骨疏松性骨折的定量CT预测

Prediction of Osteoporotic Fracture by Quantitative Computed Tomography

笔者分析了６３例女性骨疏松病例的脊椎平片及ＱＣＴ检查。６３例中伴骨折者２９例。骨折组的椎骨骨矿密度（ＢＭＤ）明显低于无骨折组者（Ｐ＝０．０００６）。笔者认为，以椎骨ＢＭＤ测值９５ｍｇ／ｃｍ￣３作为骨折阈值更适用于中国老龄妇女。６３例中有异位钙化者１８例。有及无异位钙化组的椎骨ＢＭＤ值有显著性差异（Ｐ＜０．０５），ＢＭＤ值越低，发生异位钙化的机会越大。笔者提议把异位钙化作为判断骨疏松的提示性征象。

In this paper,we analysed the plain film of spine and CT bone mineral density(BMD)of lumbar vertebral body in 63 Chinese osteoporotic women. There are 29 and 34 cases with and without fracture respectively in these patients. The average value of BMD in the fracture group was markedly lower than that of the non fracture group (P=0.0006).We suggested that 95mg/cm￣3 may be taken as an appropriate fracture threshold for Chinese elderly women, There were 18 and 45 cases with and without heterogenous calcification respectively in these patients.A significant difference of BMD was found between the two groups(P<0. 05). The lower the BMD, the higher the incidence of heterogenous calcification,The authors were of the opinion that heterogenous calcification may be tak-en as a suggestive sign of osteoporosis。