""canal wall down" mastoidectomies."
"Similar to a simple mastoidectomy in that the lateral wall of the mastoid is removed and the posterosuperior wall of the external acoustic meatus is preserved 1. Additionally, Koerner's septum is removed which grants access to the middle ear cavity and allows the ossicles to be seen1."
"The lateral wall of the mastoid is removed. The posterosuperior wall of the external acoustic meatus is preserved 1. This approach does not allow visualisation of the ossicular chain."
Expected headings
"Types of mastoidectomy"
"Simple mastoidectomy"
"Canal wall up (closed) mastoidectomy"
"Canal wall down (open) mastoidectomy"