How Outcomes Can Affect Cost: The Importance of Defining Patient-Relevant and Proxy Outcome Measurements

David L. Helfet, MD, MBChB, and Beate P. Hanson, MD, MPH

Dr. Helfet is Professor of Orthopaedic Surgery, Weill Medical College of Cornell University, New York, New York, and Director, Orthopaedic Trauma Service, the Hospital for Special Surgery and New York Presbyterian Hospital, New York, New York.

Dr. Hanson is Director, AO Clinical Investigation and Documentation, Dübendorf, Switzerland.