小骨

Results: MR examination of bone contusion were mostly less than two weeks, but a few patients were longer than one year: STIR, TIWI were more sensitive lesion detection series in hone contusion (100% and 95.7%). Bone contusion mostly occur at knee, and lesions mainly distributed in the margin area of articular (69.8%), in superior portion of vertebral body(74.l%). Bone contusion following-up showed a line-like hyperostosis and osteosclerosis in contusion area. Histological manifestations of bone contusion were local trabecular micro fractures, edema, hemorrhage and injury of fat tissue.

结果：1多数骨挫伤MRI检查在两周内完成，少数病人时间超过1年；2检出骨挫伤敏感的MRI序列为STIR及T1W/I（100%及95.7%）；3膝关节是骨挫伤的好发部位，病灶主要分布于骨边缘区(69.8%)，在脊柱主要分布于椎体上缘终板下(74.1%)；4骨挫伤影像随访提小病变区出现线状骨质修复，骨髓水肿吸收；5骨挫伤病理为骨小梁显微骨折，骨髓水肿、出血和脂肪损伤。

objective to evaluate early signs of avascular necrosis of femoral head in adult by ct and to guide clinical treatment.methods the cases with suspicious diagnose of anfh were scaned in the both hip joints by x ray and ct to find the early signs of anfh with ct.results early signs of anfh using ct showed that, in 38 femoral heads 31 cases, there were radiate star shape of high density osteosclerosis of the trabeculae in 13 femoral head.twenty five femoral heads showed osteosclerosis and trabeculae structure disappearing and vague,incoordinately low ostedensity area and cyst change.there were fracture under the cartilage and light subsid in 5 cases.the cases in stage ⅰwere given decompression, while the pationtsresul in stageⅱand stageⅲ were given decompression and ostetransplant.conclusion ct results show that the sign of the high osteodensity and low osteodensity and cyst change can disply early anfh.

摘 要］目的：探讨成人股骨头缺血性坏死的早期ct征象并指导临床治疗。方法：对临床疑诊anfh的全部病例均行x线平片及ct检查，分析anfh的早期ct征象。结果：早期anfh的ct表现：31例38个股骨头，其中13个股骨头骨小梁呈放射状高密度的"星状征"，骨小梁境界清楚、锐利，属ⅰ期；25个股骨头表现为骨硬化，骨小梁结构消失、模糊不清，骨密度减低及囊性改变，属ⅱ期；并有5个股骨头在ⅱ期影像学改变基础上出现软骨下骨折及轻微塌陷，属ⅲ期。治疗结果：ⅰ期行钻孔髓内减压术，ⅱ、ⅲ期行钻孔减压植骨术。

Months later, BMD in Sham and OVX-2 were (1.22±0.07)g/cm2 and (0.86±0.09)g/cm2. BMD in OVX-2 decreased by 29.5% compared with that in Sham group. Histomorphologically, trabecular bone decreased significantly in OVX-2 group compared with that in control groups.

组织学切片观察发现，去势12个月后，绵羊椎体松质骨骨小梁明显稀疏，局部存在骨小梁骨折及骨缺损，而对照组骨小梁结构完整，呈圆形或椭圆形拱形结构。

ResultsThe organization structure of experimental group was disorganized, cracked,and the bone trabecula was rarefactive and non-intact . There were a great number of empty lacune in bone trabecula.

结果实验组组织结构紊乱，破碎，骨小梁稀疏、不完整，有大量的空骨陷窝，而对照组骨小梁相对较完整、排列整齐，骨小梁中的骨细胞清晰可见，偶见空骨陷窝。

Exercise with above proper intensity has bad effect on the development of bone tissue morphous.

3适宜强度的负重游泳运动对生长发育期大鼠骨组织形态中骨小梁面积百分数骨小梁厚度、骨小梁数量和骨小梁分离度；结构力学中的载荷和桡度均有良好的效果。

The organization structure of experimental group was disorganized, cracked and the bone trabecula was rarefactive and non-intact and there was a great number of empty lacuna in bone trabecula. While there was the reverse situation in the control group .

结果实验组组织结构紊乱，破碎，骨小梁稀疏、不完整，有量的空骨陷窝，而对照组骨小梁相对较完整、排列整齐，骨小梁中的骨细胞清晰可见，核大，位于中央。

ResultThe organization structure of experimental group was disorganized, cracked and the bone trabecula was rarefactive and non-intact and there was a great number of empty lacuna in bone trabecula. While there was the reverse situation in the control group .

结果实验组组织结构紊乱，破碎，骨小梁稀疏、不完整，有大量的空骨陷窝，而对照组骨小梁相对较完整、排列整齐，骨小梁中的骨细胞清晰可见，核大，位于中央。

Resultthe organization structure of experimental group was disorganized, cracked and the bone trabecula was rarefactive and non-intact and there was a great number of empty lacuna in bone trabecula.

结果实验组组织结构紊乱，破碎，骨小梁稀疏、不完整，有大量的空骨陷窝，而对照组骨小梁相对较完整、排列整齐，骨小梁中的骨细胞清晰可见，核大，位于中央。

SEM examination showed that the experimental group has regular spongiest structure,complete bone lacuna structure,partial broken os-teone and visible bone canaliculus, while the sham control group has disorderly structure, broken osrteone, little bone lacuna and total invisibility of bone canaliculus.

结果 X线片示A组右侧股骨头骨密度增高，透光区较小，B组骨密度减低，有大小不等透光区；ECT扫描示A组静态放射性分布中等浓聚，而B组静态图像放射性分布呈炸面包圈样改变，欠均匀；组织学检查显示A组骨空陷窝率、血管数、骨髓腔内脂肪细胞直径较B组明显改善(P＜0.01)；扫描电镜检查显示A组松质骨结构较规则，骨陷窝结构完整，部分骨板断裂，骨小管可见。B组结构紊乱不清，骨板断裂，骨陷窝少，骨小管消失。

objective to evaluate early signs of avascular necrosis of femoral head in adult by ct and to guide clinical treatment.methods the cases with suspicious diagnose of anfh were scaned in the both hip joints by x ray and ct to find the early signs of anfh with ct.results early signs of anfh using ct showed that, in 38 femoral heads 31 cases, there were radiate star shape of high density osteosclerosis of the trabeculae in 13 femoral head.twenty five femoral heads showed osteosclerosis and trabeculae structure disappearing and vague,incoordinately low ostedensity area and cyst change.there were fracture under the cartilage and light subsid in 5 cases.the cases in stage ⅰwere given decompression, while the pationtsresul in stageⅱand stageⅲ were given decompression and ostetransplant.conclusion ct results show that the sign of the high osteodensity and low osteodensity and cyst change can disply early anfh.

摘 要］目的：探讨成人股骨头缺血性坏死的早期ct征象并指导临床治疗。方法：对临床疑诊anfh的全部病例均行x线平片及ct检查，分析anfh的早期ct征象。结果：早期anfh的ct表现：31例38个股骨头，其中13个股骨头骨小梁呈放射状高密度的&星状征&，骨小梁境界清楚、锐利，属ⅰ期；25个股骨头表现为骨硬化，骨小梁结构消失、模糊不清，骨密度减低及囊性改变，属ⅱ期；并有5个股骨头在ⅱ期影像学改变基础上出现软骨下骨折及轻微塌陷，属ⅲ期。治疗结果：ⅰ期行钻孔髓内减压术，ⅱ、ⅲ期行钻孔减压植骨术。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。