Abstract
The vestibular-ocular reflex assessment is important, but not enough. Tridimensional electromagnetic sensor systems represent a new method to assess posturography. AimTo assess body sway in healthy subjects who had positive Dix Hallpike and Epley maneuvers and with other vestibular dysfunctions by means of a three-dimensional system. Study design: Prospective. Materials and MethodsWe had 23 healthy women, 15 with peripheral vestibular dysfunction found upon caloric test and 10 with positive Epley and Dix Hallpike maneuvers. All tests performed in the following positions: open and closed eyes on stable and unstable surfaces. ResultsWith the Eyes Open and on a stable surface, p < 0.01 between the control group and the one with peripheral vestibular dysfunction in all variables, except the a-p maximum, full speed and mediolateral trajectory velocity, which had a p < 0.01 between the group with vestibular dysfunction and controls in all positions. The group with positive Epley and Dix Hallpike maneuvers had p < 0.01 at full speed and in its components in the x and y in positions with open and eyes closed on an unstable surface. ConclusionThe tridimensional electromagnetic sensors system was able to generate reliable information about body sway in the study volunteers.
Highlights
The early detection of postural dysfunctions is paramount to promote the proper interventions to patients with balance disorders
The group with positive Epley and Dix Hallpike maneuvers had p < 0.01 at full speed and in its components in the x and y in positions with open and eyes closed on an unstable surface
In the OESS situation, we noticed a significant difference between the control group and the group with vestibular dysfunction in all the variables (p < 0.01), except for the maximum a-p shift (p = 0.15)
Summary
The early detection of postural dysfunctions is paramount to promote the proper interventions to patients with balance disorders. The vestibulospinal reflex (VSR) analysis and integration with the visual and proprioceptive information make the test more complete[4,5]. The Balance and Social Integration Clinical Test (BSICT), employed in the computerized dynamics posturography, was developed with the aim of identifying the contribution of the three main sensorial systems associated with balance (visual, vestibular and somatosensory)[6,7,8]. This test tries to isolate the many sensorial contributions by means of surface and vision distortion or removal[6,9,10]. One of the main difficulties concerning the use of computerized posturography is the cost of the equipment (force platform) and the restrictions concerning its transportation[1]
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