Meet Our Team. The physicians at Altoona Arthritis & Osteoporosis Center have over 75 years of experience in the field of Rheumatology and have participated in over 1000 clinical research studies.. AAOC understands the fear and anxiety that often accompany the pain of a rheumatic disease. You will find the staff truly enjoys helping patients achieve a higher quality of living through treatment.Contact Us‧Patient Forms - Altoonaarthritis.Com‧Overview‧Our Commitment & Mission.