Denver Veterans Administration Hospital, the Department of Orthopaedics, University of Colorado Health Sciences Center, 4200 E. 9th Avenue, B202, Denver, Colorado, 80262, and the Department of Surgery, University of Cincinnati Medical Center, 231 Bethesda Avenue, Cincinnati, Ohio 45267.
*Attending Staff, Orthopaedic Surgery, Memorial Hospital, Penrose Hospital, and St. Francis Hospital, Colorado Springs, Colorado.
**Chief, Orthopedic Section, V.A. Medical Center, and Associate Professor, Department of Orthopedics, University of Colorado Health Sciences Center, Denver, Colorado.
†Associate Professor, Department of Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio.
Reprint requests to William G. Winter, M.D.
Received: December 30, 1980.