Degenerative Arthrititis of the Knee   The first four links are associated with this site. The AAOS link is to another site. History and Demographics Symptoms and Signs Diagnosis and Testing Common Treatment Options American Academy of Orthopedic Surgeons "Osteoarthritis of the Knee" Summary This AAOS link is more complicated and complete summary of osteoarthrititis of the knee.  Click on the blue links in the Table of Contents to navigate it, if you decide to check it out.