87 patients, over 70 years old, who were suffering from knee osteoarthritis, and scheduled to undergo TKA were randomly assigned into one of two groups to receive either a minimally invasive computer assisted TKA (MICA-TKA) or a conventional TKA, with the goal of comparing the efficacy of the two methods. Results demonstrated that although both procedures resulted in similar leg alignment and component orientation; patients who received MICA-TKA were more likely to experience improved clinical results, such as knee society score, knee society function score, and range of motion at the 1 year follow-up.