<prompt> In type-4 thyroplasty, vocal cord is ?Medially displacedLaterally displacedLengthenedShoened  <response>: Ans. is c i.e., Lengthened Thyroplasty Isshiki divided thyroplasty procedures into 4 categories to produce functional alteration of vocal cords : - Type I : Medial displacement of vocal cord done by injection of gel foamTeflon paste Type 2 : Lateral displacement of cord done to improve the airway. Type 3 : Shoening relax the cord, to lower the pitch gender transformation from female to male. Type 4 : Lengthening tightening the cord, to elevate the pitch gender transformation from male to female, for example as a treatment of androphonia. 