全文获取类型
收费全文 | 657篇 |
免费 | 18篇 |
国内免费 | 42篇 |
专业分类
基础医学 | 32篇 |
临床医学 | 90篇 |
内科学 | 12篇 |
神经病学 | 12篇 |
特种医学 | 80篇 |
外科学 | 259篇 |
综合类 | 171篇 |
预防医学 | 18篇 |
眼科学 | 4篇 |
药学 | 25篇 |
中国医学 | 5篇 |
肿瘤学 | 9篇 |
出版年
2024年 | 4篇 |
2023年 | 5篇 |
2022年 | 4篇 |
2021年 | 4篇 |
2020年 | 5篇 |
2019年 | 2篇 |
2018年 | 7篇 |
2017年 | 7篇 |
2016年 | 11篇 |
2015年 | 18篇 |
2014年 | 14篇 |
2013年 | 36篇 |
2012年 | 32篇 |
2011年 | 40篇 |
2010年 | 42篇 |
2009年 | 58篇 |
2008年 | 50篇 |
2007年 | 34篇 |
2006年 | 47篇 |
2005年 | 85篇 |
2004年 | 56篇 |
2003年 | 41篇 |
2002年 | 22篇 |
2001年 | 20篇 |
2000年 | 12篇 |
1999年 | 13篇 |
1998年 | 14篇 |
1997年 | 10篇 |
1996年 | 3篇 |
1995年 | 3篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1992年 | 8篇 |
1991年 | 4篇 |
1990年 | 1篇 |
1987年 | 1篇 |
1982年 | 1篇 |
排序方式: 共有717条查询结果,搜索用时 15 毫秒
651.
652.
临床资料及方法男性13例,女性2例,年龄12~52岁。受伤原因:打击伤10例,坠落伤2例,车祸伤3例。骨折部位:上矢状窦前1/3上方6例,中后2/3上方9例。临床表现:意识GCS13~15分8例,8~12分5例,6~8分2例,失血性休克2例,肢体偏瘫2例。术前均行头 相似文献
653.
654.
由刘少喻等医师撰写的《后路单节段椎弓根钉复位固定治疗创伤性胸腰椎骨折》一文,在生物力学研究的基础上,采用经后路单节段椎弓根钉复位固定治疗70例胸腰椎骨折,并对46例患者进行1年以上临床随访。结果表明无一例内固定物松动,全部获得骨性愈合,术后骨折椎椎体的压缩程度和后凸角度获得明显改善,术后1年随访时均无明显丢失。因此作者认为该固定技术具有优良的复位和固定作用, 相似文献
655.
Objective: To evaluate the surgical procedure of endo- scopic transforminal discectomy, bone grafting and Dynalok pedicle screw fixation under X-Tube operation system in the treatment of lumbar disc herniation combined with segmental instability and/or pars defected spondylolithesis.
Methods: From June 2004 to May 2006, 42 patients with classic features of lumbar disc herniation combined with segmental instability and/or pars defected spondylolithesis underwent endoscopic transforminal lumbar interbody fu- sion (TLIF). Under the guidance of fluoroscopy, a 2.8 to 3.0 cm incision with 4.5 to 5.0 cm apart from the posterior middle line was made on the symptomatic side and the working portal (X-Tube) was docked unilaterally on the facet joint. A total facetectomy was then performed to expose neural fo- ramina and nerve root. Discectomy and endplate prepara- tion were completed through the tube. A Telamon cage was placed obliquely into the intervertebral space after interbody grafting, and then the Dynalok pedicle screw fixation system was performed. This procedure was accomplished on the lateral side when it is necessary.
Results: Clinical outcomes were determined using the Oswestry Disability Index (ODI) which revealed that 62.2% of patients got excellent results, 29.2% good and 8.6% fair. The average hospital stay was 12.5 days (5-25 days). Op- eration time averaged 240 min (110-320 min), blood loss averaged 140 ml (80-420 ml) and incision length averaged 3 cm (2.8-3.2 cm). Five patients had complications including wound infection in 1 case, incision dehiscence and focal skin necrosis in 1, progressive radicular pain of contralat- eral leg in 1 and residual radicular numbness after transient radicular pain in 2.
Conclusions: This surgical procedure of endoscopic transforminal diskectomy, bone grafting, cage placement and pedicle screw fixation can be effectively accomplished under X-Tube operation system with predominant benefits such as small incision, less stripping of pa 相似文献
Methods: From June 2004 to May 2006, 42 patients with classic features of lumbar disc herniation combined with segmental instability and/or pars defected spondylolithesis underwent endoscopic transforminal lumbar interbody fu- sion (TLIF). Under the guidance of fluoroscopy, a 2.8 to 3.0 cm incision with 4.5 to 5.0 cm apart from the posterior middle line was made on the symptomatic side and the working portal (X-Tube) was docked unilaterally on the facet joint. A total facetectomy was then performed to expose neural fo- ramina and nerve root. Discectomy and endplate prepara- tion were completed through the tube. A Telamon cage was placed obliquely into the intervertebral space after interbody grafting, and then the Dynalok pedicle screw fixation system was performed. This procedure was accomplished on the lateral side when it is necessary.
Results: Clinical outcomes were determined using the Oswestry Disability Index (ODI) which revealed that 62.2% of patients got excellent results, 29.2% good and 8.6% fair. The average hospital stay was 12.5 days (5-25 days). Op- eration time averaged 240 min (110-320 min), blood loss averaged 140 ml (80-420 ml) and incision length averaged 3 cm (2.8-3.2 cm). Five patients had complications including wound infection in 1 case, incision dehiscence and focal skin necrosis in 1, progressive radicular pain of contralat- eral leg in 1 and residual radicular numbness after transient radicular pain in 2.
Conclusions: This surgical procedure of endoscopic transforminal diskectomy, bone grafting, cage placement and pedicle screw fixation can be effectively accomplished under X-Tube operation system with predominant benefits such as small incision, less stripping of pa 相似文献
656.
目的 探讨腰椎间盘内窥镜(MED)术后致腰椎间盘炎的原因、临床表现特点及微创外科治疗.方法 自2000年4月~2005年12月,1 256例微创腰椎间盘摘除术致腰椎间盘炎6例,发病率0.63%.男性5例,女性1例;其中L4、5椎间盘炎5例,L5S1椎间盘炎1例.6例均表现为术后疼痛持续加重,或临床症状缓解后再次出现腰骶部痉挛性剧痛和活动障碍,均伴有血沉(ESR)和C-反应蛋白(CRP)显著增高及MRI早期显著改变而确诊.本组2例采用非手术治疗,4例采用腹膜外小切口(3~4cm)椎间隙清创,自体髂骨植骨融合.结果 经门诊随访,平均随访时间19.7个月,结果显示: 手术组的平均卧床时间和恢复工作时间均明显少于非手术组,其腰痛缓解程度和椎间隙高度优于非手术组.结论 积极手术是治疗腰椎间盘炎的最好方法. 相似文献
657.
658.
659.
对跟腱附着的跟骨结节部撕脱骨折,可根据撕脱骨块大小,.采用加压松质骨螺丝钉固定或钢丝固定。由于跟骨内多为 相似文献
660.
GDNF基因修饰的雪旺细胞对大鼠坐骨神经缺损的修复作用 总被引:4,自引:2,他引:2
目的应用携带胶质细胞源性神经营养因子基因的逆转录病毒载体质粒(pLXSN-GDNF)对体外培养的雪旺细胞进行基因修饰,并结合细胞外基质凝胶及生物可降解聚乳酸-聚羟基乙酸共聚物(PLGA)管构建神经移植复合体,用于大鼠坐骨神经缺损的修复,同时对其促轴突再生及神经元保护作用予以检测评价.方法 40只成年Wistar大鼠随机分为4组:A组(n=10) 细胞外基质凝胶-PLGA管桥接组;B组(n=10)雪旺细胞-细胞外基质凝胶-PLGA管桥接组;C组(n=10) GDNF基因修饰的雪旺细胞-细胞外基质凝胶-PLGA管桥接组;D组(n=10)自体神经桥接组.损伤各组12周时应用神经电生理及甲苯胺蓝染色和透射电镜观测神经再生情况,辣根过氧化物酶神经逆行示踪技术用于脊髓前角运动神经元再生评价.结果 12周时再生神经运动传导速度检测、甲苯胺蓝染色轴突形态计量学分析、透射电镜超微结构观察以及脊髓前角运动神经元再生评价结果提示:C组优于A、B组,而与D组相比无明显差异.结论雪旺细胞的转基因处理可能弥补单纯细胞移植神经营养因子含量的不足,而可能达到与自体神经移植相似的效果. 相似文献