Nerve damaged in radical mastoidectomy is -: (A) Facial, (B) Cochlear, (C) Vestibular, (D) All
Answer is A. 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.