The Altoona Arthritis & Osteoporosis Center (AAOC) and the affiliated Altoona Center for Clinical Research (ACCR) provide leading edge health care through the diagnosis and treatment of patients suffering from Rheumatological and related disorders. From two locations in Altoona and Duncansville, the physicians and staff diagnose and treat patients suffering from arthritis and related disabling disorders of the joints, muscles and bones.