Comparison between the 2-peg Type and the Conventional Type of Oxford Unicompartmental Knee Arthroplasty: The Clinical and Radiological Results of Short-term Follow-up

From February, 2007 to September, 50 patients who underwent minimal invasive unicompartmental knee arthroplasty for treating medial compartment osteoarthritis of the knee were enrolled. The conventional Oxford unicompartmental knee arthroplasty with a 1-peg design was performed in 26 patients, and these patients were 5 males and 21 females with a mean age of 65.1 (±6.9). New 2-peg design unicompartmental knee arthroplasty was performed in 24 patients and these patients were 5 males and 19 females with a mean age of 62.5 (±8.8). The clinical results, the range of motion and the radiologic results were compared between the preoperative period and postoperative 1 year.