Abstract
The administration of irradiated ergosterol in normal fracture patients did not alter the metabolism apart from a slight increase in urinary Ca. Irradiated ergosterol was beneficial in certain types of pathological fractures and abnormal bone conditions. A catabolic loss of S, N and P resulted from injury to tissue other than bone. The N.P.N. and the inorganic P of the blood were not increased at the time of the increased catabolism in cases of fracture and non-bony injury.