Laparoscopic Pudendal Nerve Decompression
Laparoscopic pudendal nerve decompression is a minimally invasive surgical release of the pudendal nerve for refractory pudendal neuralgia, performed as an alternative to the open transgluteal, transischiorectal, and transperineal decompression approaches.[1][2] For the diagnostic criteria, etiology, and the full stepwise management ladder for pudendal neuralgia, see Chronic Pelvic Pain; this page covers only the laparoscopic transperitoneal operative approach in more detail.
Surgical decompression of any kind is reserved for pudendal neuralgia refractory to conservative therapy, pudendal nerve blocks, and, where used, pulsed radiofrequency.[3]
Rationale
Pudendal nerve entrapment most often occurs between the sacrospinous and sacrotuberous ligaments or within Alcock's canal.[3] Open transgluteal, transischiorectal, and transperineal decompression approaches have been described for the same entrapment sites. A laparoscopic transperitoneal approach reaches the nerve from above, following it from the sciatic spine through the ischiorectal fossa, and has been proposed as a way to combine wide visualization of the nerve's course with a minimally invasive incision.[1][2]
Technique
The laparoscopic transperitoneal technique was first described by Erdogru and colleagues (the "Istanbul technique") as decompression and transposition of the nerve combined with an omental flap to protect it from re-fibrosis, and was later modified and reported in a larger cohort by Bollens, Absil, and Aoun.[1][2] As described by these authors:
- Approach. Transperitoneal laparoscopic entry, with the obturator vein followed as a landmark toward the sacrosciatic ligament.
- Landmarks. The arcus tendineus and the ischial spine orient dissection toward the pudendal neurovascular bundle.
- Release. The coccygeus muscle and sacrospinous ligament are released to free the nerve at the sciatic-spine level.
- Distal extension. Dissection continues into Alcock's canal toward the perineal fat, decompressing the nerve along its full intrapelvic and canalicular course; Erdogru's original description adds transposition of the nerve and an omental flap wrapped around it to limit re-entrapment from postoperative fibrosis.[1]
- Selective rectal branch release. Attention to the inferior rectal (anal) branch near the tuberous ligament has been described when that branch appears involved.
Both groups caution that the sciatic-root veins and the pudendal artery lie close to the nerve throughout this dissection, and that thermal energy should be used carefully near the nerve itself to avoid iatrogenic injury.[1][2]
Outcomes
| Series | Design | Key results |
|---|---|---|
| Erdogru 2014 (original Istanbul technique)[1] | 27 patients with pudendal nerve entrapment, laparoscopic decompression and transposition with omental flap protection; mean follow-up 6.8 ± 4.2 months (16/27 followed more than 6 months) | Mean operative time 199.4 ± 36.1 minutes; mean estimated blood loss 39.7 mL. Visual analog pain scores fell from a preoperative baseline to 1.5, 1.4, 1.6, and 2.0 at 1, 3, 6, and 12 months (p < 0.0001). Among the 16 patients followed beyond 6 months, 13 (81.2%) had more than an 80% reduction in VAS score |
| Bollens 2021 (laparoscopic transperitoneal release)[2] | 235 patients with pudendal entrapment syndrome, laparoscopic transperitoneal pudendal nerve and artery release; a subset of 32 patients had symptom scores at 24 months or more | Mean operating time 33.9 ± 6.8 minutes per side; mean hospital stay 1.9 ± 0.3 days. Perineodynia VAS fell from 6.8 ± 0.9 to 2.2 ± 1.8 (p < 0.001). Mean IIEF-5 improved from 15.2 to 19.3 at one month (p = 0.036). USP dysuria scores improved (4.2 vs 1.6, p = 0.021); USP stress-incontinence and overactive-bladder domains did not change significantly. Postoperative complications occurred in 18.7% of patients, with no severe (Clavien-Dindo grade III or higher) events reported. The only significant intraoperative complication was a pudendal-artery laceration causing 600 mL of blood loss in one patient, controlled with laparoscopic suturing |
Both series are single-center, uncontrolled case series without a comparator arm or blinding, and the Bollens cohort's longer-term (24-month) outcome data come from only 32 of 235 patients. They demonstrate feasibility and short-term symptom improvement with this approach but do not establish comparative superiority over open transgluteal, transischiorectal, or transperineal decompression, for which a randomized transgluteal trial has separately reported better outcomes when pain has been present for under 6 years than for 6 years or longer.[3] Neither series should be read as establishing a long-term cure rate; durability beyond the reported follow-up windows is unknown.
Complications
Reported complications include postoperative morbidity in roughly one-fifth of patients across the larger series (no severe events in that series) and, intraoperatively, injury to the pudendal artery or nearby sciatic-root veins requiring laparoscopic hemostatic control.[2] Thermal injury to the nerve itself is a theoretical risk whenever energy devices are used in its immediate vicinity during dissection.[1][2]
See Also
References
1. Erdogru T, Avci E, Akand M. Laparoscopic pudendal nerve decompression and transposition combined with omental flap protection of the nerve (Istanbul technique): technical description and feasibility analysis. Surg Endosc. 2014;28(3):925-932. doi:10.1007/s00464-013-3248-1
2. Bollens R, Mjaess G, Sarkis J, et al. Laparoscopic transperitoneal pudendal nerve and artery release for pudendal entrapment syndrome. Surg Endosc. 2021;35(11):6031-6038. doi:10.1007/s00464-020-08092-4
3. Ahmed M, Zavridis P, Hadjiconstanti D, Zis P. The diagnosis and management of pudendal neuralgia. Pain Ther. 2026;15(1):97-129. doi:10.1007/s40122-025-00803-w