Royalty free and rights managed images relating to osteoarthritis, a disease that results in loss of joint cartilage. Pads of cartilage in joints reduce the friction between the moving bones and help to lubricate the joint. The loss of cartilage causes pain and stiffness in the affected joints. Painkilling drugs can treat the pain and weight loss reduces pressure on the joint. Surgery can be performed to replace the joints in serious cases. Pictures and photographs include clinical and diagnostic images of patients and their affected joints.