Born in Brooklyn, NY, and raised on Long Island, NY, Dr. Christensen attended New York University where he completed his B.S. degree. After graduation from college he served in the US Air Force completing flight training at Columbus AFB, MS. He then served as a C-141 pilot at McGuire AFB NJ completing a variety of worldwide missions with the 6th Airlift Squadron.

Dr. Christensen received his MD degree from the Uniformed Services University of the Health Sciences (USUHS) in Bethesda, MD. He completed his general surgery internship and orthopaedic surgery residency at Wilford Hall USAF Medical Center at Lackland AFB, San Antonio, TX. He then completed a fellowship in hand surgery at the Indiana Hand Center, Indianapolis, IN.

Dr. Christensen was then assigned to the Malcolm Grow USAF Medical Center, Andrews AFB, MD, where he served as Chairman of Orthopaedic Surgery. He also served as an Associate Professor of Surgery at USUHS and as a consultant in hand surgery at the Walter Reed Army Medical Center, Washington DC. His responsibilities included educating medical students, residents, and hand surgery fellows. During this assignment he deployed in support of Operation Desert Storm.

Dr. Christensen was then assigned to Wilford Hall USAF Medical Center where he completed a twenty four year Air Force career as the Chairman of the USAF Orthopaedic Residency Program and consultant to the Air Force Surgeon General for Orthopaedic Surgery.

Dr. Christensen joined the Orlando Orthopaedic Center in 1997. His practice includes surgery of the hand, elbow, and shoulder as well as general orthopaedic surgery. Throughout his career he has been involved in research and teaching with numerous publications and presentations to his credit. He is board certified by the American Board of Orthopaedic Surgery. He is a member of the American Society for Surgery of the Hand and is a fellow of the American Academy of Orthopaedic Surgery.