Fatigue of immature baboon cortical bone.
J Biomech
; 18(4): 297-304, 1985.
Article
em En
| MEDLINE
| ID: mdl-4019527
Strain-controlled uniaxial fatigue and monotonic tensile tests were conducted on turned femoral cortical bone specimens obtained from baboons at various ages of maturity. Fatigue loading produced a progressive loss in stiffness and an increase in hysteresis prior to failure, indicating that immature primate cortical bone responds to repeated loading in a fashion similar to that previously observed for adult human cortical bone. Bone fatigue resistance under this strain controlled testing decreased during maturation. Maturation was also associated with an increase in bone dry density, ash fraction and elastic modulus. The higher elastic modulus of more mature bone meant that these specimens were subjected to higher stress levels during testing than more immature bone specimens. Anatomical regions along the femoral shaft exhibited differences in strength and fatigue resistance.
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Base de dados:
MEDLINE
Assunto principal:
Osso e Ossos
/
Desenvolvimento Ósseo
Limite:
Animals
Idioma:
En
Ano de publicação:
1985
Tipo de documento:
Article