Osteoarthritis
Osteoarthritis results from breakdown of joint cartilage and underlying bone, and the most common symptoms are joint pain and stiffness. Usually the symptoms progress slowly over years and some of the symptoms may include joint swelling, decreased range of motion, and weakness or numbness of the arms and legs. The most commonly involved joints are the two near the ends of the fingers and the joint at the base of the thumbs, the knee and hip joints, and the joints of the neck and lower back. The symptoms can interfere with work and normal daily activities. Unlike some other types of arthritis, only the joints, not internal organs, are affected.