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. 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. On a removable stand. Now included is the 3B Smart Anatomy app. This app allows users to register their 3B item to extend the warranty plus free 1 year access to the 3B Smart Anatomy app which includes 23 Anatomy lectures, 117 interactive models and 39 quizzes.