
InstrumentAskornKnee Positioning Device OSSKARThe Oxford Stress System for Knee Arthroplasty Radiographs (OSSKAR) is a medical device for positioning the lower limbs for stress imaging of the knee. The device positions the lower limbs in an optimised valgus and varus stress situation, providing, optimal stress forces, reproducibility, better protection of the healthcare practitioners versus x-rays and more comfort to the patients.