A novel classification of alar retraction based on nostril exposure in Asian rhinoplasty.

[OBJECTIVE] Alar retraction is considered a challenge in rhinoplasty. The classification of alar retraction remains poorly defined, especially in Asia. Patients with alar retraction are associated with excessive exposure to the nostrils in Asia. This study aimed to introduce a classification method of alar retraction based on nostril exposure.

[MATERIALS AND METHODS] Medical records of patients who had undergone rhinoplasty with alar retraction based on nostril exposure between January 2015 and December 2020 were retrospectively reviewed. The corrections of alar retraction were categorized into three groups according to a classification method of alar retraction based on nostril exposure: mild alar retraction, moderate alar retraction, and severe alar retraction. The visual analog scale (VAS) and rhinoplasty outcomes evaluation (ROE) were used to evaluate the satisfaction rate.

[RESULTS] Within a median period of 13.3 months, 45 patients (51.14%) with mild alar retraction were corrected by alar contour graft. 23 patients (26.14%) with moderate alar retraction were treated with the alar contour graft(n=10), the lateral crural strut graft (n = 6), and the alar projection graft (n = 7). 20 patients (22.73%) with severe alar retraction were corrected by lateral crural strut graft combined with composite graft (n = 6), lateral crural strut graft (n = 10), and composite graft (n = 4). The severe alar retraction group had a higher satisfaction rate in ROE(P<0.05) and VAS (P<0.05) than moderate alar retraction and mild alar retraction at a follow-up of 12 months after surgery.

[CONCLUSIONS] The classification of alar retraction based on nostril exposure is more practical for rhinoplasty in Asia.