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The Mechanical Buckling of Curved Arteries*

Hai-Chao Han

* Dedicate to Dr. Y. C. Fung
Department of Mechanical Engineering, University of Texas at San Antonio, Biomedical Engineering Program, UTSA-UTHSCSA, San Antonio, TX 78249; Tel: (210) 458-4952; Fax: (210) 458-6504; E-mail:

Molecular & Cellular Biomechanics 2009, 6(2), 93-100.


Though tortuosity and kinking are often observed in various arteries and arterioles, little is known about the underlying mechanisms. This paper presents a biomechanical analysis of bent buckling in long arterial segments with a small initial curvature using a thick-walled elastic cylindrical arterial model. The critical buckling pressure was established as a function of wall stiffness, wall dimensions, and the axial tension (or axial stretch ratio). The effects of both wall dimensions and axial stretch ratio on the critical pressure, as well as the thin-walled approximation were discussed. The buckling equation sheds light on the biomechanical mechanism of artery tortuosity and provides guidance for the development of new techniques to treat and prevent artery tortuosity and kinking.


Cite This Article

Han, H. (2009). The Mechanical Buckling of Curved Arteries*. Molecular & Cellular Biomechanics, 6(2), 93–100.

This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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