Aims: The purpose of this report is to present the short-term clinical performance of total knee arthroplasties performed with the Scorpio+ posteriorly stabilized mobile bearing knee. Methods: 100 Scorpio+ knees were implanted in 96 patients consecutively by the same surgeon and evaluated at one year of follow-up. All patients were assessed clinically using the IKS Score, Western Ontario McMaster Score (WOMAC), a chair rise evaluation6 and radiographically with long leg radiographs, standard A/P, lateral and patellar skyline views. Results: At one year of follow-up the average Range of Motion was 123° with an IKS Score averaging 191, an average knee score of 94, an average functional knee score of 97, and an average WOMAC score of 92. Furthermore, 95 out of 96 patients were able to arise from a chair without using their arms at 1 year of follow-up.

Radiographically no radiolucent lines were visible and all patellar components were centered. Conclusions: Patients with the Scorpio+ MBK demonstrated satisfactory clinical outcomes especially regarding overall stability, range of motion (average flexion 123°) and extensor mechanism function with 98% of patients being able to arise from a chair without the use of their arms at three months of follow-up.