Deluxe Functional Knee Joint, This high-quality deluxe functional knee joint model with ligaments shows the anatomy and possible physiological movements of the human knee joint. This model clearly demonstrates abductions, anteversion, retroversion
Double Cone & Plane, Defy Gravity As Cone Appears To Roll Upward. This Visual Demonstrator Of The Center Of Gravity Has A Wooden Frame With Diverging Rails And A Double-Ended Cone. The Cone Appears To Roll Up Actually The Center Of Mass Is Moving Down.