Affiliations

• ¹ Department of Orthopedics, Johns Hopkins University, and is Chair, Council on Research, Quality Assessment, & Technology, American Academy of Orthopaedic Surgeons, Baltimore, MD.
• ² New York University Hospital for Joint Diseases, and is President, American Academy of Orthopaedic Surgeons, New York, NY.
• ³ Bone and Joint Clinic of Houston, and is Chair, Guidelines and Technology Oversight Committee, American Academy of Orthopaedic Surgeons, Houston, TX.
• ⁴ Dr. Turkelson is Director, Research and Scientific Affairs Department, American Academy of Orthopaedic Surgeons, Rosemont, IL. Electronic address: turkelson@aaos.org.