Primary Closure of the Vulva
Primary closure of the vulva is the direct approximation and suturing of wound edges after vulvar excision without flaps, grafts, or other reconstructive techniques. It is the simplest and most commonly used method of closure after vulvar surgery, applicable across oncologic, obstetric, and benign-disease contexts.
For the broader treatment menu see the Vulvar Reconstruction Atlas. For grafts see STSG and FTSG. For overarching genital-defect framework see Genital Reconstruction Principles.
Indications and Feasibility
Primary closure is most appropriate when the resulting defect is small enough to allow tension-free approximation of wound edges.
| Factor | Detail |
|---|---|
| Defect size | Small defects (typically < ~4 cm) are closeable primarily; the mons pubis can be closed primarily or allowed to heal by secondary intention with NPWT.[1] |
| Anatomic location | Most successful in the anterior vulva, where skin is mobile and redundant. In the posterior and posterolateral vulva, closure is often under tension, leading to wound breakdown, scar formation, and dyspareunia.[2] |
| Tumor size | In vulvar cancer surgery, primary closure is generally reserved for smaller tumors (median ~23 mm); larger tumors (median ~45 mm) more often require reconstructive surgery.[3] |
Surgical Technique
There are no prospective trials comparing specific closure techniques for vulvar wounds; practice is guided by experience and expert opinion.[4]
| Step | Detail |
|---|---|
| Suture material | 2-0 chromic or polyglactin (Vicryl) absorbable suture[4] |
| Suture technique | Running-locking or interrupted sutures incorporating substantial underlying tissue to restore normal anatomy[4] |
| Layered closure | Repair of the superficial fascial system (Scarpa's-equivalent layer) may reduce wound tension and improve biomechanical strength, potentially decreasing dehiscence rates[5] |
| Tension-free closure | The critical principle — aggressive tissue mobilization may be needed to achieve tension-free approximation of perineal defects given the well-vascularized, redundant nature of perineal skin[1] |
Outcomes vs Reconstructive Surgery
Muallem et al. retrospective study (n = 177) comparing primary closure (PC) to reconstructive surgery (RS) after vulvar cancer excision:[3]
| Endpoint | PC | RS | p |
|---|---|---|---|
| Wound-healing disorders | Identical | Identical | NS |
| Tumor-free margins | 80% | > 90% | 0.1 |
| Recurrence | 23.5% | 10.3% | 0.012 (RS used for larger tumors) |
| Overall survival | — | — | NS |
The Dutch multicenter study (n = 394; 318 PC, 76 RS) found an overall wound-complication rate of 46.7%, with wound breakdown comprising 42.4% of complications. On multivariate analysis, reconstructive surgery was the only significant independent risk factor for wound complications (OR 1.2; 95% CI 1.1–1.2) — likely reflecting case-selection bias toward more complex defects.[6]
Wound Complications
Wound complications after vulvar surgery are notably common regardless of closure method.
| Population | Complication rate | Reference |
|---|---|---|
| Premalignant excisions | ~28.7% | [7] |
| Vulvar cancer surgery | 46.7–58% | [6][8] |
Risk factors
- Smoking (OR 1.64).[7]
- Larger tumor size, proximity to / resection of the urethra, perineal tumor location.[6]
- Overweight, central / bilateral tumor location.[8]
- Prior radiation therapy.
Antibiotic prophylaxis did not significantly reduce overall wound complications, though mean wound-separation length was shorter in the antibiotic group (1 vs 2 cm).[7]
Healing time — primary closure achieves full healing in ~30 d, vs ~50 d for secondary-intention healing.[9]
When Primary Closure Is Not Feasible
When defects are too large for tension-free primary closure, alternatives include:[1][10][11]
- Secondary-intention healing with wet-to-dry or negative-pressure wound therapy dressings.
- Split-thickness skin grafting — better for superficial defects; poor graft bed in fatty perineal tissue.
- Local flaps — Limberg (rhomboid), V-Y advancement, lotus-petal.
- Regional / distant flaps — gluteal, pudendal-artery perforator, or VRAM for extensive defects.
International guidelines recommend that reconstructive procedures should always be considered when primary closure would result in excessive tension, compromise functional outcomes, or yield suboptimal cosmesis.[12]
Obstetric Context
Per ACOG, vulvar lacerations during vaginal delivery that are not actively bleeding and do not distort anatomy generally do not require repair. When repair is needed, the technique mirrors that of first- and second-degree perineal-laceration repair using absorbable suture.[4]
Special Scenario — Vulvar Abscesses
Primary closure after incision and curettage of vulvar abscesses under antibiotic cover (single-dose clindamycin) demonstrated significantly shorter hospital stay (2 vs 7 d) and healing time (7 vs 18 d) compared with conventional open treatment, with equivalent recurrence.[13]
Key Takeaways
- Primary closure is the preferred approach for small, anterior vulvar defects that can be closed without tension.[1][3]
- Wound complications remain high (~30–50%) across vulvar surgical contexts.[6][7][8]
- Smoking cessation and preoperative optimization are important modifiable risk factors.[7]
- When tension-free closure cannot be achieved, flap reconstruction or secondary-intention healing should be pursued rather than forcing primary closure.[12]
References
1. Hamad J, McCormick BJ, Sayed CJ, et al. Multidisciplinary update on genital hidradenitis suppurativa: a review. JAMA Surg. 2020;155(10):970–977. doi:10.1001/jamasurg.2020.2611
2. Barnhill DR, Hoskins WJ, Metz P. Use of the rhomboid flap after partial vulvectomy. Obstet Gynecol. 1983;62(4):444–447.
3. Muallem MZ, Sehouli J, Miranda A, et al. Reconstructive surgery versus primary closure following vulvar cancer excision: a wide single-center experience. Cancers. 2022;14(7):1695. doi:10.3390/cancers14071695
4. Committee on Practice Bulletins — Obstetrics. ACOG Practice Bulletin No. 198: prevention and management of obstetric lacerations at vaginal delivery. Obstet Gynecol. 2018;132(3):e87–e102. doi:10.1097/AOG.0000000000002841
5. Al-Benna S, Tzakas E. Postablative reconstruction of vulvar defects with local fasciocutaneous flaps and superficial fascial system repair. Arch Gynecol Obstet. 2012;286(2):443–448. doi:10.1007/s00404-012-2262-1
6. Delahaije JJE, Jerry EE, Houterman S, et al. Risk factors for wound complications in vulvar cancer surgery and indications for reconstructive surgery. Cancers. 2025;17(11):1749. doi:10.3390/cancers17111749
7. Mullen MM, Merfeld EC, Palisoul ML, et al. Wound complication rates after vulvar excisions for premalignant lesions. Obstet Gynecol. 2019;133(4):658–665. doi:10.1097/AOG.0000000000003185
8. Leminen A, Forss M, Paavonen J. Wound complications in patients with carcinoma of the vulva. Comparison between radical and modified vulvectomies. Eur J Obstet Gynecol Reprod Biol. 2000;93(2):193–197. doi:10.1016/s0301-2115(00)00273-6
9. Dias-Jr AR, Soares-Jr JM, de Faria MBS, et al. Secondary healing strategy for difficult wound closure in invasive vulvar cancer: a pilot case-control study. Clinics (Sao Paulo). 2019;74:e1218. doi:10.6061/clinics/2019/e1218
10. Jędrasiak A, Juniewicz H, Raczek W, et al. Reconstruction of the vulva and perineum — comparison of surgical methods. J Clin Med. 2025;14(13):4456. doi:10.3390/jcm14134456
11. Höckel M, Dornhöfer N. Vulvovaginal reconstruction for neoplastic disease. Lancet Oncol. 2008;9(6):559–568. doi:10.1016/S1470-2045(08)70147-5
12. Ricotta G, Russo SA, Ferron G, Meresse T, Martinez A. The Toulouse algorithm: vulvar cancer location-based reconstruction. Int J Gynecol Cancer. 2025;35(4):100065. doi:10.1016/j.ijgc.2024.100065
13. Larsen T, Larsen PN, Christophersen S, Moesgaard F, Nielsen ML. Treatment of abscesses in the vulva. Conventional open treatment versus primary suture under antibiotic cover. Acta Obstet Gynecol Scand. 1986;65(5):459–461. doi:10.3109/00016348609157385