The Relation between the removed part width from the caudal end of the Quadrangular cartilage and the change on the Nasolabial angle during Rhinoplasty

with development of Rhinoplasty and the technique of surgery the surgeons can understand the anatomic mechanisms which cause the formalism changes on nose after the surgery , and may continue several months after surgery, by a lot of publications and researches during last years. But few of these researches identify the accurate quantitative relation between the anatomic modifications which they do during surgery and between the formalism changes on nose and face after rhinoplasty. The Aim of this research is Identify the relation between the width of the removed part from caudal end of Quadrangular cartilage and the change on the Nasolabial angle.