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When osteoarthritis affects just one compartment or section of the knee, your doctor may recommend a partial knee replacement, also referred to as Unicompartmental knee replacement. This option is less common then a total knee replacement and only available for a small number of cases, but may be beneficial to some. For a partial knee replacement all of the healthy parts of the knee will be left intact and only the damaged parts will be replaced. Advantages include a faster recovery time, less blood loss and less pain after the surgery. However, the potential for more surgery and unpredictable pain may also arise. Therefore patients should discuss their options with their doctors before making a decision.