类风湿关节炎患者的骨质疏松及其相关影响因素

目的探讨类风湿关节炎(RA)患者骨质疏松的发生情况及其相关影响因素。方法采用双能X线骨密度仪,测定53例(男8例,女45例)RA患者和63例(男18例,女45例)正常人的前臂、L2~4以及股骨颈、Ward区和大转子的骨密度,并同时测定RA患者各临床及实验室指标。结果除股骨颈外,RA患者各测定部位的骨密度均明显低于对照组(P<0.05~0.005);18例患者(34.0%)有至少一个检测部位骨质疏松,21例患者(39.6%)表现为至少一个检测部位骨量低下,总体骨量丢失较对照组明显(P<0.05)。53例RA患者中发生骨质疏松组较非骨质疏松组年龄更大(P<0.0001),关节功能更差(P<0.001),HAQ积分更高(P<0.01),握力更低(P<0.05)。28例服用糖皮质激素的RA患者中有46.4%(13/28)发生骨质疏松,高于未服用糖皮质激素组的20.0%(5/25)(χ2=4.113,P=0.043),服用激素组仅L3的骨密度低于未服用激素组(t=2.163,P=0.035)。19例绝经的女性RA患者中有57.9%(11/19)发生骨质疏松,明显高于未绝经女性RA组的15.4%(4/26)(χ2=8.927,P=0.003),除前臂外,绝经的女性RA患者各测定部位骨密度均明显低于未绝经女性RA患者(P<0.05~0.005)。结论RA患者骨质疏松发生率较正常人更高,多部位的骨密度均显著降低。其骨质疏松的发生是多因素的,与年龄、关节炎的严重程度、绝经及服用糖皮质激素等有关。

Study on Osteoporosis in Patients with Rheumatoid Arthritis and Its Related Factors

Objective To investigate the prevalence of osteoporosis (OP) in the patients with rheumatoid arthritis (RA), and the effect of related factors. Methods Bone mineral density (BMD) of non-dominant forearm, lumbar vertebrae (L2-4) and hip was measured by dual energy X-ray absorptiometry in 53 patients with RA and in 63 healthy subjects. Some clinical and laboratory factors were also measured in the meantime. Results BMD of all the detected sites in RA was significant lower than that in the controls, except BMD...