Enthusiasm about partial knee or unicompartmental replacement continues. Over the last 12 months, we have switched from using fixed bearing unicompartmental replacements to a mobile-bearing unicompartmental replacement. The Oxford partial knee replacement has a long track record of success and for patients who meet the indications, which are approximately 10% of people needing some form of knee replacement, this option has worked very well. The benefits of partial knee replacement include smaller soft tissue dissection, a slightly faster recovery, and a potentially more natural feeling knee. The downside of partial knee replacement is shorter survivorship when compared to total knee replacement. The good news is that if and when this fails revision to a knee replacement can be a relatively straight forward operation. If you have pain and decreased motion and decreased function as a result of arthritis in your knee you should discuss with your orthopedic surgeon whether or not you would be a candidate for partial knee replacement.