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Decompression of Pudendal and Inferior Cluneal Nerves Using Robot-assisted Laparoscopy for Entrapment Neuralgias : the X-DECO Study

Decompression of Pudendal and Inferior Cluneal Nerves Using Robot-assisted Laparoscopy for Entrapment Neuralgias: Results After 1 Year of Follow-up (the X-DECO Study)

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06578767
Acronym
X-DECO
Enrollment
200
Registered
2024-08-29
Start date
2024-07-31
Completion date
2033-07-01
Last updated
2026-08-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pudendal Neuralgia

Keywords

pudendal, inferior cluneal, robot, surgery, decompression, neurolysis, laparoscopy

Brief summary

The objective of our study is to evaluate the efficacy of the laparoscopic robot-assited approach after 1 year of follow-up, on pain experience, and anxiety, depression, post-traumatic stress syndrome and quality of life.

Detailed description

Pudendal and inferior cluneal neuralgias are responsible for chronic pelvic perineal pain. The compression of both of the nerves are thought to be associated in approximately 25% of the pudendal neuralgias. The failure of the isolated pudendal decompression led in the early 2000s to the identification of an entrapment syndrome of the posterior femoral cutaneous nerve and its inferior cluneal branche around the ischial tuberosity. This subsequent neuralgia affects the posterior part of the perineum, lower buttock, and the posterior part of the thigh, without any associated neuro-vegetative symptoms, unlike in pudendal neuralgia. In case of failure of the medical treatment, the open trans-gluteal decompression was proposed as a gold standard. However, this technique remains invasive and requires a long recovery. In a previous study, the investigators demonstrated the feasibility of double decompression via a minimally invasive robot-assisted laparoscopic approach, and described a 4-step technique.

Interventions

None listed

Sponsors

UBOSGA
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients over 18 years old * Patients presenting a pudendal and inferior cluneal entrapment neuralgia with 5 positive"Nantes criteria", and failure of the medical treatment * Patient having given consent after reading the information note

Exclusion criteria

* Absence of any "Nantes criteria", * Patient non suitable for surgery/general anesthesia

Design outcomes

Primary

MeasureTime frameDescription
Evaluate the efficacy of the surgical technique on pain experience related to pudendal and inferior cluneal chronic entrapment neuralgias, using a composite criteria (Numeric pain scale, time seated, PGIC score)Pré-operatively, 2 days, 4 months, 1 year after surgeryNumeric pain scale (0 "no pain" to 10 "maximal pain"), time seated (\> 30 min,\> 60min or unlimited) Patients' Global Impression of Change (PGIC) scale (1 "very hightly improved" to 7 "very hightly worsened") are combined to create a composite criteria (significant improvement to complete improvement)

Secondary

MeasureTime frameDescription
Report all complications during the follow-up2 days, 4 months, 1 year, 2 years, 3 years, 4 years and 5 years after surgeryComplications are evaluated with Clavien-Dindo classification (Grade I to V(death))
Evaluate the effect of the surgical technique on anxietyPré-operatively, 2 days, 4 months, 1 year, 2 years, 3 years, 4 years and 5 years after surgeryAnxiety is evaluated with STAI (State Trait Anxiety Inventory-form) (anxious personality since STAI score 51 for women, and score 61 for men)
Evaluate the effect of the surgical technique on depressionPré-operatively, 2 days, 4 months, 1 year, 2 years, 3 years, 4 years and 5 years after surgeryDepression is evaluated with Beck inventory (mild to moderate depression since score 10, moderate depression since score 19, severe depression since score 30)
Evaluate the effect of the surgical technique on post-traumatic stress syndromePré-operatively, 2 days, 4 months, 1 year, 2 years, 3 years, 4 years and 5 years after surgeryPost-traumatic stress syndrome is evaluated with PCL-5 (post-traumatic stress disorder checklist with a PTSD since score 38
Evaluate the impact on quality of lifePré-operatively, 2 days, 4 months, 1 year, 2 years, 3 years, 4 years and 5 years after surgeryQuality of life is evaluated with SF-36 (36-item Short Form Health Survey)
Long-term efficacy of the surgical technique on pain experience using the composite criteria24, 36, 48 and 60 months after surgery (24 months ± 2 months; 36, 48 and 60 months ± 3 months)Numeric pain scale (0 "no pain" to 10 "maximal pain"), time seated (\>30 min, \>60 min or unlimited) and Patients' Global Impression of Change (PGIC) scale (1 to 7) are combined into a composite criterion (significant to complete improvement), assessed annually from 2 to 5 years after surgery.

Countries

France

Contacts

CONTACTOlivier Celhay, M.D
celhay.ubsg33@gmail.com+33(0)5 56 11 61 44
PRINCIPAL_INVESTIGATOROlivier Celhay, M.D

UBOSGA

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 5, 2026