We realize that the last word on the subject of prostheses for the head of the femur will not be written for many years. The advent of these revolutionary suggestions represent a general revolt against fusions, osteotomies, and other defeatist attempts to meet the problem of the painful, unstable fractured hip. The enthusiasm engendered in these patients and the apparent good early results obtained by this method suggest that old people who would otherwise he incapacitated may be given a stable, useful hip which will carry their weight for the remainder of their years.