Quantitative posturography in altered sensory conditions: a way to assess balance instability in patients with chronic whiplash injury1  Pascal Madeleine, PhD, Hanne Prietzel, MD, Heine Svarrer, MD, Lars Arendt-Nielsen, DMSc  Archives of Physical Medicine and Rehabilitation  Volume 85, Issue 3, Pages 432-438 (March 2004) DOI: 10.1016/j.apmr.2003.03.003

Fig 1 Example of the displacement of the COP, left foot COP, and right foot COP with eyes open in the ML and AP directions for 1 patient and 1 control. Archives of Physical Medicine and Rehabilitation 2004 85, 432-438DOI: (10.1016/j.apmr.2003.03.003)

Fig 2 Amplitude of the displacement of the COP, left foot COP, and right foot COP in the ML and AP directions (mean ± SE) for (A, D) patient (n=11) group for control (n=11) group (B, E) before and (C, F) after injection of hypertonic saline. ∗Significant differences between eyes open and the other postural conditions (pairwise comparison with Student-Newman-Keuls compensation, P<.05). Abbreviations as described in table 1. Archives of Physical Medicine and Rehabilitation 2004 85, 432-438DOI: (10.1016/j.apmr.2003.03.003)