Functional and surgical anatomy of the nasolabial angle and the use in aesthetic rhinoplasty

Two anatomical structures are described in the nasolabial angle: the anterior nasal spine and the depressor septi nasi muscle, which maintain a certain ba- lance between them. Changes of its morphology cause unsightly situations. Between January 2014 and December 2018, of the 200 patients was submitted to rhinoplasty, 79 of them had variations in the nasolabial angle, which were classified into three grades. As results, 50% (n = 39) was in the level 1, 40% (n=32) in the level 2 and 10% (n = 8) in the level 3. Surgeries were performed with specific technique for each group. The surgery focused on the anterior nasal spine and the depressor septi nasi muscle. Aesthetic ba- lance was recovered in the nasolabial angle.