Clinical trial NCT03883178: New Endoscopic Minimal Invasive Approach for Pudendal Nerve and Inferior Cluneal Nerve Neurolysis: a Clinical Study
Official title: New Endoscopic Minimal Invasive Approach for Pudendal Nerve and Inferior Cluneal Nerve Neurolysis: a Clinical Study
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Pudendopathie
Clunealgie
Lead sponsor: Brugmann University Hospital
Sponsor class: OTHER
First posted: 2019-03-20
Enrollment: 30
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: Pudendal nerve and cluneal nerve entrapment can cause a neuropathic pain syndrome in one, many or all of the sensitive areas innervated by this nerve. In literature, several techniques for the liberation of the pudendal nerve have been described. Here, transvaginal, transperineal and abdominal laparoscopic approaches have been proposed, but none of the latter were able to visualize the entire course of the nerve or allowed to explore the main, currently identified sites of entrapment. Although there have been reports and series of case reports on different surgical approaches, until now, the transgluteal approach is the only one which is validated by a prospective randomized study comparing the medical treatment to these surgical approach.

The investigators already performed a study to describe for the first time a new endoscopic minimal invasive technique using a transgluteal approach which permits to visualize all the nerve structures of the gluteal region. They performed an anatomic description of the region reachable with this minimally invasive approach, and described the anatomic landmarks for the visualization of the pudendal and cluneal nerve and their neurolysis.

In this study, the investigators would like to put in clinical practice this minimal invasive approach for pudendal and cluneal neurolysis. They will perform this endoscopic approach, on patients suffering from pudendalgie or/and clunealgie, who are programmed for a surgical intervention by transgluteal approach.

The investigators would like to test the feasibility of the transgluteal trocar positioning and if necessary, optimize this first important step. Secondly, they will put in practice the step-by-step surgical approach that they have worked out during their cadaver study. Finally, they will perform the entire neurolysis and nerve transposition under endoscopic control.


Eligibility criteria: Inclusion Criteria:

Patients suffering from pudendalgie and/ or clunealgie, according to the 5 Nantes criteria and who are candidates for transgluteal surgical treatment.

Exclusion Criteria:

None

Primary outcomes:
measure: score on the SF-36 questionnaire
timeFrame: Change from baseline at 3 months after surgery
measure: Pain intensity according to EVA scale
timeFrame: Change from baseline at 3 months after surgery
measure: Pain intensity according to EVA scale
timeFrame: Change from baseline at 6 months after surgery
measure: Surgery duration
timeFrame: 24 hours
measure: Adverse events during surgery
timeFrame: 24 hours
measure: Adverse events after surgery
timeFrame: 48 hours
measure: Conversion rate
timeFrame: 24 hours
measure: Number of trocars used during surgery
timeFrame: 24 hours
Secondary outcomes:
Other outcomes:
Locations:
city: Brussels
country: Belgium
facility: CHU Brugmann
Study officials:
affiliation: CHU Brugmann
name: Katleen Jottard
role: PRINCIPAL_INVESTIGATOR
References:
citation: Labat JJ, Riant T, Robert R, Amarenco G, Lefaucheur JP, Rigaud J. Diagnostic criteria for pudendal neuralgia by pudendal nerve entrapment (Nantes criteria). Neurourol Urodyn. 2008;27(4):306-10. doi: 10.1002/nau.20505.
citation: Ploteau S, Salaud C, Hamel A, Robert R. Entrapment of the posterior femoral cutaneous nerve and its inferior cluneal branches: anatomical basis of surgery for inferior cluneal neuralgia. Surg Radiol Anat. 2017 Aug;39(8):859-863. doi: 10.1007/s00276-017-1825-z. Epub 2017 Feb 24.
citation: Beco J, Climov D, Bex M. Pudendal nerve decompression in perineology: a case series. BMC Surg. 2004 Oct 30;4:15. doi: 10.1186/1471-2482-4-15.
citation: 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 Mar;28(3):925-32. doi: 10.1007/s00464-013-3248-1. Epub 2013 Oct 23.
citation: Konschake M, Brenner E, Moriggl B, Hormann R, Bauer S, Foditsch E, Janetschek G, Kunzel KH, Sievert KD, Zimmermann R. New laparoscopic approach to the pudendal nerve for neuromodulation based on an anatomic study. Neurourol Urodyn. 2017 Apr;36(4):1069-1075. doi: 10.1002/nau.23090. Epub 2016 Aug 4.
citation: Robert R, Labat JJ, Bensignor M, Glemain P, Deschamps C, Raoul S, Hamel O. Decompression and transposition of the pudendal nerve in pudendal neuralgia: a randomized controlled trial and long-term evaluation. Eur Urol. 2005 Mar;47(3):403-8. doi: 10.1016/j.eururo.2004.09.003.
citation: Jottard K, Bruyninx L, Bonnet P, De Wachter S. Endoscopic trans gluteal minimal-invasive approach for nerve liberation (ENTRAMI technique) in case of pudendal and/or cluneal neuralgia by entrapment: One-year follow-up. Neurourol Urodyn. 2020 Sep;39(7):2003-2007. doi: 10.1002/nau.24462. Epub 2020 Jul 17.
citation: Jottard K, Bruyninx L, Bonnet P, De Wachter S. A minimally invasive, endoscopic transgluteal procedure for pudendal nerve and inferior cluneal nerve neurolysis in case of entrapment: 3- and 6-month results. The ENTRAMI technique for neurolysis. Int J Colorectal Dis. 2020 Feb;35(2):361-364. doi: 10.1007/s00384-019-03480-2. Epub 2019 Dec 11.