German designed and engineered to provide effective post-operative ROM for the knee and hip joint with minimal adjustments for ease of operation. The K4 features a true anatomical hip axis providing precise knee and hip motion. Lifting, transporting and storage are easy with the "grab easy" base design. Handheld programming of device parameters (i.e. extension, flexion, pause, force and speed). Four hidden programming features: warm-up, patient runtime, device runtime, full speed and motion. Wide, deep leg orthosis to accommodate larger patients. Removable power cord.