腰骶部SPR术中脊神经前后根定位的应用解剖   总被引：13，自引：6，他引：13  

徐朋  徐达传 《中国临床解剖学杂志》1999,17(1):1-3

目的：为ＳＰＲ提供可靠的术中脊神经前、后根鉴别的解剖学依据。方法：在２０例成人脊柱标本上,去除后部结构,暴露整个马尾神经,对Ｌ１～Ｓ２节段的前后根进行形态学观察和测量。结果：脊神经后根位于马尾的后半部,前根则位于前半部。脊神经后根较相应的前根粗大,后根从Ｌ１～Ｓ１逐渐增大,以Ｓ１为最粗大;前根则以Ｌ３最粗大。相应前后根出硬脊膜前,有一段相互贴附并紧贴硬脊膜侧壁。结论：在多椎板切除ＳＰＲ术中前、后根的定位及鉴别,暴露时可根据前、后根出硬脊膜前的相互贴附;在限制性椎板切除时则可通过脊髓外侧索和Ｌ１前、后根之间的最下端的齿状韧带加以鉴别  相似文献   

上颌磨牙近中颊根第二根管的定位   总被引：1，自引：0，他引：1  

卢兆杰  梁立  姜醒 《福建医药杂志》2003,25(5):26-28

目的　通过对 77颗离体牙根管数目的检查 ,对近中颊根第二根管口 (MB2 )与近中颊根管口(MB)腭侧根管口 (P)的相对位置分布的规律进行观察分析 ,为临床治疗提供依据。方法　选择 77颗上颌离体牙 ,其中上颌第一磨牙 35颗 ,上颌第二磨牙 4 2颗 ,截冠后寻找近中颊根及其第二根管 ,并取得上颌恒磨牙根管口间距及根管口连线夹角等数据。结果　上颌第一、二恒磨牙近中颊根存在第二根管的有 36颗 ,占总数的 4 6 .75 % ,其中有1 5颗牙近中颊第二根管钙化不通 ,2 3颗牙近中颊根的第二根管口位于腭侧与近中颊第一根管口连线的近中处 ,近中颊根管口至近中颊第二根管口的距离为 1 .2 8± 0 .35 mm ,腭侧根管口至近中颊根管口的距离为 2 .98± 0 .4 7mm ,近中颊第二根管口至 P- MB线的垂直距离为 0 .6 3± 0 .1 2 mm,P- MB线与 MB- MB2 线的夹角为 2 5 .1 4°± 8.0 3°。结论　在上颌恒磨牙根管治疗时应注意根管系统的变异 ,改进开髓洞形 ,掌握查找近中颊根第二根管方法 ,以免遗漏根管  相似文献   

Decoupling location specificity from perceptual learning of orientation discrimination     

Ting Zhang  Lu-Qi Xiao  Stanley A. Klein  Cong Yu 《Vision research》2010,50(4):368-374

Perceptual learning of orientation discrimination is reported to be precisely specific to the trained retinal location. This specificity is often taken as evidence for localizing the site of orientation learning to retinotopic cortical areas V1/V2. However, the extant physiological evidence for training improved orientation turning in V1/V2 neurons is controversial and weak. Here we demonstrate substantial transfer of orientation learning across retinal locations, either from the fovea to the periphery or amongst peripheral locations. Most importantly, we found that a brief pretest at a peripheral location before foveal training enabled complete transfer of learning, so that additional practice at that peripheral location resulted in no further improvement. These results indicate that location specificity in orientation learning depends on the particular training procedures, and is not necessarily a genuine property of orientation learning. We suggest that non-retinotopic high brain areas may be responsible for orientation learning, consistent with the extant neurophysiological data.  相似文献   

隐神经卡压征的临床解剖学研究   总被引：5，自引：0，他引：5  

王震寰  秦登友 《中国矫形外科杂志》2002,9(7):699-701

目的 :探讨隐神经卡压征的解剖学基础。方法 :利用 2 0具成人尸体和 1 5条游离下肢 ,解剖、观测了隐神经在股部穿收肌腱板裂孔和在膝部穿缝匠肌—股薄肌下端间隙处的形态参数 ,并定位。结果 :在股部的收肌腱板裂孔处 ,隐神经宽 (2 .7± 0 .4)mm ,厚(1 .2± 0 .3)mm(厚 /宽 :0 .46) ;裂孔宽 (5 .2± 0 .7)mm ,高 (1 4 .1± 2 .4)mm ,孔远大于穿行其内的隐神经。在膝部的缝匠肌—股薄肌腱间隙处 ,神经宽 (2 .2± 0 .3)mm ,厚 (0 .8± 0 .2 )mm(厚 /宽 :0 .37) ;膝部隐神经更扁薄 ,且当膝关节屈伸时 ,神经在缝匠肌—肌薄肌间隙中受挤压 ,并与两肌内面的腱组织产生摩擦。另为隐神经卡压征的定位提供了一些参数。结论 :就股部收肌腱板裂孔和膝部缝匠肌—股薄肌间隙而言 ;隐神经更易在膝部的肌间隙内受挤压和摩擦而损伤。  相似文献   

Tracking of high- and low-density-lipoprotein cholesterol from childhood to young adulthood in a single large kindred with familial hypercholesterolemia     

M J Mellies  P M Laskarzewski  T Tracy  C J Glueck 《Metabolism: clinical and experimental》1985,34(8):747-753

Tracking of high- and low-density-lipoprotein cholesterol (HDLC, LDLC) from childhood to young adulthood was assessed in 77 children and in 53 adults from a single large pedigree with familial hypercholesterolemia who were respectively less than or equal to 19 and greater than or equal to 20 years old when first studied in 1973, with reassessment in 1984. No children and only five of the adults had received LDLC lowering therapy from 1973 to 1984. The rank correlations between the 1973 and 1984 measurements for LDLC were 0.73, 0.74, and 0.87; and for HDLC were 0.55, 0.73, and 0.65 (P less than 0.0001 for all correlations), respectively for relatives who were less than or equal to 12, 13 to 19, and greater than or equal to 20 years old in 1973. The 1973:1984 LDLC and HDLC correlations, categorized by relationships to the proband, were as follows: (1) unrelated, LDLC = 0.16, HDLC = 0.56;* (2) first-degree relatives, LDLC = 0.90, HDLC = 0.30; (3) second-degree relatives, LDLC = 0.79, HDLC = 0.39; and (4) other relatives, LDLC = 0.62, HDLC = 0.64. All nine of the probands' first-degree relatives who were above the age-sex specific LDLC 95th percentile in 1973 were also greater than the 95th percentile for LDLC in 1984. Similarly, seven of eight second-degree relatives with LDLC greater than the 95th percentile in 1973 were greater than the 95th percentile in 1984, as were ten of 15 other relatives. LDLC levels in childhood in this extended kindred were highly predictive of adult values.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

结直肠良性疾病的选择性肠段切除治疗     

宋安  张根福  闵志军  邱伟 《结直肠肛门外科》2009,15(2):79-81

目的探讨选择性肠段切除手术治疗结直肠良性疾病的临床疗效。方法根据结肠运输功能试验、结肠腔内测压、电子肠镜、钡剂造影、术中探查和病理检查结果综合分析作出选择性肠段的定位依据,并对57例患者进行了手术。结果选择性肠段切除手术治疗对本文所列述的结直肠良性疾病有较好的效果,达到治愈目的。结论选择性肠段切除对结直肠良性疾病,尤其是结肠慢运输型便秘、脾曲综合征、乙状结肠冗长症的手术治疗具有较好的指导意义。可较好的定位病变肠管,减少切除范围,降低并发症,同时又可避免遗漏病变。  相似文献   

核酸序列水平定位DNA损伤的实验研究     

高绪芳  饶朝龙  文卫华  衡正昌 《四川大学学报(医学版)》2007,38(2):202-204,221

目的 研究在核酸序列水平定位DNA损伤的方法.方法 培养TK6细胞,抽提基因组DNA,制备k-ras基因外显子2的单链探针.酶切基因组DNA构建损伤模型,应用依赖随机化末端连接物PCR(RDPCR)进行Southern blot,对产物进行测序.结果 酶切DNA的RDPCR产物在相应位置出现杂交条带,测序证实损伤位于HinfⅠ在k-ras外显子2的酶切位点.结论 将RDPCR和测序技术结合在一起,可在核酸水平上准确定位DNA损伤的碱基位置.  相似文献   

应用鼻翼和口角定位眶下孔和颏孔的应用解剖学研究     

王海鑫 《解剖与临床》2009,14(4):230-231,234

目的：应用鼻翼和口角标记定位眶下孔和颏孔,为颌面外科手术避免损伤出入两孔的血管神经提供应用解剖学资料。方法：取30例10％甲醛溶液固定尸体头部标本,解剖暴露眶下孔和颏孔。眶下孔和颏孔测量点为各自中心点,鼻翼测量点为鼻翼外侧下脚。测量两侧眶下孔、颏孔、鼻翼及口角之间的距离,眶下孔和颏孔最大径,鼻翼至经眶下孔垂直线的垂直距离、眶下孔至经鼻翼水平线的垂直距离、眶下孔至鼻翼直线距离,口角至经颏孔水平线的垂直距离、颏孔至经口角垂直线的垂直距离、颏孔至口角直线距离。结果：眶下孔定位在鼻翼上方（13．9±3．6）mm,向外（6．7±2．8）mm处;眶下孔与鼻翼间直线距离为（16．4±3．2）mm。颏孔定位在口角下方（20．6±2．9）mm,向内（3．4±3．1）mm处;颏孔与口角间直线距离为（21．7±3．3）mm。结论：以鼻翼和口角为标记定位眶下孔及颏孔位置,有助于临床避免损伤出入两孔的血管神经。  相似文献   

Is proliferative colonic disease presentation changing?     

Vito D Corleto  Cristiano Pagnini  Maria Sofia Cattaruzza  Ermira Zykaj  Emilio Di Giulio  Giovanna Margagnoni  Emanuela Pilozzi  Giancarlo D��Ambra  Antonietta Lamazza  Enrico Fiori  Mario Ferri  Luigi Masoni  Vincenzo Ziparo  Bruno Annibale  Gianfranco Delle Fave 《World journal of gastroenterology : WJG》2012,18(45):6614-6619

AIM: To compare the site, age and gender of cases of colorectal cancer (CRC) and polyps in a single referral center in Rome, Italy, during two periods.METHODS: CRC data were collected from surgery/pathology registers, and polyp data from colonoscopy reports. Patients who met the criteria for familial adenomatous polyposis, hereditary non-polyposis colorectal cancer syndrome or inflammatory bowel disease were excluded from the study. Overlap of patients between the two groups (cancers and polyps) was carefully avoided. The χ² statistical test and a regression analysis were performed.RESULTS: Data from a total of 768 patients (352 and 416 patients, respectively, in periods A and B) who underwent surgery for cancer were collected. During the same time periods, a total of 1693 polyps were analyzed from 978 patients with complete colonoscopies (428 polyps from 273 patients during period A and 1265 polyps from 705 patients during period B). A proximal shift in cancer occurred during the latter years for both sexes, but particularly in males. Proximal cancer increased > 3-fold in period B compared to period A in males [odds ratio (OR) 3.31, 95%CI: 2.00-5.47; P < 0.0001). A similar proximal shift was observed for polyps, particularly in males (OR 1.87, 95%CI: 1.23-2.87; P < 0.0038), but also in females (OR 1.62, 95%CI: 0.96-2.73; P < 0.07).CONCLUSION: The prevalence of proximal proliferative colonic lesions seems to have increased over the last decade, particularly in males.  相似文献   

逐点测试对嵌压性神经病的定位诊断研究   总被引：5，自引：0，他引：5  

吴保凡 《临床神经电生理学杂志》2001,10(1):7-11

目的：研究农点测试对嵌压性神经病的定位诊断价值。方法：对58例确诊的累及运动功能的嵌压性单神经病患者进行受累神经干上间隔2cm的逐步测试,并同时给予常规神经电图检查。结果：58例76条神经中51例（88％）65条神经（85％）跨嵌压段一项或几项指标异常,其中波幅明显衰减60条（79％）,传导减慢40条（53％）,潜伏期延长42条（55％）,波形显著变化55条（72％）,波宽显著变化54条（71％）。阳性率最高的表现是波幅降低。与常规神经电图总的阳性率为60％（46条）作比较,逐点测试阳性率明显提高（P＜0.01）。结论：逐点测试对嵌压性单神经病有重要的定位诊断价值,其中跨嵌压段波幅的显著衰减比传导速度的减慢有更高的阳性率。  相似文献