.12.0510FLRecalls & reported problems

Medacta International SA · Tibial Insert Fixed SPHERE Flex #5/10 mm L · Class 2 · Implant

All models of GMK Sphere Total Knee System (209)

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

Quick summary

This Medacta GMK Sphere total knee implant uses a fixed tibial insert (liner) that sits between the metal parts of an artificial knee. Most of the 68 reports describe patients later needing revision surgery — mainly for infection in the knee (some traced to Staphylococcus) and for instability or looseness of the joint, with pain also mentioned. Reports describe67 injuries and no deaths. There are no recalls naming this device.

AI-generated from the FDA records on this page and checked automatically against the numbers below. Read the details before relying on it.

Adverse event reports
68
Deaths reported
0
Injuries reported
67
Recalls naming it
0

Summary

The FDA's MAUDE database contains 68 adverse event reports that list this exact device (DI 07630030826733), received between Oct 20, 2017 and Jun 26, 2026 — classified as 67 injuries, 1 malfunction.

The most frequently reported specific device problem is “Device Appears to Trigger Rejection” (11 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: 1 reportsDec 2023: 0 reportsJan 2024: 0 reportsFeb 2024: 0 reportsMar 2024: 1 reportsApr 2024: 0 reportsMay 2024: 1 reportsJun 2024: 2 reportsJul 2024: 0 reportsAug 2024: 0 reportsSep 2024: 0 reportsOct 2024: 0 reportsNov 2024: 0 reportsDec 2024: 0 reportsJan 2025: 0 reportsFeb 2025: 1 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: 1 reportsJun 2026: 1 reportsJul 2026: 0 reportsAug 2026: 0 reportsSep 2026: 0 reportsOct 2026: 0 reports2024202520262
Last 36 months. The most recent month may be incomplete.

Most reported problems

Device problems

  • Appropriate Device Problem Term/Code Not Available25
  • Adverse Event Without Identified Device or Use Problem15
  • Device Appears to Trigger Rejection11
  • Insufficient Device Problem Information4
  • Unstable4
  • Device Dislodged or Dislocated3
  • Device Contamination With Biological Material1
  • Device Issue1

Patient problems

  • Unspecified Infection38
  • Joint Laxity9
  • Medical device site infection6
  • Joint Disorder5
  • Pain5
  • Insufficient Information2
  • Loss of Range of Motion2
  • Joint Dislocation1

Recent adverse event reports

The 25 most recent of 68 reports, in the reporter's own words as published by the FDA.

  • InjuryJun 26, 2026Device Appears to Trigger Rejection

    REVISION SURGERY AFTER 4 YEARS AND 1 MONTH DUE TO INFECTION WITH THE PATHOGEN BEING STAPHYLOCOCCUS. THE SURGEON PERFORMED A WASHOUT AND REVISED THE 10M FLEX S5L INSERT TO A 12MM FLEX 5L INSERT AT HIS DISCRETION. THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Medical device site infection

    MAUDE report 25632989 ↗
  • InjuryMay 26, 2026Device Appears to Trigger Rejection

    AT ABOUT 2 YEARS 11 MONTHS FROM THE PRIMARY, THE PATIENT CAME IN DUE TO SIGNS OF INFECTION AND THE PATHOGEN IS UNKNOWN. THE SURGEON PERFORMED A WASHOUT AND REVISED THE FLEX S5L - 10 MM INSERT TO A SAME SIZE INSERT. THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Medical device site infection

    MAUDE report 25275473 ↗
  • InjuryFeb 19, 2025Appropriate Device Problem Term/Code Not Available; Appropriate Device Problem Term/Code Not Available

    AT ABOUT 2 YEARS 5 MONTHS AFTER THE PRIMARY, THE PATIENT CAME IN REPORTING INSTABILITY DUE TO LAXITY AND THE CAUSE OF THE LAXITY IS UNKNOWN. THE SURGEON REVISED THE LINER (11MM TO 13MM) TO GIVE THE PATIENT MORE STABILITY. THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Joint Laxity

    MAUDE report 21408528 ↗
  • InjuryJun 25, 2024Adverse Event Without Identified Device or Use Problem; Adverse Event Without Identified Device or Use Problem

    AT 10 MONTHS FROM THE PRIMARY, THE PATIENT CAME IN REPORTING INSTABILITY DUE TO LAXITY AND THE CAUSE OF THE LAXITY WAS UNKNOWN. THE SURGEON UPSIZED THE INSERT (FROM 10 TO 13 MM) AND THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Joint Laxity

    MAUDE report 19606503 ↗
  • InjuryJun 5, 2024Adverse Event Without Identified Device or Use Problem; Adverse Event Without Identified Device or Use Problem

    REVISION FOR KNEE INSTABILITY AND THE CAUSE IS UNKNOWN. AT ABOUT 1 YEAR FROM PRIMARY THE SURGEON REVISED THE LINER, IMPLANTING A THICKER ONE (FROM 10 TO 14 MM) AND THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Joint Laxity

    MAUDE report 19465865 ↗
  • InjuryMay 24, 2024Device Appears to Trigger Rejection; Device Appears to Trigger Rejection

    ON (B)(6) 2022, THE PATIENT UNDERWENT KNEE PRIMARY SURGERY. IMPLANTATION OF GMK-SPHERE FEMORAL COMPONENT 7 - TIBIAL INSERT 5 10MM - TIBIAL TRAY 5, WITHOUT RESURFACING PATELLA. ON (B)(6) 2024, THE PATIENT UNDERWENT THE FIRST REVISION SURGERY DUE TO ANTERIOR PAIN. PATELLA BONE RESURFACING PERFORMED AND RESURFACING PATELLA SIZE 4 IMPLANTED SUCCESSFULLY. NO ISSUES WERE DETECTED WITH THE OTHER GMK SPHERE DEVICES IMPLANTED IN THE PATIENT'S KNEE. ON (B)(6) 2024, THE PATIENT UNDERWENT A SECOND REVISION SURGERY DUE TO INFECTION CAUSED BY STAPHYLOCOCCUS AUREUS. WASHING OF THE KNEE, EXPLANTATION OF THE TIBIAL INSERT (PREVENTION) AND REIMPLANTATION OF A NEW ONE WITH THE SAME SIZE.

    Patient problems: Unspecified Infection

    MAUDE report 19390103 ↗
  • InjuryMar 20, 2024Adverse Event Without Identified Device or Use Problem; Adverse Event Without Identified Device or Use Problem

    AT ABOUT 1 YEAR AND 1 MONTH AFTER PRIMARY, THE PATIENT CAME IN REPORTING INSTABILITY AND THE CAUSE IS UNKNOWN. THE SURGEON UPSIZED THE INSERT (10 TO 20 MM) AND ALSO DECIDED TO RESURFACE THE PATIENT'S NATURAL PATELLA. THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Joint Laxity

    MAUDE report 18940463 ↗
  • InjuryNov 17, 2023Device Appears to Trigger Rejection; Device Appears to Trigger Rejection

    REVISION SURGERY FOR A KNEE INFECTION AT 1 YEAR AND 11 MONTHS POST PRIMARY. THE SURGEON REVISED THE LINER SUCCESSFULLY. THE PATHOGEN IS UNKNOWN.

    Patient problems: Medical device site infection

    MAUDE report 18158251 ↗
  • InjuryOct 4, 2023Loosening of Implant Not Related to Bone-Ingrowth; Loosening of Implant Not Related to Bone-Ingrowth

    AT ABOUT 1 YEAR FROM THE PRIMARY, THE PATIENT CAME IN REPORTING PAIN AND INSTABILITY DUE TO A LOOSE TIBIA AND THE CAUSE IS UNKNOWN. THE SURGEON REVISED THE TIBIA AND THE INSERT (FROM 10MM TO 20MM ) AND THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Joint Laxity

    MAUDE report 17868926 ↗
  • InjuryOct 2, 2023Device Appears to Trigger Rejection; Device Appears to Trigger Rejection

    AT ABOUT 2 YEARS AND 9 MONTHS FROM THE PRIMARY, THE PATIENT CAME IN DUE TO SIGNS OF AN INFECTION AND THE PATHOGEN IS UNKNOWN. THE SURGEON PERFORMED A WASHOUT AND REVISED THE LINER. THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Medical device site infection

    MAUDE report 17852169 ↗
  • InjuryAug 31, 2023Device Appears to Trigger Rejection; Device Appears to Trigger Rejection

    REVISION SURGERY AT ABOUT 2 YEARS AND 4 MONTHS POST PRIMARY FOR INFECTION. THE PATHOGEN IS UNKNOWN. THE SURGEON PERFORMED A WASHOUT AND REVISED THE LINER. THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Unspecified Infection

    MAUDE report 17659802 ↗
  • InjuryJul 20, 2023Device Appears to Trigger Rejection; Device Appears to Trigger Rejection

    AT ABOUT 6 MONTHS AND A HALF AFTER THE PRIMARY, THE PATIENT CAME IN DUE TO SIGNS OF AN INFECTION AND THE PATHOGEN IS UNKNOWN. THE SURGEON PERFORMED A WASHOUT AND REVISED THE LINER. THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Medical device site infection

    MAUDE report 17361647 ↗
  • InjuryApr 19, 2023Adverse Event Without Identified Device or Use Problem; Adverse Event Without Identified Device or Use Problem

    THE PATIENT CAME IN REPORTING INSTABILITY AND ANTERIOR KNEE PAIN AND THE CAUSE IS UNKNOWN. ABOUT 1 YEAR AND 4 MONTHS AFTER THE PRIMARY SURGERY, THE SURGEON REVISED THE INSERT (FROM 10 MM TO 13 MM)AND RESURFACED THE PATIENT'S NATURAL PATELLA. THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Joint Laxity

    MAUDE report 16769102 ↗
  • InjuryJan 13, 2023Device Appears to Trigger Rejection; Device Appears to Trigger Rejection

    AT ABOUT 2 WEEKS AFTER THE PRIMARY, REVISION SURGERY PERFORMED DUE TO INFECTION. THE SURGEON REVISED SUCCESSFULLY THE LINER (SAME SIZE).

    Patient problems: Medical device site infection

    MAUDE report 16156631 ↗
  • InjuryDec 29, 2022Adverse Event Without Identified Device or Use Problem; Adverse Event Without Identified Device or Use Problem

    THE PATIENT CAME IN REPORTING INSTABILITY DUE TO LAXITY. ABOUT 5 YEARS AND 5 MONTHS AFTER THE PRIMARY SURGERY, THE SURGEON REVISED THE 10MM POLY WITH A 14MM POLY AND THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Joint Laxity

    MAUDE report 16067301 ↗
  • InjuryNov 11, 2022Device Appears to Trigger Rejection; Device Appears to Trigger Rejection

    THE PATIENT CAME IN DUE TO SIGNS OF AN INFECTION AND THE PATHOGEN IS UNKNOWN. AT 3 YEARS AND 4 MONTHS AFTER THE PRIMARY SURGERY, THE SURGEON PERFORMED A WASHOUT AND REVISED THE POLY AND THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Unspecified Infection

    MAUDE report 15778664 ↗
  • InjurySep 9, 2022Device Appears to Trigger Rejection; Device Appears to Trigger Rejection

    REVISION PERFORMED 2 YEARS AND 1 MONTH AFTER THE PRIMARY SURGERY DUE TO INFECTION. ONLY INSERT REVISED.

    Patient problems: Unspecified Infection

    MAUDE report 15392101 ↗
  • InjuryAug 30, 2022Device Appears to Trigger Rejection; Device Appears to Trigger Rejection

    THE PATIENT CAME IN DUE TO SIGNS OF AN INFECTION AND THE PATHOGEN IS UNKNOWN. AT ABOUT 1 MONTH FROM PRIMARY SURGERY THE SURGEON PERFORMED A WASHOUT AND REVISED THE FEMUR AND POLY. THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Unspecified Infection

    MAUDE report 15320141 ↗
  • InjuryAug 2, 2022Adverse Event Without Identified Device or Use Problem

    THE PATIENT CAME IN DUE TO SIGNS OF AN INFECTION AND THE PATHOGEN IS UNKNOWN. AT 1 YEAR AND 5 MONTHS AFTER PRIMARY SURGERY, THE SURGEON PERFORMED A WASHOUT AND REVISED THE POLY AND THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Unspecified Infection

    MAUDE report 15147155 ↗
  • InjuryJan 27, 2022Appropriate Device Problem Term/Code Not Available

    THE PATIENT HAD A PRIMARY KNEE SURGERY ON (B)(6) 2019. SUBSEQUENTLY, ON (B)(6) 2021, THE PATIENT CAME IN REPORTING PATELLA PAIN. THE SURGEON RESURFACED THE PATIENT'S NATURAL PATELLA. NO IMPLANTS REVISED. PRESENTLY, ON (B)(6) 2021, THE PATIENT CAME IN DUE TO SIGNS OF INFECTION AND THE PATHOGEN IS UNKNOWN. THE SURGEON PERFORMED A WASHOUT AND SWAPPED THE POLY. THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Pain; Unspecified Infection

    MAUDE report 13365846 ↗
  • InjuryJan 12, 2022Appropriate Device Problem Term/Code Not Available

    REVISION SURGERY PERFORMED AT ABOUT 1 MONTH AFTER PRIMARY DUE TO INFECTION. THE LINER WAS SWAPPED SUCCESSFULLY.

    Patient problems: Unspecified Infection

    MAUDE report 13236220 ↗
  • InjuryDec 23, 2021Adverse Event Without Identified Device or Use Problem

    AT 2 WEEKS AFTER THE PRIMARY SURGERY, THE PATIENT CAME IN DUE TO SIGNS OF AN INFECTION AND THE PATHOGEN IS UNKNOWN. THE SURGEON PERFORMED A WASHOUT AND REVISED THE POLY AND THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Unspecified Infection

    MAUDE report 13078030 ↗
  • InjuryDec 14, 2021Appropriate Device Problem Term/Code Not Available

    AT 3 WEEKS AFTER THE PRIMARY SURGERY, THE PATIENT CAME IN DUE TO SIGNS OF AN INFECTION AND THE PATHOGEN IS UNKNOWN. THE SURGEON PERFORMED A WASHOUT AND REVISED THE POLY AND THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Unspecified Infection

    MAUDE report 13001101 ↗
  • InjuryDec 9, 2021Appropriate Device Problem Term/Code Not Available

    THE PATIENT CAME IN DUE TO SIGNS OF AN INFECTION AND THE PATHOGEN IS UNKNOWN. ABOUT 1 MONTH AFTER THE PRIMARY SURGERY, THE SURGEON PERFORMED A WASHOUT AND REVISED THE POLY AND THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Unspecified Infection

    MAUDE report 12968472 ↗
  • InjuryNov 25, 2021Appropriate Device Problem Term/Code Not Available

    AT 1 MONTH AFTER THE PRIMARY SURGERY, THE PATIENT CAME IN DUE TO SIGNS OF AN INFECTION AND THE PATHOGEN IS UNKNOWN. THE SURGEON PERFORMED A WASHOUT AND REVISED THE POLY AND THE SURGERY WAS COMPLETED SUCCESSFULLY.

    Patient problems: Unspecified Infection

    MAUDE report 12874315 ↗

Other Prosthesis, Knee, Patellofemorotibial, Semi-Constrained, Cemented, Polymer/Metal/Polymer devices

All Prosthesis, Knee, Patellofemorotibial, Semi-Constrained, Cemented, Polymer/Metal/Polymer devices →

Sources and updates

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