Dr Barry J. Waldman is an internationally known specialist in Joint Replacement Surgery, concentrating on the hip, knee and shoulder. He has published numerous articles on joint replacement implants, techniques and complications. He has lectured all over the United States and Europe on many different topics in joint replacement and often tutors other doctors in joint replacement techniques. He is Director of the Center for Joint Preservation and Replacement at the renowned Rubin Institute for Advanced Orthopaedics in Baltimore, Maryland. Physicians from Japan, Korea, Sweden, Belgium, England and many other countries have travelled to Baltimore to observe him in surgery.