[Correlation between kidney deficiency syndrome and bone density].

In order to study the relationship between Kidney Deficiency Syndrome (KDS)and bone density (BD), the BD of 2068 subjects (40-69 years old)was measured with SPA-IIC type monophoton BD scanning device made in China. The subjects including 1144 cases of KDS (320 males and 824 females); 608 cases without KDS (306 males and 302 females); 164 cases of Lung Deficiency (80 males and 84 females); 152 cases of Spleen Deficiency (76 males and 76 females). Through comparison with the same sex and age group, it was found that BD in KDS patients was significantly lower than that in the normal subjects and those without KDS, also lower than that in the Lung and Spleen Deficiency patients. It indicated that KDS had the corresponding BD changes, which confirmed the TCM classical theory "The Kidney governs the bone". Based on the measuring data, the authors took the lower limit of BD normal value minus two folds of SD as the critical value for KDS diagnosis in 40-49 years age group, i. e., male BD < 0.6 g/cm2, female BD < 0.5 g/cm2. The clinical feedback showed that the male and female related coincident rates were 76% and 80% respectively. Therefore, the critical value could be taken as an objective index for KDS diagnosis after excluding other affecting factors.