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The objective was to\u00a0determine the A-value reported in the literature, to assess the accuracy of the\u00a0A-value measurement and to evaluate a novel cochlear measurement in distinguishing malformed cochlea. High resolution Computer\u00a0Tomography images in the oblique coronal plane\/cochlear view of 74 human temporal bones were analyzed. The A-value and novel C-value measurement were evaluated as predictors of inner ear malformation type. The proximity of the facial nerve to the basal turn was evaluated subjectively. 26 publications report on the A-value; but they do not distinguish normal <jats:italic>vs.<\/jats:italic> malformed cochleae. The A-values of the normal cochleae compared to the cochleae with cochlear hypoplasia, incomplete partition\u00a0(IP) type I, -type II, and -type III were significantly different. The A-value does not predict the C-value. The C-values of the normal cochleae compared to the cochleae with IP type I and IP type III were significantly different. The proximity of the facial nerve to the basal turn did not relate to the type of malformation. The A-value is different in normal <jats:italic>vs.<\/jats:italic> malformed cochleae. 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