Developed with the assistance of John Chester M.D., this unique scientific Functional Skeleton model comes on a hanging stand and features a unique flexible assembly of all joints, allowing you to perform the individual movements in a nearly lifelike way. You can even demonstrate the complex motions of the upper extremity with this functional human skeleton. The shoulder blades rotate along when the arms are raised. Even the position of the radial and ulnar bones during inward and outward rotation of the lower arm can be graphically demonstrated. The human skeleton's flexible spine allows for natural movement (lateral inclination, flexion and extension, rotation). Even the restricted mobility of the iliosacral joint and the sacrococcygeal joint can be demonstrated. A great functional human skeleton model. First-class natural cast. Show complex motions of the upper extremity. Naturally rotating shoulder blades. Inward and outward rotation of radial and ulnar bonesBones of the hand are wire mounted to show natural position. Inward and outward rotation of radial and ulnar bonesBones of the hand are wire mounted to show natural position. Flexible spine performs all natural movements including, Lateral inclination, Flexion, Extension, Rotation. Extend and flex the knee joint to show how the patella moves. Flexibly mounted foot bones show natural mobility. 3-part assembled skull, Individually placed teeth. Almost realistic weight of the approx. 200 bones. Life size. Manual final assembly. Made of durable, unbreakable plastic. Supplied with stand and dust cover.