For starters, the Biomet partial knee is only FDA approved for the medial compartment. The fine print on the ads: "..The Oxford Partial Knee is intended for use in individuals with osteoarthritis or avascular necrosis limited to the medial compartment of the knee and is intended to be implanted with bone cement. The Oxford Knee is not indicated for use in the lateral compartment and patients with ligament deficiency.."
The early data (first 90 days post-op) from the Scotland study compared 50 Makoplasty patients to 50 patients receiving the Oxford partial knee. The results: w*w.makoplasty.c*m/assets/files/media/04_30_13_RRY_In_the_Hands_of_a_Robot.pdf