4Stage Mini Knee Joint Model Set A set of four minisize anatomical knee models that illustrate the progressive stages of osteoarthritis. Each model highlights specific structural changes so students and instructors can compare healthy and diseased conditions side by side. The set includes an information card with labeled features and a plastic display base for tabletop presentation. Key benefits Clear visual progression: Four distinct models show degenerative joint disease, erosion of articular cartilage, progression of degeneration, and osteophyte formation for stepbystep comparison. Effective teaching aid: Serves as a compact, durable alternative to large posters for classroom demonstrations, study sessions, and handson review. Durable and low maintenance: Made of PVC that is odorless, washable, corrosionresistant, and resistant to breakage for repeated handling. Ready to display: Includes a quality plastic base and an information card to identify lesions and anatomical landmarks quickly. Compact and portable: Minisize models are easy to transport between classrooms, clinics, and study areas. Product attributes Contents: Four mini knee models, one information card, one display base. Function: Demonstrates anatomy changes related to degenerative joint disease and common lesion features such as cartilage erosion and osteophytes. Material: PVC models with a plastic base; washable and corrosionresistant. Size: Miniature scale for tabletop use and closeup inspection. Practical use scenarios Classroom demonstration: Use during anatomy or pathology lectures to compare stages and reinforce learning with a handson example. Clinical education: Support patient or caregiver explanations by showing visible changes without making treatment claims. Study and review: Ideal for selfstudy, small group practice, or as a reference on a desk in labs and training centers. This model set provides a reliable, easytouse visual resource for teaching and learning knee joint anatomy and the structural progression of degenerative changes.