【摘要】 目的调查成都地区城乡人群腰椎、髋部骨密度（BMD）和原发性骨质疏松症（OP）的 患病率及影响因素。方法用整群随机抽样≥20岁人群共1 460人，采用DEXA测量L 2～4和股 骨近段BMD值，按城乡、男女分别每10岁一个年龄组进行统计分析。结果骨量峰值（PBM）在 20～39岁，男性L2～4为(1.120±0.118)g/cm2，女性为(1.113±0.111)g/cm2。随年龄增加 ，40岁后各类人群BMD逐渐下降，女性明显大于男性（P< 0.01）。结论年龄、性别和居住地 区是影响BMD的重要因素。更多还原

【Abstract】 Objective To investigate the morbidity of osteoporosis and factors affe cting lumbar spine and bone mineral density(BMD).Method Dual energy X－ray absor ption－metry was used to measure the bone mineral density(BMD)of the lumber spin e and proximal femur in 1 460 normal persons in Chengdu district(aged 20 and ove r,662 in the city and 798 in the countryside).Result This cross－section study s howed that the peak bone mass(PBM),either male or female,occurred in age group o f 20～39 years old.The value of BMD in male was (1.120±0.118)g/cm2,1.113±0.111 g/cm2 in female.Bone loss began at 40 years old.Bone loss began at 40 years old .Bone loss rate in female was faster than that in male at all sites (P< 0.001).C onclusion For prevention of OP,it is worthy of enhancing PBM by proper diet and exercise during the supplement of calcium and estrogen are very important for th e rural women especialy for the postmenstural women.更多还原