Citelli’s angle is:
- Solid angle
- Cerebellopontine angle
- Sinodural angle
- Genu of facial nerve
Sinodural angle is also called the Citelli’s angle. It is formed at the site where dura of middle cranial fossa meets the dura of sigmoid sinus. It forms an important landmark in mastoid surgery.
McEwen‘s triangle is bounded by temporal line. posterosuperior segment of the external auditory canal and a line drawn as a tangent to the external canal. It is an important landmark to open the mastoid antrum-an Initial step for mastoidectomy.
Solid angle is the place where three semicircular canals meet.