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. Author manuscript; available in PMC: 2014 Aug 2.
Published in final edited form as: Clin Biomech (Bristol). 2013 Aug 2;28(7):731–735. doi: 10.1016/j.clinbiomech.2013.07.006

Figure 4. Representative Helical Axis Data of Healthy, Pre, and Post-Treatment overlaid on Skeleton with Arrows Identifying Folds.

Figure 4

(A) HA vectors from an asymptomatic subject displaying no folds. (B) HA vectors from a symptomatic subject pre-treatment displaying 5 folds. (C) HA vectors from the same symptomatic subject post-treatment. Folds decreased along with pain and NDI. Videos of each example are available online. Skeletal model based on the work by Vasavada et al. (Vasavada et al., 1998).