Sydney Krantz had a good record at school at Prince Alfred College, and played for the school and afterwards for the University of Adelaide at cricket and football. He studied medicine in the University of Adelaide and graduated MB BS in 1927. After junior appointments in Adelaide he came to England for postgraduate training and passed the Conjoint Board examination and the FRCS in 1934. He then returned to Australia and was appointed clinical assistant in surgery at the Royal Adelaide Hospital in 1935. He obtained the FRACS in 1938. In 1945 Krantz joined the Army and was appointed to a Casualty Clearing Station in Malaya. As a prisoner of war he had a very difficult time in jungle camps, but later was moved to a base hospital near Bangkok where, in spite of being still handicapped by lack of adequate facilities, he carried out work of a high standard. After the war he was appointed honorary assistant surgeon to the Royal Adelaide Hospital in 1946, and honorary surgeon in 1953. He also served as specialist surgeon for the Repatriation Department with conspicuous success. In later life he enjoyed trout fishing, and had several years of happy married life, being survived by his wife and son. He died on 11 August 1973.