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© 1992 Oxford University Press

research-article

Sex Differences in Cancellous and Cortical Bone Strength, Bone Mineral Content and Bone Density

NANCY OYSTER

Sport Science Colorado State University Fort Collins Colorado 80523, USA

The purpose of this study was to examine sex differences in cancellous and cortical bone strength, bone mineral Content (BMC) and bone density of excised cadaver vertebral and phalangeal bones. The samples were age-matched. Bone strength was measured as the mechanical force required to crush or break the bones. Two parameters of bone strength were used on the vertebrae; the force at the first deviation from linearity and the mean force during the consolidation before final failure. The force at first deviation from linearity was not significantly different between the sexes, but there was a significant difference in the consolidation force. The mean men's phalangeal strength was twice that of the women's. BMC and BMC/BW of both types of bone were statistically different between the sexes. Radiographic photodensity measures on the vertebrae showed no sex differences. Cortical diameters of the finger bones were significantly greater in males.

Received February 6, 1992;
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