Abstract:
:Fractures that result from torsional loading of shafts in mechanical systems of nonbiologic materials generate a fracture line that forms a 45 degrees angle to an axis that is perpendicular to the direction of torsional loading on the shaft. As tension and compression are applied to these isotropic substances, the angle of fracture increases and decreases, respectively. Understanding how these forces, particularly compressive forces, generate elongation of a spiral fracture increases the ability to predict the extent of injury to bone. Fibular and metatarsal fractures are of primary importance to the podiatric physician, but any spiral fracture may be subject to torsional loading. Thus the principles stated here apply to the entire skeletal system. The purpose of this article is to provide a better understanding of the mechanics behind the causes and characteristics of fractures and to explore whether these same factors apply to the fracture mechanics of bone.
journal_name
J Am Podiatr Med Assocjournal_title
Journal of the American Podiatric Medical Associationauthors
VanCourt RB,Byron SE,Ali SJ,Caldwell BDdoi
10.7547/87507315-90-4-167subject
Has Abstractpub_date
2000-04-01 00:00:00pages
167-74issue
4eissn
8750-7315issn
1930-8264journal_volume
90pub_type
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