"William Gissane (1898-1981), an Australian by birth, was a professor of orthopaedics, and is remembered as a pioneer of traumatology. He was the first clinical director of the Birmingham Accident Hospital, regarded as the first dedicated trauma centre in the world 3."
"The normal Gissane angle is usually between 120° and 145° 1. There is a relatively wide variation in the size of the angle between individuals but there is relatively little difference between the left and right feet of individual patients 2."