Information in this section pertains to all global PEN® partners except where country flags are
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Disease Etiology
Osteoarthritis (OA) (also called degenerative arthritis, degenerative joint disease, osteoarthrosis, or hypertrophic osteoarthritis) is a chronic disorder occurring as a result of damage to the cartilage and surrounding tissues (1). It is characterized by joint pain and stiffness, and decreased function. Any synovial joint can be affected, but knees, hips and small hand joints are the most common sites (2).
Osteoarthritis is caused by tissue damage, occurring due to