Discussion

104 Ryan P. Goff 1,2,3, Stephen G. Quallich1,2, Robert A. Buechler1,3, John C. Bischof1,4, Paul A. Iaizzo1,2, 1Department of Biomedical Engineering, University of Minnesota, 2Department of Surgery Engineering, University of Minnesota, 3Medtronic, Inc, Minneapolis, MN, USA, 4Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, USA.