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Mako Research

There have been over 50,000 operations done in the U.S. using Mako Robotic-Arm Assisted Technology. Studies looking at these patients have shown improved and more accurate alignment in hip and partial knee replacements. Dr. Nonweiler was the first orthopaedic surgeon in Central Oregon to perform a Mako partial knee replacement and is passionate about the advancement in quality and value for his patients. 

The WOMAC scoring system is a patient questionnaire given to patients before and after their operations. This is a scoring system from 0-100 in which 100 represents severe pain, stiffness, and functional limitations to the point of immobility and 0 represents a normal knee with no pain, stiffness or limitation. Dr. Nonweiler performs the WOMAC tests on all of his knee replacement patients to make sure that the surgeries he is performing are improving the patient’s quality of life and decreasing their pain. The average WOMAC score pre-operatively for partial knee replacement patients is 30.5, and six-months after surgery is reduced to 8. This represents a 71.7% improvement in pain and function after partial knee replacement. The goal is to increase this improvement even more using Mako. Typically, partial knee replacements will continue to improve for up to a year after surgery.

Research is an important part of medicine and is at the cutting edge of new technologies and treatments for patients to improve their quality of life. Dr. Nonweiler has partnered with Christine Pollard, PhD at the FORCE lab in a research study examining partial knee replacements using Mako technology as compared to conventional partial knee replacements. The goal of this study is to see the improvements in gait, function, and satisfaction of patients having partial knee replacements with Mako.