全文获取类型
收费全文 | 17289篇 |
免费 | 750篇 |
国内免费 | 495篇 |
专业分类
耳鼻咽喉 | 42篇 |
儿科学 | 134篇 |
妇产科学 | 24篇 |
基础医学 | 850篇 |
口腔科学 | 512篇 |
临床医学 | 1297篇 |
内科学 | 544篇 |
皮肤病学 | 13篇 |
神经病学 | 223篇 |
特种医学 | 1031篇 |
外科学 | 9128篇 |
综合类 | 2571篇 |
预防医学 | 482篇 |
眼科学 | 68篇 |
药学 | 1028篇 |
14篇 | |
中国医学 | 414篇 |
肿瘤学 | 159篇 |
出版年
2024年 | 40篇 |
2023年 | 212篇 |
2022年 | 551篇 |
2021年 | 701篇 |
2020年 | 582篇 |
2019年 | 518篇 |
2018年 | 516篇 |
2017年 | 584篇 |
2016年 | 676篇 |
2015年 | 631篇 |
2014年 | 1589篇 |
2013年 | 1388篇 |
2012年 | 1297篇 |
2011年 | 1337篇 |
2010年 | 1045篇 |
2009年 | 1093篇 |
2008年 | 874篇 |
2007年 | 842篇 |
2006年 | 786篇 |
2005年 | 683篇 |
2004年 | 512篇 |
2003年 | 383篇 |
2002年 | 303篇 |
2001年 | 233篇 |
2000年 | 193篇 |
1999年 | 155篇 |
1998年 | 105篇 |
1997年 | 74篇 |
1996年 | 58篇 |
1995年 | 46篇 |
1994年 | 49篇 |
1993年 | 47篇 |
1992年 | 46篇 |
1991年 | 40篇 |
1990年 | 25篇 |
1989年 | 27篇 |
1988年 | 31篇 |
1987年 | 30篇 |
1986年 | 12篇 |
1985年 | 25篇 |
1984年 | 18篇 |
1983年 | 15篇 |
1982年 | 38篇 |
1981年 | 27篇 |
1980年 | 18篇 |
1979年 | 18篇 |
1978年 | 16篇 |
1977年 | 12篇 |
1976年 | 14篇 |
1975年 | 12篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
Thomas Ruffing Tilmann Rückauer Frederic Bludau Alexander Hofmann Markus Muhm Arnold J Suda 《Injury》2019,50(2):607-612
Introduction
Compression fractures of the cuboid bone in children and adolescents are rare. Fracture morphology, associated lesions, treatment options and long-term outcomes of this very rare injury are published in a few case reports. This study with review of the literature aims to support the understanding of fracture pattern and optimize pathways of decision making.Material and Methods
A retrospective two-center study was performed in a patient cohort treated between 2001 and 2016. All patients aged less than 18 years who sustained a cuboid fracture were included. Age, gender, mechanism of injury, fracture morphology, amount of displacement, associated injuries, and therapy were analyzed. In the follow-up (FU), the AOFAS Midfoot Scale was investigated.Results
Fractures of the cuboid bone were diagnosed in 7 boys and 9 girls. The mean age of the patients was 10 years (range: 2.2–16.1 years). According to the classification of Fenton we detected 11 (69%) type 2, 2 (12%) type 3 and 3 (19%) type 5b fractures. Other fracture types according to Fenton were not observed. All children under 10 years sustained a type 2 fracture. Open reduction and internal fixation was performed in 5 (31%) patients. Bone grafting was not necessary. FU was performed in 14/16 patients on average after 9 years (mean; range: 1.4–16.2 years). The mean AOFAS Midfoot Scale at FU for extra-articular type 2 fractures was 100 points, whereas in intra-articular fractures (Type 3) and fractures associated with mid-tarsal disruption (type 5b) worse results were found (95 and 66 points, accordingly).Conclusion
This rare injury shows inhomogenous morphologies and offers different treatment approaches. Extra-articular Fenton type 2 lesions are the most common type of cuboid fracture in children (69%). A potential loss of length of the lateral column must be considered. In contrast to adults, type 1, 4, and 5a fractures were not found in our cohort of children and adolescents. Lower scores of the AOFAS Midfoot Scale were found with either intra-articular involvement or associated midfoot lesions. 相似文献3.
4.
目的::研究股骨近端空心锁定板内固定治疗股骨颈骨折的临床效果。方法:对2008年2月至2010年4月我院入院治疗的108例股骨颈骨折患者进行了研究,随机分为两组,对照组给与空心钉进行治疗,观察组采用股骨近端空心锁定板内固定治疗,比较两组治疗方案的手术时间、出血量、住院时间以及下床时间,比较两组治疗方案的手术并发症发生率,并比较两组患者三年期临床疗效。结果:观察组患者手术出血量明显少于对照组,手术时间、住院时间以及下床时间明显短于对照组,两组比较差异明显,有统计学意义( P<0.05);两组患者手术并发症均以疼痛、骨不连以及感染为主,其中观察组上述并发症的发生率为13.0%,明显低于对照组33.3%,两组比较差异有统计学意义( P<0.05);观察组患者三年临床总有效率为79.6%,对照组患者三年期临床总有效率为51.9%,两组比较差异明显,有统计学意义( P<0.05)。结论:股骨近端空心锁定板内固定治疗股骨颈骨折临床效果显著,可以明显缩短手术时间以及住院时间,降低手术并发症,并且三年临床总有效率更高,值得临床推广应用。 相似文献
5.
目的:探讨老年人桡骨远端C型骨折的手术治疗与非手术治疗的疗效差异,评价两种方法的优缺点。方法回顾性分析2009-12—2011-12收治的老年桡骨远端C型骨折68例,按照治疗方法分为A组(手术组)及B组(非手术组),统计分析两组患者的临床资料。结果 A组33例, B组35例,平均随访21.5个月。两组患者的年龄、骨折类型均无差异(P>0.05);术后影像学指标A组优于B组,骨折愈合时间B组优于A组,治疗成本A组大于B组(P<0.05);Cooney评分早期A组优于B组,1年后两组无差异,两组的并发症无差异(P>0.05)。结论老年人桡骨远端C型骨折手术治疗较非手术治疗可获得更好的复位及早期功能,但远期功能恢复无差异。 相似文献
6.
Injury to the distal biceps occurs in certain high risk groups. Anatomical continuity of the lacertus fibrosus has bearing on the extent of retraction of the torn tendon stump. The objective of clinical and imaging evaluation is to discriminate between tendinosis, partial tear, acute complete tear and chronic complete tear. A complete tear of the distal biceps tendon can be diagnosed clinically with the Hook test. The traditional Hook test and the resisted Hook test are useful clinical tests. Though x-rays are routinely done, MRI remains the investigation of choice. Non-operative treatment has a role in selected patients with partial tear or patients with complete tear who have low functional demands. Operative treatment is the recommended treatment for complete tear of the distal biceps and is associated with good functional outcome and patient satisfaction. 相似文献
7.
《Journal of Clinical Orthopaedics and Trauma》2019,10(5):884-889
IntroductionAcetabulum fractures, though relatively uncommon, are associated with significant morbidity and mortality. These involve high energy trauma and due to their complex nature, the management requires understanding the relevant surgical anatomy, defining the injury via appropriate radiographic assessment and determining a suitable treatment plan. Literature is scarce for the demographic data, fracture patterns, associated injuries, management and early complications in the Indian scenario. These factors play a pivotal role in the ultimate recovery of the patients. Therefore this study was conceptualised to assess the epidemiology and evaluate the complications of these fractures. Furthermore the effects of various factors determining the quality of reduction in surgically treated patients were also assessed.MethodologyThis was a prospective observational study in which patients presenting to the advance trauma centre of our institute with acetabulum fractures were included. Demographical data of the patients, mechanisms of injuries, fractures morphologies, complications and radiological outcomes were recorded prospectively.Results116 patients with acetabular fractures were included in the study. 81% of these were males, with average age of 39.95 ± 15.87 years; with road traffic accidents being the predominant mode of injuries. Mortality was reported in 5 patients; 4 patients had deep venous thrombosis and sciatic nerve injuries were seen in 12 patients of which 4 were iatrogenic. 8 patients had some form of infection, out of which 4 required multiple debridements. 4 cases developed heterotrophic ossification while 2 cases had loss of reduction. The timing of surgery and other associated fractures had significant effect on the quality of reduction (p < 0.05); while age, gender, mode of injury or individual fracture patterns had no such effect.ConclusionsProper radiological assessment and evaluation of fracture configuration is important for management of acetabulum fractures. When indicated, this should be followed by early open reduction and internal fixation to achieve anatomical reduction, with management of associated injuries for better outcomes. 相似文献
8.
IntroductionDespite advancements in surgical techniques complications like implant failure is very common after the fixation of intertrochanteric fractures. Classifying these complex fractures based on plain radiographs underestimates the complexity of these fractures which in turn leads to complications. We propose a comprehensive classification of the intertrochanteric fractures based on 3D Non Contrast Computed Tomography (3D NCCT) scan.Material and methodsA total of 102 patients (51 males and 51 females) with intertrochanteric fractures were included in this study conducted over a time period of 22 months in a Tertiary care center in North India. NCCT proximal femur of the intertrochanteric fracture patients was done to formulate a new CT classification system and classify all fractures. Intra and inter-observer reliability was tested using kappa variance.ResultsNew classification system was proposed which included 3 main and a total of 6 groups. All the fractures were classifiable into the new system. Kappa variance of the study showed a good intra and interobserver reliability (0.95 and 0.90) proving clinical agreement of the classification.ConclusionThis new 3D-CT based classification has the advantages of being easy, comprehensible with high intra and inter-observer reliability. This 3DCT based classification can prove to be useful to detect occult intertrochanteric fractures undetectable in plain radiographs as well as choosing the optimum treatment plan. 相似文献
9.
10.