SAN FRANCISCO, CA--(Marketwire - March 07, 2008) - Orthopaedic surgeon John T. Gill, MD, was elected Chair of the Board of Councilors (BOC) of the American Academy of Orthopaedic Surgeons (AAOS) at the organization's 75th Annual Meeting, held Mar. 5-9, 2008, at Moscone Center in San Francisco. He will also serve on the Academy's Board of Directors.