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. Author manuscript; available in PMC: 2012 Mar 15.
Published in final edited form as: Spine (Phila Pa 1976). 2011 Mar 15;36(6):E393–E400. doi: 10.1097/BRS.0b013e31820b7e2f

Figure 5.

Figure 5

Anterior and posterior disc height during the flexion/extension movement using bead-based (blue) and model-based (red) tracking results from a representative trial.