One of the most common questions before knee replacement surgery is simply: how long will it last? It’s an important question, because a knee replacement is a big decision and most people want to know they’re making a lasting investment in their mobility.
What the evidence suggests
Modern total knee replacements are highly durable. Large long-term studies suggest that around 8 to 9 out of 10 knee replacements are still working well 15 to 20 years after surgery, and many last even longer. Implant materials and surgical techniques have improved steadily over the years. Individual outcomes vary, and your surgeon can give you the most relevant guidance for your situation.
What affects how long it lasts
- Activity level: high-impact activities place more stress on the implant than low-impact activities such as walking, cycling and swimming.
- Body weight: extra weight increases the load on the joint over time.
- Age at surgery: younger, more active patients may put more lifetime demand on the implant.
- Bone quality and general health.
- Surgical accuracy: precise alignment helps the implant wear evenly.
How to help your knee replacement last
Stay a healthy weight, keep active with low-impact exercise to maintain strong muscles around the joint, follow your rehabilitation plan, and attend follow-up reviews. If your knee ever becomes newly painful, swollen or unstable, have it checked promptly.
The bottom line
For most people, a knee replacement provides many years — often two decades or more — of reduced pain and improved movement. If it does eventually wear out, a revision operation is possible.
Thinking about knee replacement in Sharjah or Dubai? Book a consultation with Dr. Vignesh Karthik to discuss what to expect in your case.