When a bone is repeatedly loaded with low-level forces over an extended period of time, fatigue fractures may occur within the bone. This is due to:
a. Increased stiffness, decreased yield strength, increased permanent deformation
b. Decreased stiffness, increased yield strength, no effect on deformation
c. Decreased stiffness, decreased yield strength, increased permanent deformation
d. Increased stiffness, increased yield strength, no effect on deformation
ANS: C
Repeated loading of bone can cause permanent strain and lead to bone failure. Bone loses stiffness
and strength as a result of creep strain.
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