A Classification System of Asian Noses for Rhinoplasty

Ng CL.

What this paper says

Ng proposes sorting Asian noses into four types by skeletal strength and skin thickness, with surgeons agreeing on the classification almost perfectly (kappa 0.933).

Overview

"Asian nose" is used as if it were one anatomy, which undermines research comparisons and counselling. The Singapore author proposes a four-type classification based on (1) size and strength of bone and cartilage and (2) thickness of the skin and soft-tissue envelope, and reports inter-rater agreement among rhinoplasty surgeons.

Sections of note

Type I: thinner skin, stronger structure.
Type II: thinner skin, weaker structure.
Type III: thicker skin, stronger structure.
Type IV: thicker skin, weaker structure.
Inter-rater kappa 0.933 (95% CI 0.852-1.014), indicating near-perfect agreement.
Stated uses: matching technique to subtype, anticipating intra- and postoperative challenges, counselling on expected outcomes, and fair comparison of studies.

What it means for a patient

Two Asian patients can need very different operations; skin thickness and cartilage strength drive the plan.
Type IV (thick skin, weak cartilage) is the hardest to get definition in and is likely to need strong grafts.
Asking which type your nose is can frame a realistic discussion of what surgery can achieve.

Why this paper matters

It gives a simple, reproducible scheme to standardise Asian rhinoplasty research and counselling. Limits: proposal with reliability data only; no outcome data by type yet.

Terms

Skin and soft-tissue envelope (SSTE): the skin and layers beneath it covering the nasal skeleton.
Kappa coefficient: a statistic for agreement between raters; above 0.8 is near-perfect.
Inter-rater variability: how much different observers disagree when classifying the same cases.
Nasal subtype: a category of nose defined by shared structural features.

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

From the abstract

“While Asian noses are generalized as having smaller bones and softer cartilages, thicker skin and soft tissue envelop (SSTE), there exists a diversity of morphology amongst Asian noses. The oversimplification of Asian noses diminishes the validity or generalizability of rhinoplasty research findings and makes…”

Excerpt; the full abstract is on PubMed.