目的:探讨70岁以上老年骨质疏松症(osteoporsis,OP)用双能X线骨密度仪(dual energy x-ray absorptiometry,DEXA)诊断检查时,测定部位的不同是否造成漏诊。方法:应用DEXA测定了50例70岁以上临床上有明显的骨质疏松症状者(有症状组)以及50...目的:探讨70岁以上老年骨质疏松症(osteoporsis,OP)用双能X线骨密度仪(dual energy x-ray absorptiometry,DEXA)诊断检查时,测定部位的不同是否造成漏诊。方法:应用DEXA测定了50例70岁以上临床上有明显的骨质疏松症状者(有症状组)以及50例70岁以上无临床症状的健康体检者(无症状组),对同一检查对象同时测定腰椎(L2-4)正位及左股骨(total)、股骨颈(neck)的骨密度(bone mineral density,BMD),并比较两组不同部位OP的检出率。结果:50例有症状组腰椎(L2-4)测出OP31例(62%),股骨(total)和股骨颈(neck)共测出OP45例(90%)(t=10.638,P<0.01);,50例无症状组腰椎(L2-4)测出OP20例(40%),股骨(total)和股骨颈(neck)共测出OP38例(76%)(t=13.16,P<0.01);结论:70岁以上老年人临床上无论是否合并明显的OP症状,用DEXA诊断检查时,测定部位的不同可能对OP的诊断有影响,髋部OP检出率高于腰椎,最好是同时测定腰椎和髋部的BMD,以防造成漏诊。展开更多
Osteoporosis, a public health problem is able to occur severe fractures and its prevalence increases in developing countries. Several factors involved in its pathogenesis. These factors are: Heredity, elderly, race, e...Osteoporosis, a public health problem is able to occur severe fractures and its prevalence increases in developing countries. Several factors involved in its pathogenesis. These factors are: Heredity, elderly, race, ethnicity, hormones, physical inactivity, sunlight exposure, vitamin D deficiency and certain drugs. In Africa, few data are available and the disease prevalence is maybe underestimated. In Senegal, measure of bone mineral density is recent. In this study, our objective was to determine DEXA patients profile and epidemiological, clinical characteristics of patients for densitometry examination. Thus, 43 cases were collected;lumbar and femoral sites were evaluated. Median lumbar T-score was 0.91 and the femoral T-score was 0.16. Osteopenia was found in 35% of patients and osteoporosis in 26%. Bone Mineral Density was abnormal in 60% of cases. This study is another proof of documented reality of osteoporosis in Senegal. It determines frequency in a population at risk. For the future, it opens way for further larger studies to get better profile of the patients and prevalence osteoporosis in Senegal.展开更多
Vitamin D deficiency is widespread in children and is associated with increased fracture severity. Previous studies have shown mixed results on the impact of vitamin D supplementation on bone health parameters measure...Vitamin D deficiency is widespread in children and is associated with increased fracture severity. Previous studies have shown mixed results on the impact of vitamin D supplementation on bone health parameters measured on dual-energy x-ray absorptiometry (DEXA) scan. This is the first longitudinal DEXA study in a pediatric fracture population. Pediatric fracture patients with vitamin D levels below 20 ng/mL were counseled to take vitamin D and calcium per a serum-based protocol. Patients underwent baseline DEXA within the initial 12 weeks post fracture and had follow-up scans at 6 and 12 months. 48 patients were enrolled, 32 patients completed two DEXA scans, and 19 completed three DEXA scans. There was a significant increase in lumbar spine BMC, TBLH BMD, and TBLH BMC between DEXA 1 and 2 (p 0.001). A positive trend in DEXA parameters is suggested between DEXA 1 and DEXA 3. Height adjusted z-scores (HAZ) were calculated which showed no statistical significance, p-values > 0.05. In this group, there are no significant changes in TBLH, BMC or BMD z-scores one year after fracturing despite vitamin D and calcium supplementation. This suggests that children returning to collision sports may be at continued risk for refracture and future studies are needed.展开更多
文摘目的:探讨70岁以上老年骨质疏松症(osteoporsis,OP)用双能X线骨密度仪(dual energy x-ray absorptiometry,DEXA)诊断检查时,测定部位的不同是否造成漏诊。方法:应用DEXA测定了50例70岁以上临床上有明显的骨质疏松症状者(有症状组)以及50例70岁以上无临床症状的健康体检者(无症状组),对同一检查对象同时测定腰椎(L2-4)正位及左股骨(total)、股骨颈(neck)的骨密度(bone mineral density,BMD),并比较两组不同部位OP的检出率。结果:50例有症状组腰椎(L2-4)测出OP31例(62%),股骨(total)和股骨颈(neck)共测出OP45例(90%)(t=10.638,P<0.01);,50例无症状组腰椎(L2-4)测出OP20例(40%),股骨(total)和股骨颈(neck)共测出OP38例(76%)(t=13.16,P<0.01);结论:70岁以上老年人临床上无论是否合并明显的OP症状,用DEXA诊断检查时,测定部位的不同可能对OP的诊断有影响,髋部OP检出率高于腰椎,最好是同时测定腰椎和髋部的BMD,以防造成漏诊。
文摘Osteoporosis, a public health problem is able to occur severe fractures and its prevalence increases in developing countries. Several factors involved in its pathogenesis. These factors are: Heredity, elderly, race, ethnicity, hormones, physical inactivity, sunlight exposure, vitamin D deficiency and certain drugs. In Africa, few data are available and the disease prevalence is maybe underestimated. In Senegal, measure of bone mineral density is recent. In this study, our objective was to determine DEXA patients profile and epidemiological, clinical characteristics of patients for densitometry examination. Thus, 43 cases were collected;lumbar and femoral sites were evaluated. Median lumbar T-score was 0.91 and the femoral T-score was 0.16. Osteopenia was found in 35% of patients and osteoporosis in 26%. Bone Mineral Density was abnormal in 60% of cases. This study is another proof of documented reality of osteoporosis in Senegal. It determines frequency in a population at risk. For the future, it opens way for further larger studies to get better profile of the patients and prevalence osteoporosis in Senegal.
文摘Vitamin D deficiency is widespread in children and is associated with increased fracture severity. Previous studies have shown mixed results on the impact of vitamin D supplementation on bone health parameters measured on dual-energy x-ray absorptiometry (DEXA) scan. This is the first longitudinal DEXA study in a pediatric fracture population. Pediatric fracture patients with vitamin D levels below 20 ng/mL were counseled to take vitamin D and calcium per a serum-based protocol. Patients underwent baseline DEXA within the initial 12 weeks post fracture and had follow-up scans at 6 and 12 months. 48 patients were enrolled, 32 patients completed two DEXA scans, and 19 completed three DEXA scans. There was a significant increase in lumbar spine BMC, TBLH BMD, and TBLH BMC between DEXA 1 and 2 (p 0.001). A positive trend in DEXA parameters is suggested between DEXA 1 and DEXA 3. Height adjusted z-scores (HAZ) were calculated which showed no statistical significance, p-values > 0.05. In this group, there are no significant changes in TBLH, BMC or BMD z-scores one year after fracturing despite vitamin D and calcium supplementation. This suggests that children returning to collision sports may be at continued risk for refracture and future studies are needed.
