Age-related reductions in the strength of the femur tested in a fall-loading configuration

摘要: To assess age-related changes in femoral strength as a component the risk of fracture hip, we compared loads at proximal aspects femora from cadavera older and younger individuals, tested fall-loading configuration. provide basis for non-invasive vivo estimates strength, also determined correlations between variables measured with dual-energy x-ray absorptiometry these loads. Femora eight individuals (mean age, seventy-four years) nine thirty-three were scanned Hologic QDR-2000 densitometer to obtain densitometric geometric information. The then mechanically loading configuration that simulated fall on greater trochanter. group half strong those (p < 0.001), they absorbed one-third much energy 0.001). area bone-mineral density neck correlated strongly load (r2 = 0.92). CLINICAL RELEVANCE: prevalence hip increases exponentially age. 90 percent fractures are result simple standing height.(ABSTRACT TRUNCATED AT 250 WORDS)