Nerve damaged in radical mastoidectomy is -
Complications of radical mastoidectomy

Injury to facial nerve
Dislocation of incus
Injury to horizontal semicircular canal. The patient will have post-operative giddiness and nystagmus.
Injury to sigmoid sinus with profuse bleeding.
Injury to the dura of middle cranial fossa.
Facial
Cochlear
Vestibular
All