Definition of "Gender Angle" in Caucasian Population.

INTRODUCTION: The goal of this study report is to define the "gender angle," a new angle which represents the masculine or feminine nasal shape, for performing a gender-oriented rhinoplasty. The use of the "gender angle" in Caucasian patients will help the plastic surgeon in the search for a suitable nose for the patient's face and above all for the search for maximum patient satisfaction. MATERIALS AND METHODS: The study population was obtained from Caucasian patients who had undergone rhinoplasty between January 1986 and September 2016 at our department. Patients answered the Italian version of the FACE-Q outcome instrument on post-rhinoplasty satisfaction with their nose. Anthropometric measurements were taken retrospectively by AutoCAD for MAC on a photograph of the profile view taken postoperatively at the last follow-up. RESULTS: A total of 1774 (706 male and 1068 female) patients satisfied the inclusion criteria and were finally enrolled in this study. We identified a gender-specific angle ranging from 168° to 182° for the male nose and from 160° to 178° for the female nose. We subdivided all study patients into 3 ranges of angles as follows: male nose, range 1 = 168°-172°, range 2 = 173°-177°, range 3 = 178°-182°; female nose, range 1 = 160°-166°, range 2 = 167°-171°, range 3 = 172°-178°. All study patients completed the FACE-Q rhinoplasty postoperative module. Analysis was performed of the FACE-Q results and the angle obtained for each nose. The most satisfactory angle range for male patients was range 3 (P = 0.01) and for the female patients was range 2 (P = 0.01). CONCLUSIONS: The "gender angle" might be a parameter that effectively provides the optimal cosmetic result for male and female patients who undergo rhinoplasty. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors - www.springer.com/00266 .