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Scrotal Flap Reconstruction — Consolidated Overview

Flap reconstruction is indicated when scrotal defects exceed ~50% of the envelope or when exposed vital structures (testes, urethra, cord, bone) preclude grafting. Across the largest systematic review of post-Fournier's flap reconstruction (Alammar 2026; 619 patients, 625 flaps), the overall flap-loss rate was only 1.6% despite the high-risk patient population.[6] Flap reconstruction also preserves spermatogenesis better than skin grafts (Demir animal model; Yao ALT clinical IIEF data).[3][22]

For each flap's full vascular anatomy, technique, and comparative outcomes see the foundations flap deep-dives linked below. For non-flap scrotal options see Scrotal Primary Closure, Scrotal Skin Grafting (STSG / FTSG), and Testicular Thigh Pouch.

Reconstructive Ladder by Defect Size​

  • ≤ 50% scrotal loss — primary closure using native dartos elasticity and standard mobilization maneuvers (septum division, dartos / gubernacular release, orchidopexy).[1][2]
  • > 50% scrotal loss with clean granulating bed — STSG onto tunica vaginalis or regional flap.[2][3]
  • > 50% loss with exposed vital structures — regional pedicled flap (this page).[4][6]
  • Total / near-total loss — combined flaps (island groin + bilateral superior-medial thigh per Sahai 30-yr) or a single large flap (ALT, vPMT).[4][5][22]

Comprehensive Scrotal Flap Comparison​

FlapPedicleSensateTissue matchMax sizeFlap lossKey advantageKey limitation
Pudendal-thigh / SingaporeInternal pudendal a. perforatorsYes (pudendal n.)Excellent (thin, pliable)20 × 15 cm~0%Sensate; natural neoscrotumLimited reach for distant defects[1][2][3]
EPAP hemi-scrotalExternal pudendal a. perforatorYes (anterior scrotal n.)Best — scrotal skin itself (1.1 mm)One hemiscrotum— (single case report)"Like with like"; no erection painLimited clinical experience[33]
Medial thighDeep external pudendal a., MCFA perforatorsYes (ilioinguinal n.)Good9 × 20 cmLowClose proximity; thinMay need bilateral for large defects
MCFAP (gracilis perforator)MCFA → gracilis perforatorsNoGoodModerate0% (Coskunfirat n = 7)Muscle preservation; thin contourShort pedicle (5.7 cm); small series[14]
Island groin (SCIA)Superficial circumflex iliac a.NoModerateModerate0% (Sahai n = 29 over 30 yr)30-yr track record; spinal anesthesia possibleBulkiness (traditional); variable anatomy[4]
SCIPSCIA perforatorsNo (LFCN optional)Thinnest non-scrotal flap22 × 10 cm0% (scrotal series)Thinnest; concealed scarShort pedicle; supermicrosurgery if free[20]
ALTDescending LCFANo (LFCN optional)Fair (too thick)220 cm²~0%Large paddle; preserved spermatogenesis (Yao IIEF)Bulkier than scrotal skin[22]
PMTP propeller / vPMTPFA / MCFA perforatorsNoGood9 × 35 cm0%Longest flap for extensive defectsLimited published experience
Gracilis myocutaneousMCFA (dominant pedicle)NoFair (bulky)30 × 15 cmLowBulk for dead-space obliterationHighest perineal complication rate (52.9%)[22]
VRAMDIEANoPoor (bulky)LargeLowLowest perineal complication rate (35.8%)Requires laparotomy; hernia risk
IGAP / gluteal-foldIGA perforators / descending IGANoFairLarge2.4%Fast elevation; no abdominal morbiditySitting discomfort
Posterior thighDescending IGA + PFA perforatorsYes (PFCN)FairLarge3.7%Avoids abdominal wall53% early wound complications (irradiated cohort)
Thigh advancement + testicular thigh pouchLocal thigh vasculatureNoPoor (thigh skin)443 cm² medianLowSimple; 100% perineal closure (Staniorski)Unnatural appearance; no true scrotum

Selection by Clinical Scenario​

Fournier's gangrene (most common etiology)​

Most-used flaps in Alammar 2026 SR: medial thigh, pudendal thigh, ALT.[6]

  • Partial scrotal loss with residual scrotal skin — pudendal-thigh (sensate, natural) or MCFAP (thin, muscle-sparing).[8][14]
  • Moderate (> 50%) — island groin (30-yr track record; spinal anesthesia) or pedicled SCIP (thinnest non-scrotal tissue).[4][20]
  • Total / near-total — island groin + bilateral superior-medial thigh flaps (Sahai), or bilateral ALT.[4][22]
  • MCFAP specifically advocated as "superior" for scrotal reconstruction by Coskunfirat (thinness, mobility, muscle preservation, primary donor closure in a single procedure).[14]

Extramammary Paget's disease​

Kim algorithm: SEPAP for suprapubic defects, IPAP for scrotal / perineal, SCIP + bilateral pedicled scrotal flaps for complex penoscrotal defects.[33]

Hidradenitis suppurativa​

Pudendal-thigh, medial-thigh, and ALT are most commonly used. SGAP / IGAP have been used for gluteal / perianal HS lesions.[2][35]

Penile shaft skin defects (circumferential)​

EPAP hemi-scrotal — sensate, ultra-thin (1.1 mm), eliminates erection pain by freeing the tunica vaginalis (Tsukuura 2025). Keystone SEPAP is an alternative using the same vascular territory.[33]

Lymphedema and penoscrotal lymphedema​

  • SCIP lymphatic flap (SCIP-LFT) — Abdelfattah 2023 in 26 advanced genital lymphedema patients: 100% flap survival; cellulitis rate significantly reduced.[31]
  • Vascularized lymph-node transfer (VLNT) into scrotum — Ehrl 2023: 9 giant penoscrotal lymphedema patients, no recurrence at median 49 mo.[31]

Key Selection Principles​

  1. Tissue match. Scrotal skin is ~1.1 mm thick. Best matches: EPAP hemi-scrotal (native), SCIP, MCFAP, pudendal thigh.[10][14][20]
  2. Sensation. Only the pudendal thigh (pudendal n.) and EPAP hemi-scrotal (anterior scrotal n.) deliver reliable protective sensation.[8][10]
  3. Testicular function. Flap reconstruction preserves spermatogenesis better than grafts (Demir, Yao IIEF).[3][22]
  4. Donor-site morbidity. SCIP, MCFAP, island groin — all primary donor closure with concealed inguinal-crease scars; gracilis myocutaneous has the highest perineal complication rate.[4][14][20][22][26]
  5. Simplicity / anesthesia. Island groin can be performed under spinal anesthesia (Sahai); pudendal thigh can be raised without preoperative imaging (Karaçal).[4][8]
  6. Combined perineal + scrotal defects. VRAM (lowest perineal complication 35.8%), IGAP (no abdominal morbidity), gracilis (bulk for dead space); TUGPAP chimeric flap provides muscle + skin from one donor.[26][38]

Cross-references​

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. Schifano N, Castiglione F, Cakir OO, Montorsi F, Garaffa G. Reconstructive surgery of the scrotum: a systematic review. Int J Impot Res. 2022;34(4):359–368. doi:10.1038/s41443-021-00468-x

3. Demir Y, Aktepe F, Kandal S, Sancaktar N, Turhan-Haktanir N. The effect of scrotal reconstruction with skin flaps and skin grafts on testicular function. Ann Plast Surg. 2012;68(3):308–313. doi:10.1097/SAP.0b013e318214534f

4. Sahai R, Singh S. Thirty-year experience of utility of island groin flap for scrotal-defect single-stage reconstruction. J Plast Reconstr Aesthet Surg. 2021;74(10):2629–2636. doi:10.1016/j.bjps.2021.03.036

5. Wishart KT, Fritsche E, Scaglioni MF. Pedicled vertical posteromedial thigh (vPMT) flap for the reconstruction of extensive perianal-genital defects. J Plast Reconstr Aesthet Surg. 2021;74(1):123–129. doi:10.1016/j.bjps.2020.08.001

6. Alammar A, Laing K, Somasundaram J, Wallace DL, Rogers AD. Flap reconstruction following Fournier's gangrene: a systematic review of techniques and outcomes. Burns. 2026;52(3):107888. doi:10.1016/j.burns.2026.107888

8. Mopuri N, O'Connor EF, Iwuagwu FC. Scrotal reconstruction with modified pudendal-thigh flaps. J Plast Reconstr Aesthet Surg. 2016;69(2):278–283. doi:10.1016/j.bjps.2015.10.039

10. Tsukuura R, Engmann T, Miyazaki T, Yamamoto T. The sensate external pudendal artery perforator (EPAP) hemi-scrotal flap for the circumferential skin defect of the penile shaft: a case report and literature review. Microsurgery. 2025;45(7):e70123. doi:10.1002/micr.70123

14. Coskunfirat OK, Uslu A, Cinpolat A, Bektas G. Superiority of medial circumflex femoral artery perforator flap in scrotal reconstruction. Ann Plast Surg. 2011;67(5):526–530. doi:10.1097/SAP.0b013e318208ff00

20. BS S, Khanna A, Taylor D. Pedicled superficial circumflex iliac artery perforator (SCIP) flap for perineo-scrotal reconstruction following Fournier's gangrene. ANZ J Surg. 2023;93(1-2):276–280. doi:10.1111/ans.18066

22. Yao H, Zheng D, Wen J, et al. Reconstruction of major scrotal defects by anterolateral thigh flap. Cell Biochem Biophys. 2014;70(2):1331–1335. doi:10.1007/s12013-014-0060-z

26. Singh M, Kinsley S, Huang A, et al. Gracilis flap reconstruction of the perineum: an outcomes analysis. J Am Coll Surg. 2016;223(4):602–610. doi:10.1016/j.jamcollsurg.2016.06.383

31. Abdelfattah U, Elbanoby T, Hamza F, et al. Treatment of advanced male genital lymphedema with a complete functional lymphatic-system pedicled transfer. Urology. 2023;175:190–195. doi:10.1016/j.urology.2023.02.006

33. Kim WJ, Kim SH, Sung HH, Lee KT, Pyon JK. Penoscrotal defect reconstruction using loco-regional flaps in treatment of extramammary Paget's disease: experience and suggestion of a simplified algorithm. Microsurgery. 2023;43(4):316–324. doi:10.1002/micr.30988

35. Unal C, Yirmibesoglu OA, Ozdemir J, Hasdemir M. Superior and inferior gluteal artery perforator flaps in reconstruction of gluteal and perianal / perineal hidradenitis suppurativa lesions. Microsurgery. 2011;31(7):539–544. doi:10.1002/micr.20918

38. Ciudad P, Huang TC, Manrique OJ, et al. Expanding the applications of the combined transverse upper gracilis and profunda artery perforator (TUGPAP) flap for extensive defects. Microsurgery. 2019;39(4):316–325. doi:10.1002/micr.30413