SUBCUTANEOUS rupture of the tendo achillis is a rather rare accident. McClinton1 reported a group of 81,116 industrial accidents in 1940, among which there were no subcutaneous ruptures of the tendo achillis. Zollinger2 did not observe an instance of rupture of the tendo achillis in 50,000 cases. Malbec and Aguiló3 in 1935 were able to collect only 86 cases from the world's literature. Since that date, after a careful search, we have been able to find 14 more, six in foreign journals and eight in those printed in English. In the 100 reports, to which we are adding two, three references were found to bilateral subcutaneous rupture of the tendo achillis. In 1930 König4 reported a case involving a high jumper and quoted Petit, who observed a case in 1722. Seiffert5 reported the third case in 1931. In this paper an attempt will be made