Suspensory muscle of the duodenum
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2008-05-23T14:20:30Z
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{{Infobox Anatomy |
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Latin = musculus suspensorius duodeni |
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Caption = Duodenojejunal fossa. (Suspensory muscle of the duodenum not labeled, but region is visible.) |
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DorlandsPre = m_22 |
DorlandsSuf = 12551047 |
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The '''suspensory muscle of the duodenum''' is the proper name of what is commonly known as the '''ligament of Treitz''' (named for [[Václav Treitz]]), and it refers to tissue that connects the [[duodenum]] of the [[small intestines]] to the [[diaphragm (anatomy)|diaphragm]]. It is also known as the '''suspensory ligament of the duodenum'''.
==Structure==
It arises from the [[connective tissue]] around the stems of the [[celiac trunk]] and [[superior mesenteric artery]] and inserts into the third and fourth portions of the duodenum and frequently into the duodenojejunal (DJ) flexure (between the duodenum and the [[jejunum]]) as well. Composed of a slip of skeletal muscle from the left<ref>[http://dictionary.reference.com/browse/ligament%20of%20Treitz ligament of Treitz - Definitions from Dictionary.com<!-- Bot generated title -->]</ref> [[crus of the diaphragm]] (sometimes reported as the right crus<ref name="titleMedcyclopaedia - Ligament of treitz">{{cite web |url=http://www.medcyclopaedia.com/library/topics/volume_vii/l/ligament_of_treitz.aspx |title=Medcyclopaedia - Ligament of treitz |accessdate=2007-12-08 |format= |work=}}</ref><ref name="isbn0-397-51532-4">{{cite book |author=Keith D. Lillimoe; Greenfield, Lazar J.; Mulholland, Michael W. |title=Essentials of Surgery: Scientific Principles and Practice |publisher=Lippincott Williams & Wilkins |location=Hagerstwon, MD |year=1997 |pages=209 |isbn=0-397-51532-4 |oclc= |doi=}}</ref>) and a fibromuscular band of smooth muscle from the third and fourth parts of the duodenum, when it contracts, it has the effect of opening the DJ flexure and permitting the flow of [[chyme]].
While commonly referred to as a ligament, it is officially both a ''suspensory muscle'' and a ''suspensory ligament'' due to its composition and function.
==Clinical significance==
This muscle/ligament is an important [[anatomy|anatomical]] landmark of the duodenojejunal junction, used to divide the [[GI tract]] into an upper portion and a lower portion.
It is an especially important landmark to note when looking at the bowel for the presence of [[Intestinal_malrotation | malrotation of the gut]], a syndrome often suspected in young children when they have episodes of recurrent vomiting. Visualizing a normal location of the ligament of Treitz in radiological images is critical in ruling out malrotation of the gut in a child; it is abnormally located when malrotation is present. An abnormally high and fixed position of the ligament of Treitz is a known cause of [[Superior Mesenteric Artery Syndrome]]. However, identifying it on a [[Computed tomography|CT scan]] is difficult.<ref name="pmid17653583">{{cite journal |author=Kim SK, Cho CD, Wojtowycz AR |title=The ligament of Treitz (the suspensory ligament of the Duodenum): anatomic and radiographic correlation |journal=Abdom Imaging |volume= 33|issue= |pages= 395|year=2007 |pmid=17653583 |doi=10.1007/s00261-007-9284-3}}</ref>
==References==
{{reflist}}
==External links==
* {{eMedicineDictionary|suspensory+muscle+of+duodenum}}
{{digestive-stub}}
{{Digestive tract}}
[[Category:Digestive system]]
[[nl:Ligament van Treitz]]
[[pl:Więzadło Treitza]]