Ian James MacQueen was an orthopedic surgeon in Martinsburg, West Virginia and then Palm Beach Gardens and Jupiter, Florida. He was born on 28 September 1920 in London, the son of John Gillies MacQueen, a manganese and iron ore broker, and Doris Olivia MacQueen née Roberts, an actress at the Gaiety Theatre, London. He attended the Stationers’ Company School in London. During the Second World War, he served with the London Fire Service and attended the burning of the Hunterian Museum and Law Courts in an air raid during the night of 10 May 1941. From 1940 to 1942, he also studied sciences at Birkbeck College, London University. After the war, he studied at Guy’s Hospital Medical School, winning a junior proficiency prize in 1947 and qualifying in 1950. He was a house physician in Lowestoft and a senior house surgeon at Worthing General Hospital. In 1952, he was a senior house officer at the Royal National Orthopaedic Hospital. He then became a junior lecturer in anatomy at the University of Sheffield. From 1954 to 1955, he was a registrar on the professorial unit at the Nuffield Orthopaedic Centre, Wingfield-Morris Orthopaedic Hospital, Oxford. He was then a registrar at Heatherwood Orthopaedic Hospital, Ascot and subsequently a resident surgical officer in general surgery in Tunbridge Wells. From 1957 to 1958 he was a tutor in orthopaedic surgery at the University of Bristol and a resident surgical officer at the Winford Orthopaedic Hospital, Bristol. Also in 1958, he was awarded a World Health Organization travelling fellowship to Norway, Sweden, Denmark and Germany. He then spent four years (1959 to 1963) as a senior orthopaedic registrar at Manchester Royal Infirmary. In 1963, he was appointed as a senior consultant orthopaedic surgeon in charge of accident and emergency services at the Mayday University Hospital and for the Croydon Area Health Authority. In February 1978, he emigrated to the United States, where he was in private practice in Martinsburg, West Virginia. From 1984, he was an orthopaedic surgeon in Palm Beach Gardens and Jupiter, Florida. He retired in September 1995. He was made a freeman of the Worshipful Company of Stationers and Newspaper Makers in 1990 and in 1996 became a freeman of the City of London. He had a lifelong interest in physical culture; he was a swimmer, diver, weightlifter and hand-balancer. From 1990, he was president of the Oscar Heidenstam Memorial Foundation, an organisation that honours and assists disabled physical culturalists, gymnasts and ballet dancers. In March 1946, he married Dorothy Maud Culver. They had a son, Jason, and five daughters – Jane, Anne, Amanda, Sarah and Fiona. He was widowed in 1982 and married Honora Dawn Matthews, a physiotherapist, in 1985. He died on 28 July 2012 at his home in Martinsburg. He was 91.