These findings confirm recent AIS studies. Our results might be related to immature central integration of dynamic proprioceptive input leading to a poorly adapted motor response, particularly for postural control of the, in AIS. These balance tests can be performed in routine practice. Their validity as a biomarker for screening and monitoring purposes should be assessed.
There is not enough evidence to show a link between unilateral, isolated, vestibular dysfunction and AIS. From these findings, we propose a more global pathophysiological concept, which involves a trouble of the orthostatic postural control, with disturbance in the multisensory integration of vestibular, visual and somesthesic inputs. AIS could be the consequence of a reorientation of the longitudinal body axis in accordance with an erroneous central representation of verticality. An assessment of the sense of verticality would allow evaluate this hypothesis.
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