stress fracture

fracture in the feet caused by over straining them

This article is about stress fractures in bones. For stress fractures in engineering, see fracture and fatigue (material). A stress fracture is one type of incomplete fractures in bones. It could be described as a very small sliver or crack in the bone; this is why it is sometimes dubbed "hairline fracture". It typically occurs in weight-bearing bones, such as the tibia (bone of the lower leg) and metatarsals (bones of the foot). It is a common sports injury.
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Stress fracture n. A fatigue fracture of bone caused by repeated application of a heavy load, such as the constant pounding on a surface by runners, [more]Stress fracture - Community and Resources

Noun
1. fracture resulting from excessive activity rather than a specific injury
(synonym) fatigue fracture
(hypernym) fracture, break

A break, especially a hairline or microscopic break, in a bone that has undergone continual nonviolent stress.