Obesity Surgery

, Volume 26, Issue 8, pp 1705–1709 | Cite as

Common Limb Length Does Not Influence Weight Loss After Standard Laparoscopic Roux-En-Y Gastric Bypass

  • Benoit Navez
  • Theodoros Thomopoulos
  • Irina Stefanescu
  • Laurent Coubeau
Original Contributions



Although Roux-en-Y gastric bypass (RYGBP) has proven its reliability over time in terms of weight loss and resolution of comorbidities, there continues to be a significant controversy in terms of used limb lengths. In the classical RYGBP, most surgeons have reported an alimentary limb length (ALL) of 100 to 150 cm and a bilio-pancreatic limb length (BPLL) of 50 to 75 cm. On the other hand, the common limb length (CLL) remains unknown in all the patients. As it is theoretically related to the level of malabsorption, CLL could influence weight loss after RYGBP.

Materials and Methods

We performed a laparoscopic RYGBP in 90 patients with a mean preoperative body mass index (BMI) of 44.8. ALL and BPLL were respectively fixed at 150 and 75 cm. A systematic intraoperative measurement of CLL was performed.


As expected, we found a great variation of the jejuno-ileal length and also of the CLL. We created three subgroups of patients: one with the entire population, one excluding the super-obese patients (BMI > 50) and the third one excluding the revisions. There was no statistically significant correlation between CLL and excess BMI loss (EBMIL) at 1, 3, 6 and 12 months of follow-up in each group. We also found a linear correlation between the jejuno-ileal length and the height of individuals.


With a fixed 150-cm ALL and a 75-cm BPLL, there is no evidence that the anatomical variations of CLL could influence weight loss after classical RYGBP.


Roux-en-Y laparoscopic gastric bypass Common limb length Malabsorption Excess weight loss Alimentary limb length Biliopancreatic limb length 


Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no competing interests.

Ethics Approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.Informed consent was obtained from all individual participants included in the study.


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Benoit Navez
    • 1
  • Theodoros Thomopoulos
    • 1
  • Irina Stefanescu
    • 1
  • Laurent Coubeau
    • 1
  1. 1.Oesogastroduodenal and Bariatric Unit, Department of Abdominal Surgery and TransplantationCliniques Universitaires Saint-LucBrusselsBelgium

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