Modern knee replacement implants are designed to last 15 to 20 years or more in many patients, though this depends on several factors including the patient's age, body weight, activity level, the quality of the bone at the time of surgery, and adherence to post-operative rehabilitation and follow-up care. Robotic assistance with implant positioning may help optimise long-term outcomes, though this depends on the individual case.
Implant longevity is not a fixed number. A younger or more active patient may place greater demand on the implant than an older patient with lower activity levels. Excess body weight increases the mechanical load on the joint. Regular follow-up with the surgeon allows early identification of any changes before they become significant problems. Patients should discuss their specific circumstances and expectations with their surgeon before surgery.
