摘要：Postcranial skeletons were observed and measured on 87 adult Japanese macaques of known chronological age. Forty-three individuals were sacrificed after laboratory experiment. Significant linear regressions against age were observed on diameters and measurements of cross-sectional geometry at mid-length of the humerus and the femur. The older bones showed geometrically greater robusticity against the bending and torsional moments. The materials from the experimentally sacrificed animals showed the same tendency. Geometrical robusticity will compensate the weakening of the bone substance with aging. Articular surfaces and epiphyses also became large with aging. The large ends will again compensate the weakening of the substance in these parts of bone. Females had smaller and more gracile bones than males through the age ranges of adulthood. Many epiphyseal unions belonging to the trunk unite after the maturation of appendicular limb bone length. A great deal of variation was noted in the union completion of adult individuals.
关键词：aging;robustness;long bone diameter;epiphyseal union;Macaca fuscata
