synovitis. close-up healthy joint and a joint with inflammation of the synovial membrane.

anatomy arthritis articular bone bones capsule cartilage close closeup comparison difference disease fibrous filling fluid hand health healthy human illustration inflammation injury joint knee leg liquid lubricates mean medical medicine membrane meniscus osteoarthritis pain patella rheumatoid sign signs spongy surgery swelling symptom symptoms synovial synovitis tendon tibia trauma vector