ROSA Robotic Surgery

Rosa Knee SystemROSA Knee System



You’re unique, and so is your individual anatomy. That’s why we offer advanced robotic surgery technology, the ROSA® Knee System, manufactured by Zimmer Biomet. ROSA, which stands for RObotic Surgical Assistant, is designed to help your specially trained surgeon tailor the placement of your knee implant with greater precision.

Who would benefit from ROSA total knee replacement?

Osteoarthritis, the most common form of arthritis, is a degenerative condition that results in the loss of joint cartilage (the cushioning between the bones). Patients with early to mid-stage osteoarthritis, who have symptoms such as knee pain, swelling and knee locking, and who have not responded to conservative treatments, are candidates for surgery with the ROSA Knee system.

Arthritic Knee Diagram

Arthritic Knee

Healthy Knee Diagram

Healthy Knee

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.

Before surgery

Your preoperative experience will be like that of most total knee patients. But, unlike traditional knee replacement methods, with ROSA Knee, a series of x-rays may be used to create a three-dimensional (3D) model of your knee anatomy. This 3D model will enable the surgeon to plan many specifics of your knee replacement prior to your surgery.

During surgery

The surgical procedure using ROSA Knee is similar to traditional total knee replacement, but with a robotic assistant. Your surgeon has been specially trained to use ROSA Knee in order to personalize the surgical approach for your unique anatomy. 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. During your procedure, ROSA Knee utilizes a camera and optical trackers attached to your leg to know exactly where your knee is in space. Think of it like a very detailed global positioning system (GPS) that you might use in your car. If your leg moves even a minute fraction of an inch, the robot can tell and adjusts accordingly. This helps ensure that the plan your surgeon put into place is executed as intended. Throughout your surgery, ROSA Knee provides your surgeon with data about your knee. This information, combined with your surgeon’s skill, helps them know how to position your implant based on your unique anatomy.

After surgery

Following surgery, you will be hospitalized based upon the recovery plan your surgeon decides is best for you. This hospitalization may range from one to three days. Recovery time varies, but most people should be able to drive after two weeks. Your surgeon will tell you when and what activities you can return to, and what activities to delay or avoid.

Robotic-Assisted Total Knee Replacement

with Muir Orthopaedic Specialists

Our knee surgeons are expertly trained on the ROSA system. To learn more about them, visit their profile page:

Elderly Couple Walking on Beach

Note: This is intended to provide an overview of knee replacement surgery. 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.