Pudendal nerve release surgery in case of pudendal impingement syndrome is well described in literature.Pudendal nerve modulation in case of chronic perineal pain is also a promising technique and some small studies exist. However, in the latter group, patient inclusion criteria are very heterogenous and so conclusions about efficacy are difficult to draw. In the surgery group, outcome results also vary between the different approaches but in general, there is room for improvement. After pudendal nerve release in chronic perineal pain syndrome, it can take up to 6 months before improvement for the patient is recorded. This is partially due to the complex chronic pain syndrome mechanism. Nothing is known about the possible effect of early neuromodulation at the level of the pudendal nerve after his release. Recently, two cadaveric studies were published which described a minimal invasive trans gluteal approach for pudendal nerve decompression and a pudendal electrode placement. In the present trial, the investigators would like to combine the endoscopic trans gluteal pudendal release with pudendal neuromodulation to improve the outcome for patients suffering from pudendal impingement syndrome. The aim is to improve the results of pain score and quality of life of patients undergoing surgery for pudendal release in case of chronic perineal pain syndrome.
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Maximum Visual Analog Pain scores (VAS)
Timeframe: Change from baseline at first postoperative day
Maximum VAS pain scores
Timeframe: Change from baseline at three weeks of stimulation
Wexner constipation score
Timeframe: Change from baseline at three weeks of stimulation
Fecal incontinence severity index
Timeframe: Change from baseline at three weeks of stimulation
Quality of life assessed by the SF-36 questionnaire
Timeframe: Change from baseline at three weeks of stimulation
Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire (PISQ-IR )
Timeframe: Change from baseline at three weeks of stimulation
Brief Male Sexual Function Inventory (BSFI)
Timeframe: Change from baseline at three weeks of stimulation
Female sexual function index (FSFI)
Timeframe: Change from baseline at three weeks of stimulation
Patient Health Questionnaire Mood Scale (PHQ-9)
Timeframe: Change from baseline at three weeks of stimulation
Score on the DN4 questionnaire
Timeframe: Change from baseline at three weeks of stimulation