Рет қаралды 14,529
#deaf #child #cause Mother
Definition
Scheibe dysplasia - CochleoSaccular Dysplasia
Alexander dysplasia - Basal turn of membranous cochlea , high freq affected
Bing-Siebenmann dysplasia - absense of membranous labyrinth
Michel aplasia - absence of bony and membranous labyrinth. Even petrous apex is absent. No hearing aids or cochlear implantation
Mondini dysplasia .. Cochlea is 1.5 turns.. (normal 2.75 turns)
Enlarged vestibular aqueduct
Semicircular canal malformations