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Mastoiditis is a serious bacterial infection that affects the mastoid bone behind the ear. It's usually more common in children, although adults can also sometimes be affected. The mastoid bone has a honeycomb-like structure that contains air spaces called mastoid cells.
These are cells are connected to the middle ear. Mastoid air cells are covered by mucoperitoneum that is continuous with the tympanic cavity and with the squamous part of the temporal bone [ 1 ]. The mastoid notch is located medial to the mastoid process.It is pierced by stylomastoid foramen in front and mastoid foramen is found on its back. Mastoid notch serves as the site of muscle attachment for the anterior and posterior bellies of the digastrics whose function is to open the mouth [ 2 ].hese are cells are connected to the middle ear. Mastoid air cells are covered by mucoperitoneum that is continuous with the tympanic cavity and with the squamous part of the temporal bone [ 1 ]. The mastoid notch is located medial to the mastoid process.