Very light 450g left knee stabilising splint made of aircraft-quality aluminium, which is specially designed for patients with meniscus and ligament injuries, mechanical erosion of articular cartilage or osteoarthritis and patellofemoral syndromes. It has an adaptable extension range limitation of 0, 10, 20, 20, 30 or 40 degrees, and a flexion range limitation of 45, 60, 75 or 90 degrees.