Risk of Nerve Damage Affecting Sexual Function After Anorectal Surgery

Post-Surgical Management and Complications

Post-sphincterotomy sexual dysfunction, when it occurs, is neuropathic/myofascial rather than true nerve damage, and responds to physical therapy rather than representing permanent structural injury 1, 2
Altered sensations after lateral internal sphincterotomy represent neuropathic pain and dysesthesia rather than structural sphincter or nerve damage 2
Patients with sexual dysfunction after lateral sphincterotomy typically have intact continence and altered sensations rather than mechanical problems 2
Initiate pelvic floor physical therapy 2-3 times weekly with internal and external myofascial release, gradual desensitization exercises, and muscle coordination retraining 1, 2
Apply topical lidocaine 5% ointment to affected areas for neuropathic pain management 2
Use warm sitz baths to promote muscle relaxation and reduce symptoms 2
Symptoms typically improve significantly over 6-12 months with appropriate therapy 1
Do not pursue additional surgical interventions, as this would likely worsen the neuropathic component 2

Botulinum toxin injection achieves 75-95% cure rates for chronic anal fissures with no risk of permanent incontinence or sexual dysfunction 1, 2
This should be considered after 8 weeks of failed topical therapy as an alternative to lateral sphincterotomy 1, 2

The evidence from prostate and rectal cancer surgery involves deep pelvic dissection that can damage autonomic nerves controlling sexual function 3, 4, 5
These procedures are anatomically and surgically distinct from superficial anorectal procedures like hemorrhoidectomy, fissurectomy, and lateral sphincterotomy, which do not approach the deep pelvic autonomic nerves 3, 4, 5