Knee Brace | M.4s® PCL Dynamic4 point rigid brace for treating injuries of the posterior cruciate ligament M. 4s PCL dynamic is a functional knee orthosis. The product allows the conservative or postoperative treatment of patients with a (partial) rupture of the posterior cruciate ligament. By actively exerting a force via the PCL protection pad the tibia is holding in the desired position Safe collateral stabilisation by rigid frame Extension and flexion limitation protects