The knee joint model represents an authentic reproduction of articulation. It uses screw connections whenever it is possible. It uses strong, flexible and durable plastic for the ligaments. The model, made from SOMSO-Plast, is a natural size. It is able to flex and extend and features outer and inner rotation. It can be removed from the base and is easy to handle off the base. The model stands at 34 cm today. It has a width and depth of 18 cm and weighs 1 kg.