OA: Clinical Features Pain prime reason for medical care and leading cause of disability in seniors Progressive loss of articular cartilage leading to joint pain and movement restrictions Joint pain in one or more joints Experienced with activity, relieved by rest Stiffness, swelling, deformity, loss of function Morning stiffness common, usually for < 1 hr. If joints become unstable, pain often more prominent, even at rest Steigelfest, E. Osteoarthritis. eMedicine, 2005. Available from www.emedicine.com/med/topic1682.htm Prevalence of disabilities and associated health conditions among adults—United States 1999. MMWR Morb Mortal Wkly Rep 2001;50:120-125.