3D Model: "A High-resolution 3D Render Of A Fully Metallic Human Knee Joint. All Components, Including Femur, Tibia, Patella, And Joint Surfaces, Are Made Of Polished Chrome Or Titanium. The Bones Appear As Mechanical Or Anatomical Metal Structures With Realistic Surgical Implant Design. Emphasize The Artificial Textures, Smooth Metallic Surfaces, Joints, And Anatomical Proportions. No Skin, No Muscles, No Ligaments. Neutral Studio Background. Medical Sci-fi Style, Sharp Lighting And Reflections To Highlight The Full Metal Design."