ROSA® Knee robotic technology

Understanding robotic technology for total knee replacement

You’re unique, and so is your individual anatomy. That’s why Zimmer Biomet and Lexington Clinic Orthopedics – Sports Medicine offers ROSA® Knee robotic technology. ROSA, (Robotic Surgical Assistant) is designed to help your specially trained surgeon tailor the placement of your knee implant just for you. 

ROSA KNEE Robotic Technology
Getting a precise knee implant fit is important to your comfort and overall experience following knee replacement surgery. ROSA Knee uses data collected before and during surgery to inform your surgeon of many details related to your unique anatomy that may affect your implant fit. By using this data to make more informed decisions, your surgeon is able to plan for and carry out a personalized surgery based upon your individual needs.

Arthritis in the knee joint
The knee is a hinge joint formed by the tibia (shinbone), femur (thighbone), and patella (kneecap).  The ends of the bones in the knee joint are covered with cartilage, a tough, lubricating tissue that helps cushion the bones during movement.

Tharun Karthikeyan

Board-certified in orthopedic surgery, is specially trained in using ROSA Knee, providing a solution for qualifying patients to personalize the approach to total knee replacement. He provides services in adult hip and knee reconstruction, including primary, complex and revision hip and knee replacement. 

Contact Dr. Tharun Karthikeyan at Lexington Clinic Orthopedics – Sports Medicine today to find out whether this treatment is right for you. Call (859) ‍258-8575.‍

Watch Dr. Karthikeyan's interview on WKYT's Everyday Kentucky.
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Osteoarthritis, the most common form of arthritis, is a wear-and-tear condition that destroys joint cartilage and bone. It typically develops after years of constant motion and pressure in the joints.

As the cartilage continues to wear away, the joint becomes increasingly painful and difficult to move.  If conservative treatment options fail to provide relief, your surgeon may recommend total knee replacement using ROSA Knee robotic technology.

Before Surgery and During Surgery

The ROSA Knee will take a series of x-rays so that the surgeon can plan the many specifics of your knee replacement prior to surgery. During your procedure, the specially-trained physician will prompt ROSA to utilize its camera and optical trackers attached to your leg to ensure that the plan your surgeon put into place is executed as intended.

It’s important to understand that the robot does not operate on its own. That means it does not move unless your surgeon prompts it to. Your surgeon is still in the operating room the entire time and is making all of the decisions throughout your surgery.

Watch the video below to learn how ROSA® Knee works.

“For everyone involved – surgeons, medical staff and, most importantly, patients – ROSA Knee has the potential to offer a number of key benefits and advantages,” Tharun Karthikeyan, MD said. “I know the decision to have joint replacement is often a difficult one for patients to make, and I believe these robotically-assisted technologies have the potential to make it an easier one moving forward.”

The decision to have surgery is sometimes difficult. Consulting with Dr. Karthikeyan and reading provided literature will help you understand the ROSA Knee System so that you can make the best decision for yourself.

Important Note: This information is intended to provide an overview of knee replacement surgery and should be reviewed with your doctor. It does not include all of the information needed to determine eligibility for knee replacement or for the proper use and care of artificial knee replacements. Please consult your surgeon for more information. Information may also be obtained by calling the toll-free number or visiting the website. The toll-free number can also be used to obtain complete product contraindications, warnings, precautions, and possible adverse effects. Individual results may vary. Your results will depend on your personal circumstances. How long a knee replacement will last varies from patient to patient. It depends on many factors, such as the patient’s physical condition, activity level and body weight, and the surgical technique. Replacement joints are not as strong or durable as a natural, healthy joint, and there is no guarantee that an artificial joint will last the rest of a patient’s life. All knee replacements may need to be replaced at some point.
This device is available only on the order of a physician. 
To learn more about Zimmer Biomet joint replacements, obtain helpful information for patients and caregivers, or for assistance in finding a surgeon familiar with our products and surgical techniques, call toll-free at 800-447-5633 or visit

Lexington Clinic South Broadway


Address: 1221 South Broadway, Lexington, KY 40504

Telephone: +1 (859) 258-4000

Hours: Mon - Fri: 8:00 a.m. - 5:00 p.m.

Interested candidates please contact:
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Alexis Sturgill
Onboarding & Recruitment Specialist
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Tammy Spivey, PHR, SHRM-CP
Onboarding &
Recruitment Specialist
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