Latest knee replacement technology | Louisville, Ky.Norton Healthcare

Published: February 20, 2025

Estimated reading time: 3 minutes

While the basic goal of knee replacement surgery hasn’t changed in 50 years — reducing pain and helping you move better — new technology is making the procedure more precise and personalized than ever, according to Cyna Khalily, M.D., medical director of orthopedic surgery and adult reconstructive surgery at Norton Orthopedic Institute.

New knee replacement technology is allowing surgeons to create a more natural-feeling joint, while getting you home sooner and started on your recovery. 

A total knee replacement, sometimes called total knee arthroplasty, may be necessary after arthritis has developed to the point that too much cartilage has worn away and you have bone-on-bone contact causing knee pain. A partial knee replacement describes having just one side of the knee joint replaced, often to treat an injury.

“While the aim of knee replacement surgery remains unchanged — relieving pain and helping patients return to an active life — today’s technology makes the procedure more precise and personalized,” Dr. Khalily said. “We still replace the worn joint surfaces, but now use advanced robotics, custom 3D-printed implants and smart sensors to optimize each patient’s results.”

Dr. Khalily was the first person in the world to perform a Food and Drug Administration-approved cementless total knee replacement with the CORI robotic-assisted system.

Today’s advances

Robotic-assisted surgery

Think of it like GPS for your surgeon. Using real-time imaging and computer guidance, surgeons now can plan and perform total knee replacement surgery with greater precision, tailored to your exact knee anatomy. This helps ensure better alignment and implant positioning, potentially improving longer-lasting results.

3D printed custom implants

Just like getting a custom-fitted suit, your knee replacement now can be made specifically for you. Using 3D printing, surgeons can create implants that match your knee’s unique shape and size. This is especially helpful for complex cases or revision surgery.

Smart knee implants

These high-tech implants contain tiny sensors that track how your new knee is working. Your doctor can monitor your recovery remotely, adjust your rehabilitation plan as needed and spot potential issues early. This means fewer in-person follow-up visits and more personalized recovery care.

On the horizon

Augmented reality

Surgeons are beginning to use augmented reality technology — similar to what’s used in some video games — to see detailed 3D images of your knee during surgery. This technology helps them place implants with even greater accuracy.

More outpatient surgeries

Thanks to these advances and better pain management, many knee replacements are now done as outpatient procedures. This means you may go home the same day as your surgery. By 2026, more than half of all shoulder, knee and hip replacement are expected to be outpatient procedures.