Postoperative Differences in Dorsal Aesthetic Lines in Patients Undergoing Dorsal Preservation Rhinoplasty and Conventional Hump Resection

Xu L, Huang H, Kandathil CK, Longino ES, Wei E, Most SP.

What this paper says

Both dorsal preservation and conventional hump resection widened the dorsal aesthetic lines by about 1 mm at the mid-nose, with no measurable difference between the two techniques.

Overview

The authors asked whether preservation rhinoplasty (which keeps the nasal roof intact and lowers it) and conventional hump resection (which removes the hump) produce different dorsal aesthetic lines. They ran a retrospective matched cohort study of 70 primary rhinoplasty patients (30 preservation, 40 resection), measured the lines with an AI-driven image tool before and after surgery, and scored function and appearance with the SCHNOS questionnaire. Both groups widened slightly and both improved on patient-reported scores.

Sections of note

Mid-nose dorsal aesthetic line width rose from 8.835 to 10.120 mm (preservation) and 9.383 to 10.100 mm (resection); the between-group difference was not significant (P = .089).
SCHNOS-C (cosmetic) scores improved in every subgroup (P < .001) and the change exceeded the minimal clinically important difference.
In patients who had surgery for both cosmetic and breathing reasons, SCHNOS-O (obstruction) scores fell significantly in both groups (P < .001).
Nasal axis deviation fell after surgery in both groups: 1.715 to 1.207 degrees (preservation, P = .008) and 1.446 to 0.751 degrees (resection, P = .004).
Level of evidence 3 (therapeutic).

What it means for a patient

In this study, the choice between preservation and hump resection did not change how wide the bridge looked afterwards.
Both techniques improved patient-rated appearance and breathing; neither was shown superior.
A slight widening of the bridge after hump reduction occurred with both approaches and may be a normal result rather than a technique-specific problem.

Why this paper matters

It is one of the first matched comparisons to measure dorsal aesthetic lines objectively across the two main hump-reduction philosophies, from a Stanford group (senior author Most). Limits: retrospective, 70 patients, single centre, and an unstated follow-up interval.

Terms

Dorsal aesthetic lines (DALs): the two curved highlight lines running from the brows down the bridge to the tip that define how the nose reads from the front.
Dorsal preservation rhinoplasty (DPR): hump reduction that lowers the intact bridge instead of cutting the hump off.
Conventional hump resection (CHR): the standard method of shaving or cutting away the bony and cartilaginous hump.
SCHNOS: a validated patient questionnaire with separate obstruction (O) and cosmetic (C) subscores.
Minimal clinically important difference (MCID): the smallest score change a patient would actually notice.

Summary written by rhinoplasty.cc from the abstract, 2026-09-08; not medical advice. The authors' own abstract follows.

From the abstract

“Dorsal preservation rhinoplasty (DPR) and conventional hump resection techniques (CHR) are 2 distinct methods for nasal hump reduction, affecting dorsal aesthetic lines (DALs) and midvault stability differently. There is limited existing evidence regarding variations in DALs width, between these techniques.…”

Excerpt; the full abstract is on PubMed.