Figure 1 © Maya E. Habecker
Figures 2A © Henry Vandyke Carter, Wikimedia Commons; B, C © Ralf Stephan, Wikimedia Commons
Figures 3, 4, 5 © Bradford C. Berk and Shehanaz Ellika
Figure 6 © David Goldstein, open access
Figures 7A © Deutsche Fotothek, Wikimedia Commons; B © Susanne Pallo, URMC Communications
Figure 8 © Scott Medical
Figures 9, 10, 22, 32, 33, 38, Table 1 © Bradford C. Berk
Figure 11 © Farcaster, Wikimedia Commons
Figure 12 © Yeza, Wikimedia Commons
Figures 13A © Blausen.com; B © Mconnell, Wikimedia Commons
Figures 14, 16, 17, 18A, B adapted by Michal Shaposhnikov and Bradford C. Berk
Figure 15 public domain, Wikimedia Commons
Figures 19A, B © BruceBlaus, Wikimedia Commons
Figure 20 © Ucomfor, adapted by Michal Shaposhnikov and Bradford C. Berk
Figure 21 © William Crochot, Wikimedia Commons
Figures 23, 24 Wikipedia Commons
Figure 25 © Nanoxyde, Wikimedia Commons
Figure 26 © Neuromotion Physiotherapy
Figure 27 © Christopher & Dana Reeve Foundation
Figures 28A, B © Hocoma
Figures 29A, B © ReWalk
Figure 30 © Nick Yudin, Wikimedia Commons, adapted by Michal Shaposhnikov and Bradford C. Berk
Figure 31 © Open Access Resources
Figure 34 © Reharo Corporation
Figure 35 © EazyHold, Mellin Works, LLC
Figure 36 © Dining with Dignity
Figure 37 © GF Health Products, Inc.
Table 2 adapted by Bradford C. Berk from C. T. January, L. S. Wann, H. Calkins, L.Y. Chen, et al
Table 3 adapted by Bradford C. Berk from Steven Kirshblum and Denise Campagnolo