Ключевые слова: ache, aging, anatomy, arthritis, artificial, body, bone, cartilage, component, degenerative, diagnosis, disease, equipment, femur, fibula, help, human, hurt, implant, joint, joints, knee, leg, medical, medicine, metal, movement, operation, orthopaedic, orthopedic, osteoarthritis, pain, painful, patella, prosthesis, prosthetic, prothesis, replacement, skeletal, stages, steel, stiffness, surgeon, surgery, swelling, tendinitis, therapy, tibia, total, xray,