This functional knee joint model provides a graphic demonstration of the anatomy and mechanics of the knee joint, allowing better doctor-patient or teacher-student understanding of the anatomy of the knee joint. Use this life-size and fully flexible knee joint to demonstrate abduction, anteversion, retroversion, internal/external rotation, and much more. The knee joint consists of portion of femur, tibia and portion of fibula; also includes meniscus, patella with quadriceps tendon and joint ligaments, including the ACL and PCL. This high quality anatomy model of a Functional Knee Joint is delivered on removable stand. Now included with all 3B Scientific Anatomy models is the 3B Smart Anatomy app. This app allows users to register their 3B item to extend the warranty from 3 to 5 years plus free 1 year access to the 3B Smart Anatomy app which includes 23 Anatomy lectures, 117 interactive models and 39 quizzes.