osteoarthritis. arthritis of a knee joint

arthritis osteoarthritis inflammation pain knee anatomy joint disease bone cartilage synovial capsule femur tibia fibula surgery osteoporosis skeletal arthritic joints painful age obesity osteophyte degeneration treatment orthopedic rheumatism erosion chronic therapy autoimmune acute meniscus patellar vector tear kneecap bursa extension rehabilitation synovitis damage deformity analysis corticosteroid replacement protection