Anatomy and how a nose is analysed

Before any technique is chosen, the nose has to be read: the bone measured, the cartilage counted, the skin assessed, and the result the patient wants agreed on a photograph that is not yet true. That reading is becoming quantitative, through CT of the septum and the bony vault, cadaver measurements of cartilages, three-dimensional planning and printed guides. The ideal being planned toward is neither universal nor stable: a neural network can now show that one surgeon's patients end up looking more like each other after surgery than they did before it.

325papers on file 37this page is written from 10journals, 2011–2026 80open access, full text 246with a plain-language summary

Where these 325 papers were published

82Aesthetic Plastic SurgeryAesthetic Plast Surg
62Plastic and Reconstructive SurgeryPlast Reconstr Surg
58Aesthetic Surgery JournalAesthet Surg J
50Facial Plastic SurgeryFacial Plast Surg
31Facial Plastic Surgery and Aesthetic MedicineFacial Plast Surg Aesthet Med
22Plastic and Reconstructive Surgery Global OpenPlast Reconstr Surg Glob Open
12JAMA Facial Plastic SurgeryJAMA Facial Plast Surg
4Facial Plastic Surgery Clinics of North AmericaFacial Plast Surg Clin North Am
2Clinics in Plastic SurgeryClin Plast Surg
2Archives of Facial Plastic SurgeryArch Facial Plast Surg

72011 62012 82013 112014 52015 222016 172017 172018 182019 292020 242021 292022 312023 202024 362025 452026

90 further papers on this topic came in through the history rather than the archive query: Rogers BO 1976, Thomas JR 1980, Farkas LG 1985, Rogers BO 1986 and 86 more. They are counted on the landmark papers, not here.

What repeats

Six findings reported by independent groups in different countries. Each card carries the papers it rests on.

Rhinoplasty makes faces more alike, and each surgeon's cohort alike in its own way

Analysing 145 primary rhinoplasty patients from the public websites of three experienced surgeons with a facial-recognition neural network: patients were 17.58% more similar to each other after surgery than before, most on the lateral view (19.17%). Within a single surgeon's cohort the increase was 30.89%, against 14.15% between cohorts. That is a measurable signature, each surgeon making noses that resemble their other noses. It is the strongest published argument for discussing, in the consultation, what a specific surgeon's results actually look like.

Rests on: Khaw and Lu, neural network analysis.

There is no universal ideal nose, and the field is now saying so in print

A systematic review of aesthetic preference across cultures concludes there is no universal ideal nasal morphology, and that preferences among non-White patients are barely studied. A survey of 197 people across Canada, Saudi Arabia, Kuwait and Lebanon found an ideal nasolabial angle of 97.1° for men and 109.5° for women, varying with the respondent's age. Two 2025–2026 papers go further and argue the descriptive categories themselves should change: classify the nose by projection, rotation, skin thickness and anthropometrics rather than by the patient's demographic label.

Rests on: Atiyeh et al., Eurocentric ideals and cultural identity · Alshawaf et al., preferred nasolabial angle · Hall et al., a novel anatomical classification · Craig et al., morphology over identity.

The anatomy that matters most is the part that used to be assumed

Fifteen cadaver dissections plus endoscopy in nine patients redefined the keystone area, the dorsal keystone averages 8.9 mm long and 4.9 mm wide, and the overlap of nasal bone over upper lateral cartilage varies between people. Cadaver work on the Pitanguy ligament shows it tethers the tip and is displaced by open dissection. Forty cadaveric lower lateral cartilages have been flattened, measured and turned into templates for rebuilding one from rib. This is the anatomical groundwork the preservation and structure schools both stand on.

Rests on: Palhazi et al., the osseocartilaginous vault · Lisiecki et al., the Pitanguy ligament in cadavers · Kiranantawat and Pakawatkul, cadaveric cartilage templates · Rossi Meyer et al., anatomy and biomechanics of dorsal preservation.

Imaging says how much cartilage there is before the operation starts

CT of 116 Asian adults quantifies the problem behind every graft decision: harvestable septal cartilage averages 461.5 mm², significantly less in women, rising to 992.0 mm² if the bony septum is included, with the skull base as the safety limit. A separate CT comparison found the quadrangular cartilage smaller in Black South African than in Caucasian noses. Three-dimensional CT of 250 bony vaults found 35.2% asymmetric, thicker bone on the deviated side, and thicker bone in men at every osteotomy point.

Rests on: Nguyen et al., septal donor site on CT · Pisapia et al., quadrangular cartilage in two populations · Kim et al., the bony vault.

Three-dimensional planning satisfies surgeons; it has not yet been shown to change results

Twelve studies and 595 patients: surgeons reported higher satisfaction and greater precision with 3D approaches, particularly in revision, and patients understood the plan better. With no significant difference in reoperation rate or operating time, inconsistent functional results, and a clear cost penalty. The current applications are printed cutting guides for craniofacial cases, patient-specific implants (50 Asian patients followed a year), intraoperative printed guides in hybrid preservation, and 3D photography from a smartphone during the operation.

Rests on: Werathammo et al., meta-analysis of 3D technology · Rubio-Palau et al., in-house printed guides · Suh et al., patient-specific implants at one year · Pozzo et al., printed intraoperative guide · Youssefi et al., 3D smartphone photography.

Artificial intelligence can describe a nose and cannot yet grade one

Four systems, ChatGPT 4o, Claude 3.7, Gemini 2.0 and Grok 2, were set against two expert surgeons scoring 50 rhinoplasty candidates on a standardised deformity scale. The two surgeons agreed with each other almost perfectly (intraclass correlation 0.997). Only one model matched the experts on the total score, every model differed on the sub-scores, and the best qualitative description of the nose type was right 70% of the time. Where AI is already useful is measurement rather than judgement: automated dorsal aesthetic line width and axis analysis in a matched cohort study, and morphing software for the consultation.

Rests on: Alqahtani et al., four AI systems against experts · Xu et al., AI-measured dorsal aesthetic lines · Lekakis et al., computer imaging in the consult · Lekakis et al., 3D surface imaging.

By structure

The nose, part by part, and what has actually been measured about each.

The bony vault

Thickness varies by path, by sex and by side: thickest at the middle of the lateral osteotomy path, thicker in men, and thicker on the deviated side of an asymmetric vault, which is a third of primary patients. An algorithm reading septal position, alar length, pyramidal length and the side the deviation starts on chooses the level and number of osteotomies from that anatomy in 521 patients.

Key papers: Kim et al. · Cabbarzade, the SELF algorithm.

The keystone area and the middle vault

Where nasal bone, upper lateral cartilage and septum meet. It is measured in cadavers, and preservation techniques are defined by leaving it intact. The "keystone angle" between bony and cartilaginous dorsum has been proposed as a preoperative measurement that selects the technique: a V-shaped bony dorsum makes a sharper angle than an S-shaped one.

Key papers: Palhazi et al. · Nele et al., the keystone angle · Rossi Meyer et al..

The septum, as a quarry

The septum is the first graft source and the reason the operation runs out of material. CT quantifies what can be taken while leaving a safe L-strut, how much less that is in women, and how much the bony septum adds. Population differences are measurable: less quadrangular cartilage in the Black African noses studied than in the Caucasian comparison group.

Key papers: Nguyen et al. · Pisapia et al..

The lower lateral cartilages

Flattened, photographed and measured in 40 cadaver specimens to produce two-dimensional templates for reconstructing a destroyed cartilage from a slice of rib, the first published dimensions of their kind. Where the cartilage is intact but malpositioned, classification systems now describe the deformity rather than the ethnicity.

Key papers: Kiranantawat and Pakawatkul · Tanvar and Basu, lateral crura classification · Hall et al..

The ligaments and the soft-tissue envelope

The Pitanguy ligament tethers the tip and is displaced by open dissection; the scroll ligaments connect upper and lower lateral cartilages. The envelope over them decides how much of any of this shows: dead space under a lowered radix fills with fibrosis and lifts the radix back up unless it is fixed.

Key papers: Lisiecki et al. · Akiner et al., the radix suture.

The ear, as a donor site

Three-dimensional imaging of 15 ear donor sites shows conchal and triangular fossa cartilage can be taken through one incision without measurable change in ear height, width or conchal dimensions, provided the helical crus is preserved.

Key paper: Huang et al., triangular fossa cartilage.

The nose over a lifetime

In 146 patients with unilateral cleft lip followed by photograph at 1, 5, 10, 15 and 18 years after a primary overcorrected rhinoplasty, the asymmetry that appears early is minor and stays stable. A rare measurement of what an operation looks like eighteen years later.

Key papers: Huang et al., morphology after facial maturation · Xia et al., nasal sill classification.

The terms, defined

Every term the papers above use to mean something specific, in plain language.

Anthropometry: measuring the face by defined landmarks and the ratios between them; the basis of every "ideal" figure quoted in rhinoplasty. [37738132, 39142701]
Nasolabial angle: the angle between the columella and the upper lip. Preferred values differ by the rater's sex, age and country: about 97° for men and 110° for women in one cross-national survey. [37738132]
Goode's ratio and the Byrd method: two ways of expressing tip projection as a proportion of nasal length. [40854551]
Dorsal aesthetic lines (DALs): the paired highlight lines from brow to tip; now measurable automatically from photographs. [41369038]
Keystone area: where the nasal bones overlap the upper lateral cartilages and meet the septum; measured at about 8.9 × 4.9 mm in cadavers. [25805276]
Keystone angle: the angle between the bony and cartilaginous dorsum, proposed as a preoperative measurement to select technique. [38488907]
Quadrangular cartilage: the main plate of septal cartilage; the primary graft source, and measurably smaller in some populations. [38599617, 42303768]
L-strut: the L-shaped dorsal and caudal strip of septum that must be left behind, conventionally 10 mm wide, to keep the nose standing. [42303768]
Pitanguy ligament: the fibrous band running from the dorsum to the tip through the soft-tissue envelope. [39026387]
Skin–soft tissue envelope (SSTE): skin, fat, muscle and ligaments over the framework; thick envelopes hide detail, thin ones show every edge. [41834234, 39142701]
MIRA scale: a standardised scale for describing nasal deformity, used as the reference in the AI comparison. [42547595]
Rhinoplasty Difficulty Scale: a Rasch-analysed scale in which 63 surgeons rated 64 techniques and deformities by how demanding they are, so difficulty can be described in common terms. [42459051]
Rasch analysis: the statistical method used both to build that difficulty scale and to link the NOSE and SCHNOS questionnaires onto one metric. [42459051, 38551458]
Normative data: what the general population scores on the same instruments; without it, a postoperative score cannot be called good. [42670247]
Morphing (computer imaging): altering the patient's photograph to show a planned result; the agreement tool of the consultation, and a documented reason some patients decide not to proceed. [26862968]
Volume projection rotation (VPR) assessment: the qualitative examination sorting a tip by those three axes before technique is chosen. [39187588]
Vertical dome division and vertical alar resection: dividing or resecting the dome to change projection; pooled across five studies, projection rose 15.8% with satisfaction above 90%. [42517059]

The papers this rests on

The 37 papers everything above was written from. Every one links to its abstract, its authors and its DOI.

APS
Qualitative and Quantitative Assessment of Four Artificial Intelligence Systems for Nasal Deformity Analysis in Rhinoplasty
Alqahtani A, Ebode D, Penicaud M et al.

2026PMID 42547595Summary
APS
The Golden Triangle Method: A Novel Simulation Framework for Rhinoplasty Design
Erbayat Y, Kirazoglu A, Yıldız K

2026PMID 42547597Summary
ASJ
One Profile to Rule Them All? A Neural Network Analysis of the Homogenizing Effect of Primary Rhinoplasty
Khaw KL, Lu SM

2025PMID 40501168Summary
PRS-GO
Shifting Goals in Aesthetic Rhinoplasty: Eurocentric Ideals, Ethnic Background, and Cultural Identity
Atiyeh B, Chrabieh E, Omaish H et al.

2025PMID 40995575Summary
PRS
"Morphology Over Identity: A Call for Retiring Broad Demographic Descriptors in Rhinoplasty"
Craig J, Satish K, Zeitouni F et al.

2026PMID 42312605
ASJ
Preferred Nasolabial Angle in Rhinoplasty: A Cross-Sectional Analysis
Alshawaf SM, McGuire C, ElAbd R et al.

2024PMID 37738132Summary
FPSAM
Bringing Inclusivity to "Ethnic" Rhinoplasty: A Novel Anatomical Classification System
Hall DB, McColl LF, Katta J et al.

2025PMID 39142701Summary
FPSAM
Invited Commentary on: "Bringing Inclusivity to 'Ethnic' Rhinoplasty: A Novel Anatomical Classification System," by Hall et al
Barrera JE, Gasic K

2025PMID 39142700
FPS
Unveiling the Impact of Three-Dimensional Technology on Rhinoplasty: A Systematic Review and Meta-analysis
Werathammo M, Seresirikachorn K, Charoenlux P

2025PMID 39038800Summary
FPSAM
3D Smartphone Photography During Rhinoplasty Surgery
Youssefi I, Obermeyer IP, Kim S et al.

2025PMID 39463383Full text
FPSAM
Invited Commentary on: Youssefi et al's 3D Smartphone Photography During Rhinoplasty Surgery
Yang SF, Patel PN

2025PMID 39463426
ASJ
In-House Virtual Planning and 3D-Printed Surgical Guides for Reconstructive Rhinoplasty
Rubio-Palau J, Gonçalves J, Malet-Contreras A et al.

2025PMID 39161317Summary
PRS
Patient-Specific Simulation and 3D‑Printed Intraoperative Guide in Hybrid Preservation Rhinoplasty: Enhancing Reproducibility, Communication, and Outcomes
Pozzo V, Benjoar MD, Lantieri L

2026PMID 41677802
APS
The Usefulness of 3D-printed Nasal Implant Based on Virtual Plastic Simulation on Asian Rhinoplasty: A 1-Year Follow-Up Study
Suh MK, Won JY, Kim YH et al.

2026PMID 40775193Summary
APS
Application of Personalized 3D-Printed Silicone Implants in Rhinoplasty: An Animal Experimental Study
Hou M, Li H, Guo Y et al.

2026PMID 42329445Summary
APS
The "Keystone Angle": Geometry in Preservation Rhinoplasty
Nele G, Cavaliere A, Schonauer F

2025PMID 38488907Summary
FPS Clin
Understanding Dorsal Preservation Rhinoplasty: Anatomy and Biomechanics
Rossi Meyer MK, Patel PN, Most SP

2025PMID 40253100Summary
FPS
The Quadrangular Cartilage in Rhinoplasty: A Surgically Focused CT Dimensional Analysis of Black African and Caucasian Populations
Pisapia F, Cottone G, Stutterheim J et al.

2025PMID 38599617Summary
APS
Optimizing the Septal Donor Site in Asian Rhinoplasty: A Computed Tomography-Based Simulation of the Bony-Cartilaginous Unit and Skull Base Safety
Nguyen CD, Chau DN, Nguyen HQ et al.

2026PMID 42303768Summary
ASJ
Radiological and Anatomical Parameters as Determinants of Success in Dorsal Preservation Rhinoplasty
Kemal Ö, Tahir E, Çolak O et al.

2025PMID 40179243Summary
ASJ
Postoperative Differences in Dorsal Aesthetic Lines in Patients Undergoing Dorsal Preservation Rhinoplasty and Conventional Hump Resection
Xu L, Huang H, Kandathil CK et al.

2026PMID 41369038Summary
PRS
Dorsal Preservation versus Open Structural Rhinoplasty: Can We Tell the Difference between Aesthetic and Functional Outcomes?
McCleary S, Khan A, Khetpal S et al.

2025PMID 40331571Summary
ASJ
Crowdsourced Assessment of Aesthetic Outcomes of Dorsal Preservation Rhinoplasty
Alford JA, McCleary S, Roostaeian J

2025PMID 39498873Summary
ASJ
An Anatomic Analysis of the Bony Vault: From the Perspective of Osteotomy in Rhinoplasty
Kim SJ, Kim TH, Lee KH

2023PMID 36594157Summary
ASJ
Establishing Normative Data on Satisfaction with Nasal Appearance: a Dutch Population-Based Study Using Aesthetic Rhinoplasty Outcome Instruments
Kasapov M, Afonso PM, Datema FR et al.

2026PMID 42670247Summary
FPSAM
Rhinoplasty Difficulty Scale: Development and Psychometric Analysis of a Surgeon's Assessment of Rhinoplasty Technique and Nasal Deformity Correction
Toriumi DM, Smith EV Jr, Ferreira MG et al.

2026PMID 42459051Summary
PRS
The Rhinoplasty Rosetta Stone: Using Rasch Analysis to Create and Validate Crosswalks between the NOSE and the SCHNOS Functional Subscale
van Zijl FVWJ, Declau F, Rizopoulos D et al.

2024PMID 38551458Summary
APS
Algorithm for the Treatment of Tip Malformation Combining a Clinical Qualitative Assessment and Specific Closed-Rhinoplasty Techniques Based on Retrospective Analysis of Pellegrini's Fellows 40 Years' Experience
Scattolin A, D'Ascanio L, Galzignato PF et al.

2025PMID 39187588Summary
ASJ
The osseocartilaginous vault of the nose: anatomy and surgical observations
Palhazi P, Daniel RK, Kosins AM

2015PMID 25805276Abstract
PRS
Nasal Morphological Changes after Facial Maturation in Patients with Unilateral Cleft Lip Following Primary Overcorrected Rhinoplasty
Huang CW, Charoenvicha C, Huang JG et al.

2026PMID 41949992Summary
APS
A Novel Classification of Nasal Sill Morphology Provides Strategies for Secondary Cleft Rhinoplasty
Xia Y, Yuan J, Wang Z et al.

2025PMID 39572464Summary
PRS
Triangular Fossa Cartilage Graft in Rhinoplasty: A Three-Dimensional Anatomical and Technical Feasibility Study
Huang CJ, Yen CI, Chang CS et al.

2025PMID 41335126Summary
FPSAM
Insight into a Rapid Technique for Diced Cartilage Creation in Rhinoplasty: Quantitative Analysis of the Tas Method
Goshtasbi K, Tommasino J, Wong BJF

2026PMID 40100947
FPS
Evolution of Preoperative Rhinoplasty Consult by Computer Imaging
Lekakis G, Claes P, Hamilton GS 3rd et al.

2016PMID 26862968Summary
FPS
Three-Dimensional Surface Imaging and the Continuous Evolution of Preoperative and Postoperative Assessment in Rhinoplasty
Lekakis G, Claes P, Hamilton GS 3rd et al.

2016PMID 26862969Summary
PRS-GO
Systematic Review and Meta-analysis of Vertical Alar Division and Resection in Tip Rhinoplasty
Alhajress R, Fnais N, Almajed H et al.

2026PMID 42517059Summary
FPS
Management of Lateral Crura Deformity in Functional and Aesthetic Rhinoplasty: Classification, Surgical Algorithm, and Outcome-Based Approach
Tanvar S, Basu R

2026PMID 42624495Summary

What is still contested

The homogenisation finding is measured on marketing photographs from three surgeons' websites, a selected sample by definition, and says nothing about whether patients minded. [40501168]
"Ideal" values are population-specific and mostly derived from young women in single countries; the cross-national survey that tested this found preferences moving with the rater's own age. [37738132, 40995575]
Anatomical classification is proposed as a replacement for demographic labels in at least three current papers, and no outcome study yet tests whether classifying that way changes results. [39142701, 42312605]
Three-dimensional planning improves surgeon satisfaction and precision with no measured effect on reoperation rate, operating time or function, at higher cost. [39038800]
AI is not yet reliable for grading a nose: every model differed from experts on sub-scores, and the best qualitative accuracy was 70%. [42547595]
Cadaver measurements come from small, mostly Asian or Caucasian specimen sets; the two population CT comparisons on file are single-centre. [41294316, 38599617, 42303768]
Almost nothing measures the nose beyond two years. The eighteen-year cleft series is the exception and is a different operation on a different nose. [41949992]