title: Foreword.
authors: Research & Technology Development, MEDTRONIC Spinal and Biologics, 2600 Sofamor Danek Drive, Memphis, TN 38132. E-mail address: frank.chan@mac.com.
authors: Frank W
authors: FW
authors: Chan
authors: Engineering Center for Orthopaedic Research Excellence (E-CORE), Departments of Bioengineering and Orthopaedic Surgery 5046 NI, MS 303, College of Engineering, University of Toledo, Toledo, OH 43606. E-mail address: Vijay.Goel@utoledo.edu.
authors: Vijay K
authors: VK
authors: Goel