Dr. William Barrett is board certified and fellowship-trained orthopedic surgeon who specializes in primary and revision hip and knee replacement. He performs over 500 joint replacement procedures annually. He is actively involved in clinical research on Anterior Approach Total Hip Replacement (THR) and Total Knee Replacement (TKR). His research department maintains a prospective joint registry, tracking the outcomes of their hip and knee replacement patients. As a nationally recognized joint replacement surgeon, Dr. Barrett lectures globally on hip and knee replacement topics. He has been active in the American Academy of Orthopaedic Surgeons Continuing Medical Education programs. He is the chairman of the Education Committee for the American Association of Hip and Knee Surgeons (AAHKS). Dr. Barrett has been and continues to be, involved in the design of some of the most commonly used hip and knee replacement systems. He is the medical director for the Joint Center at Valley Medical Center in Renton, WA, recognized by HealthGrades as one of America's 100 best hospitals for Joint Replacement 2014 -2016. The Center for Medical Services ranks Valley Medical Center one of the Top 95 centers for joint replacement in the U.S., and the only recognized center in Washington state. He is president of the VOA Research Foundation and practices at the Proliance Orthopedic Associates Renton office. Dr. Barrett was named a top doctor for joint replacement from 2007-2016 by Seattle Magazine and Seattle Metropolitan Magazine. Dr. Barrett has published book chapters and medical journal articles, and presented to the global medical community: