LORENZ, 10 rents, Adolf, Austrian ortho pedic surgeon: b. 1854. He was graduated from the University of Vienna in 1880, and worked as an assistant under Theodor Billroth in Vienna. On the advice of the latter he be gan specialization in orthopedic surgery, and after years of study developed his so-called "bloodless" method of reducing congenital dis location of the hip joint. Before he developed his own method of operation he was one of the chief exponents of Hoffa's cutting method, which, however, he modified largely. His oper ation consists of the forcible stretching of all the soft parts about the hip until the head of the bone can be brought to the place where the socket should be (the acetabulum), and then holding it in that position and rotating the joint to secure it in the depression of the acetabulum. A plaster of Paris cast is worn by the patient from six to nine months after the operation. Dr. Lorenz has performed this
operation successfully in a large percentage of his cases; he demonstrated his method before the Medical Congress at Berlin in 1895; and has also given demonstrations in England and the United States. His visit to the United States (1902) aroused widespread interest and enthusiasm. He is now professor of ortho paedic surgery at the University of Vienna and a government councillor. His publications in clude (Orthopidie der Hiiftgelenks-Kontrak turen und Ankylosen' (1889) ; (Das instru mentelle kombinierte Redressement der Hiift (1898) ; die Heilung der angeborenen Hiiftgelenks-Verren kung durch unblutige Einrenkung und func tionelle Belastung' (1900) ; and with Saxl, in Medical Practice) (translated by L. C. P. Ritchie (New York 1913).