STARR — Stapled TransAnal Rectal Resection

Perform a digital rectal examination to verify the findings and carefully dilate the anus digitally. During the digital rectal examination, the rectocele can be palpated anteriad, while the posterior wall of the vagina bulges into the rectum. The extent of rectoanal intussusception is assessed with dressing forceps and/or an Allis clamp. Now carefully dilate the anal sphincter with fingers before inserting the anal dilator. Introduce the transparent proctoscope into the anal canal as an anal port and for protection of the anoderm.

Note: The transparent proctoscope (anal port) may be temporarily anchored to the perianal skin with four stitches.

After insertion of the 3/4 anoscope, place the semicircular purse string suture (nonabsorbable monofilament suture 0/0 or 2/0). Depending on the extent of the prolapse, it may require placement of 2-3 semicircular purse string sutures. Place the semicircular suture is placed at least 2cm craniad of the hemorrhoidal zone from about 9 o'clock to 3 o'clock. Unlike in stapler hemorrhoidectomy, the bite goes not only through the mucosa but the full wall of the rectum. Follow this with the first digital examination of the posterior vaginal wall.

Note: Alternatively, take a full bite of the rectal wall with one lock-stitch suture each, at 2-3 o'clock, 12 o'clock and 9 o'clock, which is then tied.

Protect the posterior wall of the rectum with a pediatric spatula at 6 o'clock when closing the stapler. With the circular stapler in its maximum open position, now introduce it into the rectum until the anvil is craniad of the purse string suture. With the suture threader pull the ends of the thread through the stapler housing.

Note: In the alternative technique depicted in the illustration, the ends of the placed suture(s) are pulled through the slots provided for this purpose and the two ends of the fixation suture(s) are separated at 12 o'clock: One thread is added to the fixation stitch at 10 o'clock, the other thread to the fixation stitch at 2 o'clock. This ensures that the central part of the rectal wall is best drawn into the stapler.