“…This means that the ratio between the growth from the proximal and distal growth plates of a long bone varies with age (Payton 1932, Brash 1934, Gill and Abbott 1942, as it does for the end regions of the long bone (Ollier 1867, Brodin 1955, Elo 1960. In a large number of investigations it has, however, been assumed that this ratio is constant throughout the growth period (Digby 1916, Bergmann 1929, Phemister 1933, 1935, Wilson and Thompson 1939, Blomqvist and Rudstroni 1943, Green and Anderson 1947, Heikel 1960, Salter and Harris 1963, Anderson et al 1963, Guldhammer 1963, Nordentoft 1964, Ryoppy 1965.…”