The right elbow joint model features an exclusive detachable ligament system allows years of use and individual viewing of each bone, ligament and cartilage. This model demonstrates all natural movements of the upper arm and forearm such as extension and flexion of the upper arm and forearm and rotation movement of the radius. The ligaments are made of a sturdy elastic material. Can be removed from stand. Size: 16" x 8" x 9". Somso Modelle.