Life-size pathological hand model - shows rheumatoid arthritis for medical teaching.full size right hand with cutaway views to reveal effects of steoarthritis including osteophytes (bone spurs), heberden's nodes bouchard's nodes, and swan neck deformity of the thumb. shows other anatomy affected by osteoarthritis: ligaments, tendons, muscle, and cartilage. for comparison, normal anatomy is also shown.product size: 16 * 13 * 23cmproduct weight: 460gproduct material: pvcsingle product packaging size/weight: 18.5 * 14.5 * 8cm/0.5kgpackage includes: 1 piece of hand bone joint modelnotes:1. due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture. thank you!2. due to manual measurement, please allow 2-5 cm measurement error3. if you have any questions, please feel free to contact us.thank you for visiting our store, have a great shopping experience!