Dr. Larsen Now Performing Robotic Assisted Unicompartmental Knee Replacements

Dr. Larsen Now Performing Robotic Assisted Unicompartmental Knee Replacements

Dr. Larsen is now using mako technology to perform robotic assisted unicompartmental knee replacement. This technique will help patients salvage the healthy bones in their knee while replacing the diseased bones.


What It Is

Mako can be used for partial knee replacement, which is a procedure designed to relieve the pain caused by joint degeneration due to osteoarthritis in one or two compartments of the knee. By selectively targeting the part of the knee damaged by OA, the surgeon can replace the diseased part of the knee while helping to spare the healthy bone and ligaments surrounding it. The Mako technology provides the surgeon with a patient-specific 3-D model to pre-plan the partial knee replacement. During surgery, the surgeon guides the Mako robotic-arm based on the patient-specific plan. This allows the surgeon to remove only the diseased bone, preserving healthy bone and soft tissue, and assists the surgeon in positioning the implant based on the patient’s anatomy.

How It Works

The procedure begins with a CT scan of the patient’s joint that is used to generate a 3-D virtual model of their unique anatomy. This virtual model is loaded into the Mako system software and is used to create a personalized pre-operative plan. In the operating room, the surgeon will use Mako to assist in performing the surgery based on the patient’s personalized pre-operative plan. The Mako system also allows the surgeon to make adjustments to the plan during surgery as needed. When the surgeon prepares the bone for the implant, the Mako system guides the surgeon within the pre-defined area and helps prevent the surgeon from moving outside the planned boundaries. This helps provide more accurate placement and alignment of the patient’s implant.


“Mako Partial Knee Replacement.” Mako Partial Knee Replacement | Stryker, patients.stryker.com/knee-replacement/procedures/mako-robotic-arm-assisted. Accessed 18 Aug. 2017.