title: New look at about nature, structure and function of Trietz ligament.
abstract: BACKGROUND
  Trietz ligament connects the duodeno-jejunal flexure to the right crus of the diaphragm. There are various opinions regarding the existence of the smooth muscle fibers in the ligament. We want to resolve this complexity with microscopic study of this part in cadavers.
  
  
  METHODS
  This study done on three cadavers in the medical faculty of Isfahan University of Medical Sciences. Three samples of histological specimens were collected from the upper, the central, and the lower parts of Trietz ligament and were stained by H and E staining and Mallory's trichrome stain. Three samples were collected from the regions of exact connection of the main mesentery to the body wall, the intestine, and the region between these two connected regions, and these specimens were stained.
  
  
  RESULTS
  In the microscopic survey, no collagen bundles were observed in the collected samples of the Trietz ligament after the dense muscular tissues. In the samples which were collected to work on collagen tissues stretching from the Trietz ligament to the main mesentery of intestine, no collagen bundles were observed.
  
  
  CONCLUSIONS
  Trietz ligament is connected to the right crus of the diaphragm from the third and the fourth parts of the duodenum. Number of researchers state that there are smooth and striated muscular tissues and some others, with regard to observations of histological phases made from the samples of Trietz muscles, conclude that it can probably be noted that muscular bundles or the dense connective tissue bundles of collagen cannot be observed in the way we imagine.
authors.affiliation: Department of Tissue Engineering, School of Modern Technologies, Tehran University of Medical Sciences, Isfahan, Iran.
authors.forename: Ghorbani
authors.initials: G
authors.lastname: Masoud
authors.affiliation: Department of Anatomy and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
authors.forename: Sadeghi
authors.initials: S
authors.lastname: Hossain
authors.affiliation: Department of Anatomy and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
authors.forename: Rashidi
authors.initials: R
authors.lastname: Bahman
authors.affiliation: Department of Anatomy and Molecular Biology, School of Medicine and Student Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran.
authors.forename: Karimi
authors.initials: K
authors.lastname: Zeinab
authors.affiliation: Department of Anatomy and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
authors.forename: Amouzegar
authors.initials: A
authors.lastname: Fatemeh
keywords: Collagen; Trietz; duodenum