原发性骨质疏松患病率调查

目的：了解原发性骨质疏松症(primary osteoporosis.POP)的患病率。方法：选取235名志愿者，男性97名，女性138名，年龄19—79岁，平均53．22岁。运用Scanner SN 3314对跟骨的骨质密度(BMD)进行测量。结果：男性BMD高于女性，有统计学意义(P＜0．01)；男女的BMD随着年龄的增长均降低。POP患病率女性高于男性，女性急病率在60岁以后明显增加。     

钙感觉受体基因A986S多态性与中国男性骨密度相关性研究

目的：研究钙感觉受体(CaSR)基因A986S位点多态性与中国男性骨密度(BMD)的关系。方法：采用双能X线吸收仪对374名研究对象进行腰椎及股骨扫描,应用PCR-限制性片段长度多态性(PCR-RFLP)方法检测CaSR基因A986S位点多态性基因型,用广义线性模型分析A986S多态性与腰椎2～4及股骨骨密度关系。结果：在调整环境危险因素前后,均未发现CaSR基因的A986S位点多态性与男性股骨颈、股骨柄和股骨三角区及腰椎2～4的骨密度呈相关性。结论：在中国男性人群中CaSR基因A986S多态性与股骨及腰椎骨密度无显著性相关。     

材料和孔隙率对可降解支架内骨形成的影响

目的 研究可降解支架植入人体后的骨修复,不同材料和孔隙率对支架内骨形成的影响.方法 根据骨折愈合自然反应机理,运用有限元方法,结合支架几何结构,搭建以材料降解曲线和骨重建控制方程为基础的计算耦合模型.通过这一平台,选择5种材料、4种孔隙率的支架代表性体积元进行计算模拟分析,并通过骨密度和支架最大应力反映这一动态过程.结...     

蛇床子总黄酮对去卵巢骨质疏松大鼠股骨骨密度及生物力学的影响

目的探讨蛇床子总黄酮对去卵巢（OVX）骨质疏松大鼠股骨骨密度及股骨生物力学的影响。方法40只6、7月龄雌性SD大鼠随机分为4组：假手术（SHAM）组,去卵巢（OVX）组,OVX＋已烯雌酚（E）组和OVX＋蛇床子总黄酮组,每组10只。实行手术后,于术后第三天开始灌胃用药。90天后处死大鼠,取左测股骨进行股骨骨密度和股骨生物力学的测量。结果去卵巢后股骨骨密度及股骨生物力学指标明显下降;用蛇床子总黄酮后,股骨骨密度及股骨生物力学指标均增高。结论蛇床子总黄酮对去卵巢（OVX）造成的骨质疏松有一定的防治作用,能防止骨生物力学性能的受损,效果略逊色于已烯雌酚。     

自拟强骨饮对绝经后骨质疏松患者血清雌激素水平及骨密度影响的临床观察

[目的]观察自拟中药强骨饮对绝经后骨质疏松患者血清雌激素水平及骨密度的影响。[方法]选择浙江中医药大学附属第二医院骨质疏松中心2009年8月至2010年8月绝经后骨质疏松症患者62例,随机分为治疗组与对照组各31例,分别应用自拟中药强骨饮1副/d,2次/d;口服钙尔奇D片1片/d。均治疗3个月,治疗前后分别测血清雌激素水平及第二腰椎骨密度值指标并进行对照分析。[结果]与钙尔奇D组相比,自拟中药强骨饮组血清雌二醇（E2）水平显著升高（P〈0.05）;第二腰椎密度值明显增加（P〈0.05）。[结论]自拟中药强骨饮能提升血清雌激素水平、增加腰椎骨密度。     

Potential health risks to adults and children in the UK from exposure to dietary lead in gamebirds shot with lead ammunition

We estimate potential risks to human health in the UK from dietary exposure to lead from wild gamebirds killed by shooting. The main source of exposure to lead in Europe is now dietary. We used data on lead concentrations in UK gamebirds, from which gunshot had been removed following cooking to simulate human exposure to lead. We used UK food consumption and lead concentration data to evaluate the number of gamebird meals consumed weekly that would be expected, based upon published studies, to result in changes, over and above those resulting from exposure to lead in the base diet, in intelligence quotient (IQ), Systolic Blood Pressure and chronic kidney disease (CKD) considered in a recent opinion of the European Food Safety Authority (EFSA) to be significant at a population level and also in SAT test scores and in rates of spontaneous abortion. We found the consumption of <1 meal of game a week may be associated with a one point reduction in IQ in children and 1.2–6.5 gamebird meals per week may be associated with the other effects. These results should help to inform the development of appropriate responses to the risks from ingesting lead from ammunition in game in the UK and European Union (EU).     

Pelvic Periprosthetic Bone Mineral Density Measurement Around Cemented vs Cementless Acetabular Prostheses

We compared the short-term precision of pelvic periprosthetic bone mineral density (BMD) measurement around a cementless acetabular prosthesis (n = 29) vs a cemented all-polyethylene acetabular prosthesis (n = 19) in patients after total hip arthroplasty. Two dual-energy x-ray absorptiometry scans of the pelvis were made on the same day in each subject with subject repositioning between scans and analyzed independently with a 4-region of interest model. Precision was expressed as coefficient of variation (CV%). The measured BMD around the cemented prostheses was greater than the cementless prostheses p < 0.004, all analyses). The net CV for pelvic BMD measurements around the cementless prosthesis was 1.9% vs 3.6% around the cemented prosthesis (F-test p < 0.001). The CVs of individual regions of interest was between 2.8% and 4.8% for the cementless prosthesis vs 4.4% to 8.4% for the cemented prosthesis (F-test; p < 0.05, all comparisons). Prospective studies would require 57 subjects to detect a 10% change in net pelvic BMD around a cementless prosthesis and 122 to detect a similar change around a cemented prosthesis with 90% power and with an alpha error of 0.05. In conclusion, the precision of pelvic BMD measurements made around cementless prostheses are better vs those for cemented prostheses. Dual-energy x-ray absorptiometry studies of cemented prosthesis require approximately double the number of subjects vs cementless prostheses to achieve a similar level of power.     

钙剂联合骨化三醇治疗绝经后妇女骨质疏松的临床分析

目的:探讨钙剂联合骨化三醇治疗绝经后妇女骨质疏松的临床疗效。方法:回顾性分析2009年5月至2011年4月广东省揭阳市妇幼保健院收治的68例绝经后妇女骨质疏松患者的临床资料。对照组(34例)服用钙尔奇D,观察组(34例)服用钙尔奇D+骨化三醇,共6~12个月。监测治疗前后骨密度(BMD)、骨钙素(BGP)、血清IL-6、TNF-a变化情况。结果:对照组腰椎侧位(L2-4)BMD、血清BGP、IL-6、TNF-a治疗前后差异无统计学意义(P>0.05);治疗后,观察组腰椎侧位(L2-4)BMD、血清BGP较治疗前明显增加(P<0.01)。观察组治疗后血清IL-6、TNF-a浓度均较治疗前降低(P<0.05)。结论:钙剂联合骨化三醇治疗绝经后妇女骨质疏松疗效肯定,可提高骨BMD、BGD,降低血清IL-6、TNF-a浓度。