“…Acute and chronic experiments with artificial fractures in animals (Lexer 1904, Ray et al 1967, Rhinelander et al 1968, Sun Shik Shim 1968, Wray 1964, Wray & Lynch 1959, which show increased blood flow and increased volume of the resistance and capacity section of the vascular bed in the fractured limb, justified the assumption that a fracture in man might likewise induce changes in the blood flow of individual compartments of the vascular bed of the limb. Apart from Giebel (1964) who found increased temperature of the skin in the area of the fracture as late as three weeks after the accident and Baumgartl et al ( 1958) who found by angiography a denser vascular pattern, enlarged blood vessels, and a faster flow of a contrasting substance in extremities with tibia1 fracture, we have not come across reports that deal specifically with haemodynamic changes in the muscle and skin vascular bed of limbs accompanying non-complicated fractures of the long bones in man.…”