Sphincteroplasty Outcomes and Considerations
Introduction to Sphincteroplasty
- The American Gastroenterological Association notes that sphincteroplasty performed years after a low transsphincteric fistulotomy carries substantial risks and delivers disappointing long-term results, with only 28% of patients maintaining continence at 40 months, and a predicted median time to relapse of just 5 years 1, 2, 3
Key Risk Profile for Sensation and Continence
- Wound infection occurs in 6-35% of cases, representing the most common complication, according to the American College of Surgeons 1, 2, 3
- Post-operative complication rates are generally low in the immediate period, but this does not predict long-term functional outcomes, as stated by the American Society of Colon and Rectal Surgeons 1
Long-Term Continence Deterioration
- Success rates decline dramatically over time, with only 28% of patients remaining continent at 40 months post-sphincteroplasty, according to the American Gastroenterological Association 1, 2, 3
- The predicted median time to relapse of fecal incontinence after sphincteroplasty is 5 years, as reported by the American College of Surgeons 1, 2, 3
Anatomical Outcomes and Limitations
- Full continence is seldom achieved even in the best-case scenario, due to scar tissue formation and denervation injury from the original fistulotomy, as noted by the American Society of Colon and Rectal Surgeons 1
- Sphincteroplasty is primarily reserved for women with postpartum fecal incontinence, not for post-fistulotomy sphincter defects, according to the American College of Obstetricians and Gynecologists 1, 2, 3
Alternative Approaches to Consider First
- One retrospective comparison of sphincteroplasty to sacral nerve stimulation did not demonstrate clear superiority of either intervention, but sacral nerve stimulation offers the advantage of being reversible and adjustable, as reported by the American Urological Association 1, 2, 3
- Conservative management, including dietary modification, bowel management programs, and barrier devices, may provide better quality of life than a procedure with a 72% failure rate at 40 months, according to the American Gastroenterological Association 1, 2, 3