Orrin M. Troum, MD FACR

Orrin M. Troum, MD FACR is a Clinical Professor of Medicine, Division of Rheumatology, at the Keck School of Medicine, University of Southern California. Dr. Troum received his B.S. Degree in Biology at Tulane University, New Orleans, LA. He attended the Autonomous University of Guadalajara, School of Medicine and the College of Medicine and Dentistry of New Jersey prior to completing his internship/residency in Internal Medicine and fellowship in Rheumatology at Los Angeles County/USC Medical Center. He is Board Certified in Internal Medicine and Rheumatology and is also a Certified Clinical Densitometrist by the International Society of Clinical Densitometry.

Dr Troum pioneered the use of extremity MRI in the evaluation, clinical decision process and outcome of patients with inflammatory arthritis. He is a founding member and Membership Chairman of the International Society of Extremity MRI in Rheumatology. Dr. Troum is a founding fellow of the American College of Rheumatology and a member of the Southern California Rheumatology Society, California Rheumatology Alliance, Philadelphia Rheumatism Society, the American Society of Bone and Mineral Research and Osteoarthritis and Research Society International.

He served as a full-time faculty member (Acting Clinical Director of Rheumatology) at LAC/USC prior to starting his rheumatology private practice in 1986. He was a member of the Board of Directors (2003-2007) and is currently serving on the Medical and Scientific Committee of the Arthritis Foundation's largest US chapter in Southern California. He was past president of the Southern California Rheumatology Society, 1999-2000.

Dr. Troum is the founder and Director of Research at the Westside Arthritis & Metabolism Center in Santa Monica, CA. His clinical trial research focuses on rheumatoid arthritis, other inflammatory arthropathies, osteoarthritis, osteoporosis and metabolic disorders.

Recent Presentations or Publications:

Troum OM. Newer Imaging Technology For The Diagnosis Of Early Rheumatoid Arthritis And Monitoring Of Inflammation And Joint Damage: Journal of Clinical Rheumatology, Volume 13, Number 5, October 2007

Fleischmann R, Schiff M, Keystone E, Mease P, Troum OM, Weinblatt M: A New Composite Measure for Assessing RA Activity in Clinical Practice: Poster Presentation: ACR Annual Scientific Meeting: November 2007, Boston, MA

Furst D, Gaylis N, Bray V, Olech E, Yocum D, Ritter J, Weisman M, Wallace D J, Crues JV III, Khanna D, Yeilding N, Callegari P, Visvanathan S, Rojas J, Hegedus R, George L, Mamun K, Glimer K, Troum OM. Open-label, pilot protocol of patients with rheumatoid arthritis who switch to infliximab after an incomplete response to etanercept: The Opposite Study, Ann Rheum Dis 2007;66:893-899

Chen T. S, Crues JV, Troum OM. Detection of Changes in Size of Erosions in Rheumatoid Arthritis Using High Resolution In-Office MRI. Journal of Rheumatology 33:10: 1957-1967, 2006

Furst D.E., Yocum D, Weisman M, Troum OM, Bray V, Wallace D, Gaylis N, Ritter J, Yielding N, Gilmer D: Infliximab Provides Additional Clinical and Radiographic Benefits in RA Patients Who Have an Inadequate Response to Etanercept: Poster presentation: EULAR Annual Scientific Meeting. June 2005 Vienna, Austria.

Crues JV, Shellock FG, Dardashti S, James T, Troum OM. Identification of wrist and MCP joint erosions using a portable extremity MR system compared to conventional x-ray. Journal of Rheumatology, 31:676-685, 2004