Kyriacos A. Athanasiou is a distinguished professor and the Child Family Professor in the Department of Biomedical Engineering and the Department of Orthopaedic Surgery at the University of California, Davis. Eric M. Darling is an associate professor of medical science, orthopaedics, and engineering in the Department of Molecular Pharmacology, Physiology, and Biotechnology at Brown University. Jerry C. Hu is a Senior Research Scientist in the Department of Biomedical Engineering at the University of California, Davis.