Osteoarthritis: Causes - MayoClinic.com - Mayo ClinicOsteoarthritis — Comprehensive overview covers symptoms, causes and treatment of osteoarthritis, including knee osteoarthritis.What Are the Causes of Osteo Arthritis? | eHow.comOsteoarthritis is one of the oldest and most common forms of arthritis. The Arthritis Foundation estimates some 27 million Americans live with this form of ...Osteoarthritis (Degenerative Arthritis) Causes, Diagnosis ...Osteoarthritis (OA or degenerative arthritis) is a joint disease caused by cartilage loss in a joint. Pain and stiffness are symptoms. Read about diagnosis and treatment.