Knee immobiliser with three pieces connected with Velcro closures, to easily adapt to variable contours of the knee, thigh and calves. This piece of Prim is designed with two back sheets that offer a better fit and comfort. It is complemented by six adjustable Velcro straps for better leg support. It has a circular opening in the knee for ventilation. It is latex-free and offers a precise immobilization of the knee in postoperative and post-traumatic periods. Recommended for relief of ligament injuries, meniscus and treatment of pheromopatellar syndrome. The latter is a pain caused by excessive pressure between the patella and the end of the femur that causes deterioration of the articular cartilage and irritation. It is also often formulated when there is knee replacement, arthroscopy, or postoperative complications. Use under specific medical formulation, for the suggested time.