Bilateral Triangular & Inverted Horizontal V-Shaped Resection — Liu Classification Hoodoplasty
The Liu 2022 classification system (Aesthet Plast Surg) was the first systematic classification of clitoral hood hypertrophy by anatomical zone. The two surgical techniques most strongly associated with the system — bilateral triangular skin resection (for the wide central hood) and inverted horizontal V-shaped resection (for the long central hood) — together cover Zone-C central hypertrophy and form the basis of an anatomy-driven hoodoplasty algorithm. In the Liu series, n = 1,135 patients were classified and n = 789 received classification-based surgery, with 95.7% satisfaction, complications 4.3%, revision 1.9%, and no paresthesia at 6 months — the largest reported hoodoplasty cohort in the literature.[1] For positioning vs other female cosmetic options see Cosmetic Genital Surgery — Female.
The ACOG 2020 Committee Opinion No. 795 states that female genital cosmetic procedures, including clitoral hood reduction, are not medically indicated in patients without structural or functional abnormalities and that safety and effectiveness have not been established. Evidence is largely restricted to retrospective single-surgeon case series; validated outcome instruments are rarely used.[2] The FIGO 2025 Statement echoes this position. Mandatory BDD screening belongs at the front of every consultation.
The Liu zone-based classification
The clitoral-hood region is divided into two anatomical zones:[1]
- Central zone (Zone C) — the midline prepuce overlying the clitoral glans.
- Lateral zone (Zone L) — the lateral folds of the hood that blend into the labia minora.
Patients are then classified into five types, each with a matched surgical strategy:
| Type | Description | Recommended approach |
|---|---|---|
| Type 1 — Standard | Normal anatomy, no hypertrophy | No intervention |
| Type 2 — Central hypertrophy (Zone C) | Excess overlying the glans only | Bilateral triangular resection (wide hood) OR inverted horizontal V-shaped resection (long hood) |
| Type 3 — Lateral hypertrophy (Zone L) | Excess in the lateral folds only | Vertically oriented lateral excision |
| Type 4 — Composite hypertrophy | Excess in both Zone C and Zone L | Combination of central + lateral techniques |
| Type 5 — Special variants | Unusual anatomy | Individualized approach |
The key innovation is the subdivision of Type 2 central hypertrophy into a wide pattern and a long pattern, with a different geometry of excision for each.[1]
Bilateral triangular resection — for the wide central hood
Indication: horizontal redundancy — the central hood is excessively wide, creating lateral fullness over the clitoral glans.[1]
Concept and geometry. Bilateral triangular wedges of skin are excised from each side of the central hood. The triangles are oriented to reduce the transverse width of the prepuce, narrowing the hood while preserving midline coverage of the clitoral glans. The bilateral, symmetric design controls width reduction equally from each side, minimizing asymmetry risk.
Step-by-step:
| Step | Detail |
|---|---|
| 1. Marking | Lithotomy. Two mirror-image triangular wedges marked on the lateral aspects of the central hood — apex of each triangle directed toward the midline (preserving midline coverage), base along the lateral free edge of the prepuce. Width of each triangle determines the degree of narrowing. |
| 2. Anesthesia | Local with epinephrine, ± sedation, or general. |
| 3. Excision | Both triangles excised through prepuce skin and subcutaneous tissue, with explicit identification and preservation of the dorsal nerve of the clitoris and underlying neurovascular bundle. Avoid deep dissection into corporal tissues. |
| 4. Hemostasis | Bipolar electrocautery; selective suture ligation. |
| 5. Closure | Symmetric layered closure with fine absorbable suture. The new lateral prepuce edges meet under the desired transverse tension; midline coverage is preserved. |
Inverted horizontal V-shaped resection — for the long central hood
Indication: vertical redundancy — the central hood extends too far inferiorly, excessively covering or overhanging the clitoral glans.[1]
Concept and geometry. A horizontally oriented inverted V (chevron) is excised across the hood. The apex of the inverted V points inferiorly (toward the clitoris) and the arms extend superiorly / laterally toward the mons. Excising this tissue shortens the vertical length of the hood, effectively "lifting" it to expose the clitoral glans appropriately. Conceptually similar to the inverted-V hoodoplasty patterns described by Triana and colleagues.[3][4]
Step-by-step:
| Step | Detail |
|---|---|
| 1. Marking | Lithotomy. The horizontal inverted-V is marked across the hood with the apex pointing inferiorly and the two arms extending superolaterally. The vertical span of the V determines the amount of lift. |
| 2. Anesthesia | Local with epinephrine, ± sedation, or general. |
| 3. Excision | The inverted-V wedge is excised through prepuce skin and subcutaneous tissue. Preserve the dorsal neurovascular bundle. |
| 4. Hemostasis | Bipolar electrocautery; selective suture ligation. |
| 5. Closure | Approximation of the superior and inferior cut edges in layers with fine absorbable suture. The closure shortens vertical hood length; the glans is appropriately exposed. |
Outcomes (Liu 2022, n = 789 treated)
| Endpoint | Result |
|---|---|
| Patients classified | 1,135 |
| Patients receiving classification-based surgery | 789 |
| Aesthetic satisfaction at 6 months | 95.7% |
| Complication rate | 4.3% (34 patients) |
| Revision rate | 1.9% (15 patients) |
| Paresthesia at 6 months | None reported |
This is the largest reported cohort in the hoodoplasty literature.[1] The absence of paresthesia at 6 months is reassuring regarding neurologic safety, though long-term follow-up beyond 6 months is not reported. Specific complication types (dehiscence, hematoma, infection) are not individually broken out.
Comparison with other hoodoplasty series
| Series | n | Satisfaction | Complications | Revision |
|---|---|---|---|---|
| Liu 2022 classification-based[1] | 789 | 95.7% | 4.3% | 1.9% |
| Eserdağ 2021 inverted-Y plasty[5] | 63 | 96.9% | No major | Not reported |
| Xia 2021 three-step excision[6] | 136 | 95.5% | 4.4% | 3.7% |
| Triana 2015 longitudinal excision[3] | 630 | 98% self-esteem improvement | No major | Not reported |
| Shi 2026 modified wedge composite[7] | 738 | 96.2% overall | 4.7% | Not reported |
| Duan 2026 two-part excision[8] | 68 | GAS improvement (p < 0.05) | 7.4% | 1.5% |
Comparison with the Xia CLC classification
The Xia 2022 CLC classification (Aesthet Surg J) takes a different approach — focusing on the clitoral hood–labia minora complex (CLC) rather than the hood alone — and divides patients into 3 types based on the relationship between the lateral hood and labia minora:[9]
| Xia type | Description | Frequency | Approach | Satisfaction |
|---|---|---|---|---|
| Type 1 | Isolated hypertrophy | — | Standard isolated technique | High |
| Type 2 | Conventional combined hypertrophy | — | Combined hood + labia | High |
| Type 3 | Fused lateral clitoral hood and labia minora | 17.5% | Specialized 4-step excision | 91.7% vs 56.3% with standard wedge |
The Xia and Liu classifications are complementary rather than competing — Liu provides central-zone subtyping (wide vs long), Xia provides lateral-zone CLC subtyping (especially identifying the fused variant that conventional wedge does not address well).
Advantages of the Liu approach
- Anatomy-driven technique selection — the classification matches the specific pattern of excess (horizontal vs vertical, central vs lateral) to the most appropriate excision design.[1]
- Largest evidence base in the hoodoplasty literature — n = 1,135 classified, n = 789 treated.[1]
- Reproducible and structured — provides a framework that less experienced surgeons can apply systematically.
- Combinable — for Type 4 composite hypertrophy, central and lateral techniques are combined in the same operation.[1]
- No paresthesia at 6 months across 789 treated patients — reassuring neurologic safety.[1]
Limitations
- Single-center retrospective case series (Level IV) without a control group.[1]
- Non-validated questionnaires for satisfaction, a limitation shared by virtually all studies in this field.[2]
- No long-term follow-up beyond 6 months.
- Specific complication types not broken out (dehiscence vs hematoma vs infection are not individually reported in the Liu cohort).
- ACOG 2020 cautions that high satisfaction in non-validated reports does not establish clinical effectiveness.[2]
Critical safety considerations
Across all hoodoplasty techniques, including bilateral triangular and inverted-V resection[1][2]:
- Preserve the dorsal neurovascular bundle of the clitoris.
- Avoid over-resection — excessive removal can produce clitoral exposure with hypersensitivity or chronic pain, or paradoxical loss of sensation.
- Symmetric tissue removal to prevent postoperative asymmetry — the bilateral triangular design helps enforce symmetry by construction, but intraoperative comparison is still required.
- Document neurologic baseline preoperatively.
Postoperative management
- Activity restriction. Avoid intercourse, tampon use, and strenuous exercise for 4–6 weeks.
- Wound care. Ice 48–72 h; sitz baths 24–48 h onward; topical antibiotic ointment; loose-fitting clothing.
- Follow-up. 1 week (wound check), 6 weeks (clearance), 3–6 months (final outcome). Consider locally extended follow-up to 12 months given the limited long-term published data.
- PRO assessment. FSFI and FGSIS at baseline and ≥ 6 months postoperatively.
See Also
- Inverted-Y Plasty Clitoral Hoodoplasty
- Three-Step / Two-Part Composite Excision (Lateral Hood + Labia Minora)
- Female Cosmetic Genital Surgery (umbrella)
References
1. Liu M, Li Q, Li S, et al. Preliminary exploration of a new clitoral hood classification system and treatment strategy. Aesthet Plast Surg. 2022;46(6):3080–3093. doi:10.1007/s00266-022-02874-y
2. Committee on Gynecologic Practice, American College of Obstetricians and Gynecologists. Elective female genital cosmetic surgery: ACOG Committee Opinion No. 795. Obstet Gynecol. 2020;135(1):e36–e42. doi:10.1097/AOG.0000000000003616
3. Triana L, Robledo AM. Aesthetic surgery of female external genitalia. Aesthet Surg J. 2015;35(2):165–177. doi:10.1093/asj/sju020
4. Triana L, Harini BS, Liscano E. Hoodplasty: individualized approach for labiaplasties. Aesthet Plast Surg. 2024;48(11):2197–2203. doi:10.1007/s00266-023-03777-2
5. Eserdağ S, Anğın AD. Surgical technique and outcomes of inverted-Y plasty procedure in clitoral hoodoplasty operations. J Minim Invasive Gynecol. 2021;28(9):1595–1602. doi:10.1016/j.jmig.2021.01.015
6. Xia Z, Liu CY, Yu N, et al. Three-step excision: an easy way for composite labia minora and lateral clitoral hood reduction. Plast Reconstr Surg. 2021;148(6):928e–935e. doi:10.1097/PRS.0000000000008589
7. Shi Y, Sun Y, Chen L, Gao Y, Li Q. Clinical observations of the modified wedge resection in composite labia minora and clitoral hood reduction surgery. Aesthet Plast Surg. 2026;50(4):1621–1627. doi:10.1007/s00266-025-05593-2
8. Duan L, Li Z, Zhang H, Zhang B. Composite labia minora and clitoral hood reduction: an optional surgical method. Aesthet Plast Surg. 2026;50(8):3035–3042. doi:10.1007/s00266-025-05075-5
9. Xia Z, Liu CY, Zhang M, et al. Fused lateral clitoral hood and labia minora: new classification based on anatomic variation of the clitoral hood-labia minora complex and simple surgical management. Aesthet Surg J. 2022;42(8):907–917. doi:10.1093/asj/sjac039