A grant from € 656.892 has been awarded to Leendert Blankevoort, Orthopaedic Surgery Amsterdam UMC and his team for research on an innovative tool to diagnose loosening of a total knee arthroplasty. The Amsterdam UMC TKI grants for PPP projects are available to all Amsterdam UMC researchers and aim to perform more research projects in collaboration with companies in Public-Private Partnerships (PPP). The total knee arthroplasty (TKA) is an effective treatment for pain and functional impairment in severe knee osteoarthritis. The knee is replaced by a component in the upper leg and one in the lower leg. Some of the patients develop pain complaints over time during stressful activities. A new method was invented to measure the mobility of a TKA component. It is expected that the new method will give a correct diagnosis of loosening faster and cheaper. This prevents unnecessary surgeries and patients receive the correct treatment. The benefit for the patient is an effective treatment and thus a faster return to normal pain-free daily activities, work and recreation.