For years, the treatment of arthritis was considered to be total knee replacement; however the interest for preservation of intact part of joints is gaining importance. Partial knee implant designs have also progressed in recent years and are getting more predictive. This treatment comes with certain valuable benefits. Most importantly the natural ligaments are not sacrificed and hence the function of the near is nearly normal. The joint movement and bending also is like the normal knee and proprioception (sense of knee position) is preserved. Also it is a bone preserving method and hence further procedures needed after wear are much easier than patient with total knee replacement.