What is the purpose of sigmoidopexy?

Sigmoidopexy is a surgical procedure specifically designed to correct sigmoid volvulus, a condition in which a part of the sigmoid colon twists on itself, potentially leading to bowel obstruction and ischemia. The primary purpose of sigmoidopexy is to reposition the twisted segment of the colon and secure it in place to prevent future episodes of volvulus.

In this procedure, the affected segment of the sigmoid colon is typically anchored to the abdominal wall or nearby structures. By stabilizing the sigmoid colon, sigmoidopexy addresses the immediate problem of obstruction and reduces the risk of recurrence, which is critical given that volvulus can lead to significant complications if not treated promptly.

Other choices in this question do not accurately reflect the intent of sigmoidopexy. For instance, treating a perirectal abscess involves drainage and possibly antibiotic therapy, which is not the focus of sigmoidopexy. A colostomy involves creating an opening from the colon to the abdomen for stool passage, which is entirely different from correcting a volvulus. Alleviating constipation typically requires conservative management or different surgical interventions rather than sigmoidopexy, which is a specific corrective measure for volvulus.