Roux-en-Y Hepaticojejunostomy: Jejunal Stump Anastomosis
In a Roux-en-Y hepaticojejunostomy, the proximal jejunal stump is anastomosed end-to-side to the bile duct (hepatic duct or common bile duct), creating a biliary-enteric connection that restores biliary drainage into the gastrointestinal tract.
Technical Configuration
The Roux-en-Y hepaticojejunostomy involves creating a Y-shaped configuration where:
- The jejunum is divided approximately 20-30 cm distal to the ligament of Treitz
- The distal (efferent) limb is brought up to the hilum for the biliary anastomosis
- The proximal (afferent) jejunal stump is anastomosed side-to-side to the Roux limb, typically 40-60 cm downstream from the biliary anastomosis, to restore intestinal continuity
This creates the characteristic "Y" shape: bile drains from the hepatic duct → into the Roux limb → which eventually joins with the proximal jejunum carrying pancreatic and duodenal secretions.
Primary Indications and Evidence
Current guidelines strongly support Roux-en-Y hepaticojejunostomy as the definitive treatment for 1:
- Bile duct injuries (particularly iatrogenic post-cholecystectomy injuries)
- Benign biliary strictures
- Choledochal cysts
- Extrahepatic bile duct trauma requiring reconstruction 2
The 2020 WSES guidelines emphasize that tension-free bilioenteric anastomosis with good mucosal apposition and vascularized ducts is the mainstay of treatment 1. This technique has demonstrated superior outcomes compared to late repairs and end-to-end anastomoses, which carry increased failure rates.
Critical Technical Principles
Anastomotic Construction
The biliary-enteric anastomosis should be performed 3, 4:
- End-to-side configuration (bile duct to jejunal limb)
- Using 4-0 or 5-0 absorbable sutures
- Via the Hepp-Couinaud approach when feasible (accessing left hepatic duct at the hilum)
- Ensuring wide, tension-free, mucosa-to-mucosa apposition
Routing Options
The Roux limb can be brought to the hilum via 5:
- Retrocolic-anteduodenal route (traditional)
- Retrocolic-retrogastric route (particularly useful in obese patients with thickened mesentery)
- Antecolic route
The retrocolic-retrogastric approach has been successfully performed in 133 patients without early or late complications related to the reconstruction route 5.
Long-Term Outcomes and Complications
Success Rates
Long-term outcomes are generally favorable 1, 6:
- 78.7% of patients remain symptom-free at 2-13 years follow-up 6
- Overall success rate of 83.3% in the early period 1
Common Complications
Anastomotic stricture remains the most significant late complication 1, 3:
- Incidence: 10-20% in most series (range 4.1-69%)
- Median time to formation: 11-30 months
- Higher rates following bile duct injuries compared to other indications 3
Key risk factors for stricture formation 3:
- Postoperative bile leakage (p = 0.021)
- Early postoperative cholangitis (p < 0.001)
- Associated vascular injury
- Presence of sepsis or peritonitis
Recurrent cholangitis occurs in approximately 39% of patients 3, though most episodes respond to antibiotics and corticosteroids 6.
Biliary cirrhosis develops in 2.4-10.9% of cases 1, representing a serious late sequela.
Clinical Pitfalls to Avoid
Inadequate bile duct length or quality: In cases with short or thin biliary stumps from high strictures or severe injuries, anastomosis to the left hepatic duct at the hilum may be necessary 6
Tension on the anastomosis: This is a primary cause of stricture formation. The Roux limb must be of adequate length (typically 40-60 cm) to reach the hilum without tension 1
Poor vascular supply: Compromised blood supply to the anastomosis significantly increases stricture risk 1
Inadequate follow-up: Strictures develop months to years postoperatively, requiring long-term surveillance particularly in younger patients (<40 years) who show a trend toward higher stricture rates 3
Early postoperative bile leak: This is a strong predictor of subsequent stricture and must be aggressively managed 3
The procedure carries a mortality rate of 1.8-4.6% related to bile duct injury complications 1, emphasizing the importance of referral to tertiary hepatopancreatobiliary centers with appropriate expertise.