[The relationship between bone mineral density and secondary hyperparathyroidism bone disease].
The bone mineral density (BMD) and Z score in distal 1/3 radius were measured with dual energy X-ray absorptiometry (DEXA) in 185 hemodialysis (HD) patients, meanwhile serum parathyroid hormone (PTH), alkaline phosphatase (ALP) and hand X-rays were detected. Results showed that BMD in HD patients was significantly lower than that in control group(P < 0.05), and decreased with dialysis duration increasing. BMD in HD patients was negatively related with PTH, ALP and rate of subperiosteal erosions. By using Z score to diagnose hyperparathyroidism bone disease, receiver operating characteristic (ROC) curve was worked out. If Z score < or = -2.02, the sensitivity was 79.41% and specificity was 78.15%. In conclusion the measurement of BMD is a useful tool for the detection of hyperparathyroid bone disease.