Jack C. Debes, Ph.D. studied at the University of California San Diego in the department of Applied Mechanical Engineering Sciences where he earned his bachelor’s, master’s and doctorate degrees in bioengineering. He was then a post-doctoral fellow at the Hillenbrand Center for Biomedical Engineering and served as a Visiting Assistant Professor in the Department of Mechanical Engineering at Purdue University, focusing his research in the areas of soft tissue biomechanics and biomaterials for orthopedic and cardiovascular applications. In his pursuit for a better surgical material to anchor ligaments to bone, he became interested in hydroxyapatite—the naturally occurring mineral in bone. This led him to Interpore-Cross in Irvine, California where, as Research Manager, he developed products for the surgical repair of bones. Applications were applied to dentistry and orthopedics, especially in the spine. In order to develop replacement materials for the body, one must first understand the mechanical properties of the natural parts and what stresses are required to damage them. Dr. Debes met Ken Obenski in 1998 and became interested in applying his knowledge of biomechanics to injury analysis and accident reconstruction. Dr. Debes has published in the areas of accident reconstruction, biomechanics and biomaterials and serves as a consultant and expert witness at John Fiske Brown Associates, Inc. in Solana Beach, California.