<prompt> Killian;s incision is used forSeptoplastyMyringotomyProof punctureModified radical mastoidectomy  <response>: Killian;s incision is used for septoplasty Killians incision in case of deted nasal septum, make a slightly curvilinear incision, 2-3mm above the caudal end of septal cailage on the concave side . Re: Textbook of Ear, Nose and Throat, Dhingra, 6th Edition; Pg no: 416 