Figure 7: Illustration of the various arrest levels of inner ear development (modified from Sennaroglu [6]).
1 = Michel-deformity, 2 = cochlear aplasia, 3 = common cavity, 4 = incomplete partition type I (IP I), 5 = cochlear hypoplasia, 6 = incomplete partition type II (IP II), Mondini deformity, 7 = normal;
a = sections through the internal auditory canal, b = sections through the round window