Pudendal Nerve Injury (S2-S4)

Overview


Plain-Language Overview

Pudendal Nerve Injury (S2-S4) affects a nerve that controls sensation and muscle function in the pelvic area, including the genitals and anus. This nerve is important for urinary and fecal continence as well as sexual function. When injured, people may experience pain, numbness, or weakness in these regions. The injury can result from trauma, surgery, or prolonged pressure on the nerve. This condition impacts the nervous system and can significantly affect quality of life by causing difficulties with bladder and bowel control and sexual health.

Clinical Definition

Pudendal Nerve Injury (S2-S4) is a neuropathy involving damage to the pudendal nerve, which arises from the sacral nerve roots S2 to S4. The injury typically results from mechanical compression, stretch, or trauma during childbirth, pelvic surgery, or prolonged sitting. This nerve provides motor innervation to the external urethral and anal sphincters and sensory innervation to the perineum, external genitalia, and anus. Clinically, the injury manifests as pelvic pain, sensory loss, and sphincter dysfunction leading to urinary or fecal incontinence and sexual dysfunction. The condition is significant due to its impact on pelvic floor function and quality of life. Diagnosis requires careful clinical evaluation and exclusion of other causes of pelvic neuropathy.

Clinical Presentation


Diagnostic Workup


Pathophysiology


Treatments


Prevention


Outcome & Complications


Differential Diagnoses


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