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_______________________ This diagram illustrates the anatomy of the area. We have added circles to indicate the 3 areas where nerve entrapment is likely to occur.
Legend 1. Sacro-spinal ligament 2. Sacro-tuberous ligament 3. Alcock's canal (or pudendal canal) with the pudendal nerve 4. Nerve of the clitoris 5. Perineal branch of the pudendal nerve 6. Anal branch of the pudendal nerve 7. Arcus tendineus fascia pelvis 8. Obturator muscle 9. Piriformis muscle S2, S3 and S4: sacral roots forming the pudendal nerve
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