In this study, doctors are checking if a special part, called the Canary canturioTM te Tibial Extension, is safe and works well in knee surgeries. This part is used in a total knee arthroplasty (TKA), which means replacing a knee joint. The study compares two groups: one using the new part and one using a regular knee system. They will look for any safety issues like bone fractures or loose parts in the knee within 5 years. They will also check how well patients can walk and their pain levels.

Participants must be 18 years or older and have severe knee pain due to osteoarthritis. Some people cannot join, like those with certain bone conditions or mental health issues. Participants will need to use a computer with internet at home for this study.

• The study will last up to 5 years.
• Participants must have regular check-ups and provide walking data.
• There may be risks like bone fractures or device issues.