An Analysis of Lateral Predominance in Adolescent Idiopathic Scoliosis With Special Reference to Convexity of the Curve

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Abstract
An analysis of lateral predominance of 51 patients with adolescent idiopathic scoliosis is presented. Determination of handedness, the dominant foot, and the dominant eye was performed. Postural equilibrium was studied by stabilometry, and the vestibular function was evaluated with electronystagmography. Central and peripheral nervous function were evaluated as reflected by electroencephalography and nerve-conduction velocity measurements. Results were compared with those obtained for a control group and were evaluated with special reference to convexity and location of the curve. Significant differences were found between patients with right convex curves and those with left convex curves in the distribution of eye predominance and in labyrinthine sensitivity. The direction of convexity was correlated with the predominant labyrinth for both groups. An analysis of these findings indicates that they can be of pathogenetic importance.

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