Roberts J G, DiTomasso E, Webber C E
Invest Radiol. 1982 Jan-Feb;17(1):20-8. doi: 10.1097/00004424-198201000-00004.
The density of trabecular bone in the os calcis has been measured in 321 subjects using a gamma ray scattering technique. In normal subjects it was shown that density could be predicted from body weight and age with a standard error of 5.6%. It was also shown that the dependence of density upon weight and age was the same for both sexes. When the os calcis had been subjected to a greater than normal mechanical stress by either increased physical activity or excessive body weight, trabecular bone density was increased. Density was measured in 128 patients in whom the incidence of skeletal demineralization was expected to be greater than that in control subjects. Some significant reductions in density were observed. It is projected that density measurements might be of value in those situations where, in response to metabolic stress, the rate of loss of mineral from trabecular bone is greater than that from cortical bone.
采用伽马射线散射技术，对321名受试者跟骨中的小梁骨密度进行了测量。在正常受试者中发现，骨密度可根据体重和年龄进行预测，标准误差为5.6%。还发现，男女骨密度与体重和年龄的关系相同。当通过增加体力活动或超重使跟骨承受大于正常的机械应力时，小梁骨密度会增加。对128例预计骨骼脱矿发生率高于对照组的患者进行了骨密度测量。观察到一些显著的骨密度降低情况。预计在那些因代谢应激导致小梁骨矿物质流失速率大于皮质骨的情况下，骨密度测量可能会有价值。
