Get information, facts, and pictures about arthritis at Encyclopedia. Make research projects and school reports about arthritis easy with credible articles from our FREE, online encyclopedia and dictionary. Online dictionary and encyclopedia with pictures, facts, and videos. Arthritis pictures information and homework help with millions of articles in our FREE, online library.
Get information, facts, and pictures, about arthritis, at Encyclopedia. Enter the terms you wish to search for. COPYRIGHT 2002 The Gale Group Inc. Osteoarthritis and rheumatoid arthritis are common, and represent two distinct but related mechanisms of joint disease in old age: respectively, «wear and tear» and inflammation. The clinical features of arthritis.
Pain is the predominant symptom. Most pronounced on movement, it also occurs at rest, after exercise, and at night. The other main complaint is stiffness, occurring in the morning and after exercise, when it is termed «gelling. In inflammatory arthritis, morning stiffness exceeds thirty minutes. Crepitus, grating when joints are moved, characterizes osteoarthritis. Arthritis causes muscle weakness that may be profound.
Finally, there may be loss of movement due to joint swelling, muscle weakness, and deformities when joints are damaged. Osteoarthritis is common and, at older ages, becomes virtually universal. There are progressive changes in osteoarthritic cartilage. This leads to the production of degradative enzymes.