Anal Surgery for Hemorrhoids Technique

Updated: Jul 12, 2021
  • Author: Vassiliki Liana Tsikitis, MD, MCR, MBA, FACS, FASCRS; Chief Editor: Kurt E Roberts, MD  more...
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Rubber Band Ligation

The procedure is performed through an anoscope with a rubber band ligator. Using a Lurz-Goltner suction hemorrhoidal ligator, draw the hemorrhoid mass into the cup with suction. The most prominent hemorrhoid with acute stigmata of bleeding is treated first. Place the band on the rectal mucosa at the base of the internal hemorrhoid (see the image below). Ensure that the patient has no feeling of pain. Perform ligation one site at a time. Band consecutive hemorrhoids in a similar fashion, going from largest to smallest.

Rubber band ligation. Image reproduced from origin Rubber band ligation. Image reproduced from original with permission of the American Society of Colon & Rectal Surgeons.

The patient rarely experiences pain during the procedure. If the patient does experience pain, the band must be removed immediately. Conventional suture-removal scissors can be inserted to cut the band from the hemorrhoids. Other methods of cutting the band can be used, such as a scalpel, but this tends to precipitate bleeding.



Infrared photocoagulation

An infrared photocoagulator produces infrared radiation, coagulates tissue protein, and evaporates water in the cells. The advantage of infrared coagulation is that the physician may treat one area at a time or ablate all hemorrhoidal areas.

Infiltrate the area with 2-5 mL of 0.5% bupivacaine. The area to be treated can be visually determined; adjust the dosing of the local anesthetic accordingly.

Apply an infrared probe just proximal to the internal hemorrhoids through an anoscope. The standard recommendation is to apply the probe for 1.5 seconds and repeat the application three times on each internal hemorrhoid. [9, 10, 11, 12, 13, 14]  The radiation causes protein coagulation in an area 3 mm wide and 3 mm deep, for a use of three to five pulses.

After the coagulation, the tissue appears white and circular in nature. It progresses to a darker color over the following week. Eventually, a slightly elevated, pink-red eschar results.

Bipolar electrocoagulation

Bipolar electrocoagulation is similar to infrared photocoagulation. It is simple to use and is typically done as an outpatient procedure. No anesthesia is typically required. However, this procedure is typically time-consuming and is not as popular as other treatment options. [15, 16, 17, 18]

Using the anoscope, apply the side of the probe tip directly to the hemorrhoid, above the dentate line (see the image below). Use the infinity setting on the electrode generator. This is activated by the physician with a foot switch. A white coagulum stream is generated that is approximately 3 mm deep. Set the current to a maximal tolerable level and continue for 10 minutes. All hemorrhoids are typically treated in a single session.

Electrocoagulation for hemorrhoids. Image reproduc Electrocoagulation for hemorrhoids. Image reproduced from original with permission of the American Society of Colon & Rectal Surgeons.


Sclerotherapy involves the injection of chemical agents into the hemorrhoids to create fibrosis and prevent prolapse. The solutions used are phenol in oil, quinine urea, and sodium morrhuate. Sclerotherapy used to be the treatment of choice for grade I, II, and III hemorrhoids. It has been used with rubber band ligation with increased success rates. [19, 20, 21, 22, 23, 24, 25, 26]

Attach a 10-mL syringe to a standard-sized 25-gauge angled hemorrhoid needle. Introduce the needle into the center mass of veins, through the mucous membrane. Take care not to enter the lumen of the vein or traverse the sensitive margin of the dentate line. To ensure that the needle does not enter the lumen, draw it back before injecting. No antiseptic is necessary.

When the needle is in position, inject 0.5 mL of the sodium morrhuate or 5% phenol solution into the submucosa above the internal hemorrhoid, at the anorectal ring. Do not inject intravascularly. If the sodium morrhuate solution is used, the total amount injected should be no more than 3 mL. If the 5% phenol solution is used, up to 3 mL can be injected into each site.



Cryotherapy uses a special probe that uses nitrous oxide to freeze the hemorrhoid. The temperature of the probe can get as low as –196˚C with liquid nitrogen. Cryotherapy was once advocated by many surgeons for the treatment of hemorrhoids and was associated with the least amount of pain.

Insert and manipulate the fingers, a modified plastic proctoscope, or a vaginal speculum so as to isolate one primary hemorrhoidal plexus at a time. A metal instrument is not recommended, because it conducts cold, and the procedure is reliant on a water-soluble jelly that is used for contact between the probe and the hemorrhoid.

Apply the cryoprobe so that the tissue freezes around the tip. The distance between the tip and the outer portion of the probe is equal to the depth of the probe. This allows the surgeon to visually determine how much tissue is being destroyed. Changes that occur in the margin of space between the tip of the probe and the normal tissue are reversible; theoretically, therefore, no destruction has taken place.

Considerable edema can result within 24 hours after the procedure. This swelling does not interfere with the patient’s ability to have a normal bowel movement.

Drainage of the area from the degradation and breakdown of tissue begins several hours after the procedure. It starts out fairly heavy for the first 3-4 days and decreases over the next 2-3 weeks. Instruct patients to use a clean or sterile pad, changed several times a day, for the first 3-4 days. This aids in the prevention of infection.

By postoperative day 5 or 6, the hemorrhoid appears pale and black. Gangrenous areas may appear, but the necrosis is typically complete by postoperative day 7-9. By postoperative day 18, the area disintegrates completely, leaving a normal-appearing anus.


Open or Closed Hemorrhoidectomy

Hemorrhoidectomy allows full-thickness excision of mucosa and submucosa without injury to the underlying sphincter muscle. If, at the end of the procedure, the mucosa is closed with an absorbable suture, the procedure is a closed hemorrhoidectomy (see the first image below); if the mucosa is left open, the procedure is an open hemorrhoidectomy (see the second image below). Because of its relatively low recurrence rate, excisional hemorrhoidectomy remains the gold standard treatment.

Closed hemorrhoidectomy. Image reproduced from ori Closed hemorrhoidectomy. Image reproduced from original with permission of the American Society of Colon & Rectal Surgeons.
Open hemorrhoidectomy. Image reproduced from origi Open hemorrhoidectomy. Image reproduced from original with permission of the American Society of Colon & Rectal Surgeons.

Make an elliptical incision at the perianal skin, and continue it to the anorectal ring in a vertical fashion. The incision should include the internal and external hemorrhoids. At all times, ensure that the submucosa is lifted from the underlying sphincter complex without injury to the muscles. The resection can be performed with a surgical scalpel, a diathermy, a laser, or an ultrasonic scalpel. [27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38]

Patients are typically sore for as long as 3-10 days after surgery. For pain control, prescribe oral narcotics and, if necessary, a topical anesthetic cream.


Transanal Hemorrhoidal Artery Ligation

Doppler-guided hemorrhoidal artery ligation (HAL), [39, 40]  a procedure first described in 1995, involves the use of a proctoscope that allows the insertion of a Doppler transducer through it.

There are, on average, eight hemorrhoidal arteries (all branches of the superior hemorrhoidal artery) that are located in the submucosa within 2 cm of the dentate line. These arterial branches are identified by means of the Doppler device and ligated with an absorbable suture. In the case of grade III or IV hemorrhoids, a mucopexy is also performed to prevent prolapse. [41] This procedure is typically performed in the operating room with the patient under either general or locoregional anesthesia. (See the image below.)

Transanal hemorrhoidal artery ligation (HAL). Mark Transanal hemorrhoidal artery ligation (HAL). Marking of rectal mucosa at location of best Doppler signal to identify site for ligation of hemorrhoidal artery and subsequent mucopexy. Courtesy of SpringerNature, Springer International Publishing AG.

Stapled Hemorrhoidopexy

In a stapled hemorrhoidopexy, a modified circular stapler resects the excess prolapsed hemorrhoidal tissue and fixes the rest of hemorrhoidal tissue to the distal rectal wall (see the image below).

Stapled hemorrhoidopexy. Image reproduced from ori Stapled hemorrhoidopexy. Image reproduced from original with permission of the American Society of Colon & Rectal Surgeons.

Insert a circular anal dilator, and anchor it to the skin with a heavy suture on a cutting needle. Apply countertraction to the skin to facilitate insertion.

Introduce the purse-string suture anoscope through the circular anal dilator. The rotation effect of the suture anoscope allows the placement of a purse-string suture in a circular fashion at the correct height (3-4 cm above the dentate line) and depth (mucosa and submucosa). Place small bites close together with a 2-0 monofilament suture on a 25-30 mm curved needle. No “dog-ears” or gaps should be present.

Insert the fully open stapler head through the purse-string, and throw one knot on the purse-string. Then, draw back the two tails of the suture through the lateral channels in the head of the anvil. Further secure the purse-string under direct visualization. Knot the tails or clamp them with forceps.

Align the stapler along the axis of the anal canal and close it while maintaining downward tension with the lateral tails. The 4 cm mark should be at the level of the anal verge. If the patient is female, pass a finger into the vagina to ensure the posterior wall is not caught in the stapler. Fire the stapler, then open the head and remove the stapler. Inspect the staple line for bleeding and reinforce the staples, if needed.

Multiple studies have shown that in comparison with open or closed hemorrhoidectomy, stapled hemorrhoidopexy results in less pain and faster return to normal activity. [42, 43, 44]  Some authors suggest that stapled hemorrhoidopexy presents an increased risk of septic complications (eg, rectal perforation, pelvic sepsis, persistent severe pain and fecal urgency, rectal stricture, rectal obstruction, and rectovaginal fistula). There is no evidence to suggest that prophylactic antibiotics are appropriate or helpful. Because of its high recurrence rates, stapled hemorrhoidopexy is not performed at the authors’ institution; excisional hemorrhoidectomy is preferred.

Partial stapled hemorrhoidopexy has been suggested as a viable alternative to circular stapled hemorrhoidopexy for some patients with grade III-IV proplapsing hemorrhoids. [45]  In this procedure, only the mucosa and submucosa overlying the hemorrhoidal columns are included, so as to create a partial purse-string rather than a circumferential purse-string. In theory, using fewer staples could lead to less inflammation and possibly decreased postoperative pain, tenesmus, incontinence, and fistula risk. At present, however, the available long-term data are insufficient for full evaluation of these outcomes. [45, 46, 47]



Office treatments

Complications of rubber band ligation may include the following:

  • Bleeding (3%; higher rates in patient taking aspirin or nonsteroidal anti-inflammatory drugs [NSAIDs] and blood thinners)
  • Thrombosed external hemorrhoids (2%)
  • Bacteremia (0.09%)
  • Posthemorrhoidal banding sepsis (rare complication characterized by fever and severe pelvic pain)

No additional complications are associated with doing more than one rubber band ligation of more than one site, and this approach can be more cost-effective. [48, 49, 50, 51, 52, 53, 54, 55]

Complications of cryotherapy may include the following:

  • Pain
  • Tissue necrosis
  • Very long healing time
  • Destruction of the anal sphincter muscle (which can cause anal stenosis or incontinence; therefore, this method is not frequently used [56, 57, 58, 55] )

Complications of other office treatments may include the following:

  • Anal stenosis
  • Anal incontinence

Surgical treatments

Complications of hemorrhoidectomy may include the following [27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37] :

  • Bleeding
  • Urinary retention
  • Incontinence

Complications of stapled hemorrhoidopexy include the aforementioned complciations, as well as the following:

  • Rectovaginal fistulas
  • Substantial hemorrhage
  • Retroperitoneal sepsis

A complication specific to HAL is hemorrhoid thrombosis. This is often treated with thrombectomy for pain relief. [7]