Dr. O’Keefe is an orthopaedic surgeon specializing in musculoskeletal oncology and adult reconstructive surgery of the hip and knee. Dr. O’Keefe received his medical degree from Harvard Medical School in 1985 and completed a surgical internship from Harvard Medical School/New England Deaconess Hospital in 1986. He served as an Instructor/Fellow of Research at the University of Rochester, School of Medicine and Dentistry until 1988, where he then went on to complete an orthopaedic surgery residency at the University of Rochester Medical Center in 1992. He then completed a Fellowship in Orthopaedic Oncology from the Massachusetts General Hospital in 1993. In 2000, he pursued a doctorate degree in biochemistry and biophysics from the University of Rochester, School of Medicine and Dentistry. Prior to arriving at Washington University School of Medicine, Dr. O’Keefe served as the Marjorie Strong Wehle Professor and the Chairman of the Department of Orthopaedics and Rehabilitation at the University of Rochester School of Medicine and Dentistry in Rochester, NY. Dr. O’Keefe is a member of the American Academy of Orthopaedic Surgeons, American Association for the Advancement of Science, American Board of Orthopaedic Surgeons, American Orthopaedic Association, American Society of Bone and Mineral Research, Association of American Physicians, Association of Osteobiology, Musculoskeletal Tumor Society, Orthopaedic Research Society, and Siteman Cancer Center.