Duodenojejunal flexure
Template:Short description Script error: No such module "Infobox".Template:Template otherTemplate:Main other The duodenojejunal flexure or duodenojejunal junction, also known as the angle of Treitz,[1][2] is the border between the duodenum and the jejunum.
Structure
The ascending portion of the duodenum ascends on the left side of the aorta, as far as the level of the upper border of the second lumbar vertebra. At this point, it turns abruptly forward to merge with the jejunum, forming the duodenojejunal flexure. This forms the beginning of the jejunum.[3] The duodenojejunal flexure is surrounded by the suspensory muscle of the duodenum.[4]Template:Rp It is retroperitoneal, so is less mobile than the jejunum that comes after it, helping to stabilise the jejunum.[5]
The duodenojejunal flexure lies in front of the left psoas major muscle, the left renal artery, and the left renal vein. It is covered in front, and partly at the sides, by peritoneum continuous with the left portion of the mesentery.
Clinical significance
The ligament of Treitz, a peritoneal fold, from the right crus of diaphragm, is an identification point for the duodenojejunal flexure during abdominal surgery.[6]Template:Rp
Additional images
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Duodenojejunal fossa.
See also
References
Public domain This article incorporates text in the public domain from Template:Wikidatathe 20th edition of Gray's Anatomy (1918) Template:Main other Template:Reflist
External links
- Anatomy figure: 37:06-04 at Human Anatomy Online, SUNY Downstate Medical Center - "The large intestine."
- Anatomy photo:39:07-0105 at the SUNY Downstate Medical Center - "Intestines and Pancreas: The Duodenum"
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- ↑ Bracale, Umberto et.al. Laparoscopic segmental resection for tumours of the Angle of Treitz: a challenging but feasible surgical option. Results from a retrospective case-series analysis. Updates Surg. 2021; 73(1): 179–186. Script error: No such module "doi".
- ↑ Lissauer et.al. Neonatology at a Glance. John Wiley & Sons, 2020, p.125.
- ↑ Script error: No such module "citation/CS1".
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- ↑ Jacob, S. (2007) Chapter 4: Abdomen; Human anatomy, A clinically-orientated approach.