Dr. Simon Turner is currently a professor in the Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Ft. Collins, CO. He received his veterinary degree from the University of Melbourne, Australia and his MS degree at The Ohio State University. He is a Diplomate of the American College of Veterinary Surgeons. He has taught Large Animal Surgery at the University of Saskatchewan in Canada and has been at Colorado State University since 1977. Simon spent much of his career operating on horses and has co-authored three text books in that field. In 1989, after returning from a sabbatical appointment at The Laboratory for Experimental Surgery, Davos, Switzerland, he formed a laboratory for comparative orthopaedic research at Colorado State. Simon's research began with characterization of the aged ovariectomized ewe as a model for postmenopausal conditions such as osteoporosis, heart disease, hot flashes and arthritis. He has looked at new therapeutic agents for osteoporosis including selective estrogen receptor modulators (SERM's). Other areas of research using the sheep have included investigation into new methods of enhancement of implant fixation in normal and osteoporotic bone, anterior and posterior spine fusion with various implants, and, fracture healing. His research is not limited to bony tissues. He has evaluated implants to secure meniscal tears, meniscal transplantation and tendon reattachment to bone. He has evaluated several hemostatic agents to reduce bleeding from both bone, liver, spleen and kidney using sheep.