全文获取类型
收费全文 | 793458篇 |
免费 | 64783篇 |
国内免费 | 1852篇 |
专业分类
耳鼻咽喉 | 11067篇 |
儿科学 | 26288篇 |
妇产科学 | 21403篇 |
基础医学 | 112816篇 |
口腔科学 | 23628篇 |
临床医学 | 69103篇 |
内科学 | 164032篇 |
皮肤病学 | 20457篇 |
神经病学 | 67439篇 |
特种医学 | 30603篇 |
外国民族医学 | 262篇 |
外科学 | 123625篇 |
综合类 | 15221篇 |
一般理论 | 205篇 |
预防医学 | 54874篇 |
眼科学 | 17112篇 |
药学 | 54756篇 |
14篇 | |
中国医学 | 2200篇 |
肿瘤学 | 44988篇 |
出版年
2020年 | 7865篇 |
2019年 | 14354篇 |
2018年 | 14663篇 |
2017年 | 14009篇 |
2016年 | 15017篇 |
2015年 | 15655篇 |
2014年 | 18550篇 |
2013年 | 24204篇 |
2012年 | 23424篇 |
2011年 | 24608篇 |
2010年 | 19704篇 |
2009年 | 16465篇 |
2008年 | 22378篇 |
2007年 | 22627篇 |
2006年 | 23002篇 |
2005年 | 22395篇 |
2004年 | 21524篇 |
2003年 | 20790篇 |
2002年 | 20611篇 |
2001年 | 33663篇 |
2000年 | 34471篇 |
1999年 | 29405篇 |
1998年 | 8031篇 |
1997年 | 7343篇 |
1996年 | 7311篇 |
1995年 | 6771篇 |
1994年 | 6527篇 |
1992年 | 22679篇 |
1991年 | 21577篇 |
1990年 | 21142篇 |
1989年 | 20341篇 |
1988年 | 18822篇 |
1987年 | 18586篇 |
1986年 | 17786篇 |
1985年 | 16839篇 |
1984年 | 12645篇 |
1983年 | 10803篇 |
1982年 | 6510篇 |
1979年 | 11585篇 |
1978年 | 8166篇 |
1977年 | 6844篇 |
1976年 | 6502篇 |
1975年 | 7174篇 |
1974年 | 8544篇 |
1973年 | 8149篇 |
1972年 | 7758篇 |
1971年 | 7127篇 |
1970年 | 6852篇 |
1969年 | 6391篇 |
1968年 | 6136篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
992.
Incorporation of apical lymph node status into the seventh edition of the TNM classification improves prediction of prognosis in stage III colonic cancer
下载免费PDF全文
![点击此处可从《The British journal of surgery》网站下载免费的PDF全文](/ch/ext_images/free.gif)
993.
994.
995.
Peter A. Smith MD Ken N. Kuo MD Adam N. Graf MS Joseph Krzak PT PhD Ann Flanagan PT Sahar Hassani MS Angela K. Caudill PT Fredrick R. Dietz MD Jose Morcuende MD Gerald F. Harris PE PhD 《Clinical orthopaedics and related research》2014,472(4):1281-1290
Background
Clubfoot can be treated nonoperatively, most commonly using a Ponseti approach, or surgically, most often with a comprehensive clubfoot release. Little is known about how these approaches compare with one another at longer term, or how patients treated with these approaches differ in terms of foot function, foot biomechanics, or quality-of-life from individuals who did not have clubfoot as a child.Questions/purposes
We compared (1) focused physical and radiographic examinations, (2) gait analysis, and (3) quality-of-life measures at long-term followup between groups of adult patients with clubfoot treated either with the Ponseti method of nonsurgical management or a comprehensive surgical release through a Cincinnati incision, and compared these two groups with a control group without clubfoot.Methods
This was a case control study of individuals treated for clubfoot at two separate institutions with different methods of treatment between 1983 to 1987. One hospital used only the Ponseti method and the other mainly used a comprehensive clubfoot release. There were 42 adults (24 treated surgically, 18 treated with Ponseti method) with isolated clubfoot along with 48 healthy control subjects who agreed to participate in a detailed analysis of physical function, foot biomechanics, and quality-of-life metrics.Results
Both treatment groups had diminished strength and motion compared with the control subjects on physical examination measures; however, the Ponseti group had significantly greater ankle plantar flexion ROM (p < 0.001), greater ankle plantar flexor (p = 0.031) and evertor (p = 0.012) strength, and a decreased incidence of osteoarthritis in the ankle and foot compared with the surgical group. During gait the surgical group had reduced peak ankle plantar flexion (p = 0.002), and reduced sagittal plane hindfoot (p = 0.009) and forefoot (p = 0.008) ROM during the preswing phase compared with the Ponseti group. The surgical group had the lowest overall ankle power generation during push off compared with the control subjects (p = 0.002). Outcome tools revealed elevated pain levels in the surgical group compared with the Ponseti group (p = 0.008) and lower scores for physical function and quality-of-life for both clubfoot groups compared with age-range matched control subjects (p = 0.01).Conclusions
Although individuals in each treatment group experienced pain, weakness, and reduced ROM, they were highly functional into early adulthood. As adults the Ponseti group fared better than the surgically treated group because of advantages including increased ROM observed at the physical examination and during gait, greater strength, and less arthritis. This study supports efforts to correct clubfoot with Ponseti casting and minimizing surgery to the joints, and highlights the need to improve methods that promote ROM and strength which are important for adult function.Level of Evidence
Level III, prognostic study. 相似文献996.
997.
998.
Most patients with colorectal liver metastases are treated within a multimodal therapy regime whereby liver resection is a key point in the curative treatment concept. The achievement of an R0 situation is of vital importance for long-term survival. Besides general operability and the assessment of comorbidities, resection depends on the quality of liver parenchyma (functional resectability) and the anatomical position of the tumor (oncological resectability). The improvement of operation techniques and perioperative medicine nowadays allow complex surgical procedures for metastasis surgery. This article presents the methods for the assessment of resectability and modern strategies of preoperative conditioning as well as approaches for extended liver resection. 相似文献
999.
Surgery remains the mainstay of potentially curative treatment of esophageal cancer; however, esophageal resection is still associated with a relevant morbidity and mortality. Furthermore, patients frequently suffer from concomitant comorbidities and present in a reduced nutritional status. The rationale of minimally invasive surgery is the reduction of surgical trauma with subsequent minimization of (pulmonary) complications and mortality without compromising oncological quality. Minimally invasive esophageal resection was established nearly two decades ago and since then some centers worldwide have adopted this approach as the preferred option for surgical treatment of esophageal cancer. Minimally invasive esophageal resection can be safely performed and provides excellent results in experienced hands. Currently, there is only one randomized trial available comparing open and minimally invasive resection. It was demonstrated that the latter significantly reduced pulmonary complications with comparable mortality and oncological outcome. However, in the majority of studies these convincing results could not be confirmed. Reduced blood loss and a shortened hospital stay were shown to be the main advantages of the minimally invasive approach. Due to technical modifications, patient selection and a remarkable heterogeneity of current studies, a final conclusion on the value of minimally invasive esophagectomy is difficult to be drawn. Based on the current evidence, a noncritical use of minimally invasive resection for esophageal cancer cannot be recommended; however, in selected patients and with appropriate expertise this approach is at least comparable to open esophagectomy. 相似文献
1000.
We report on the one-stage procedure surgical approach to an enormous scrotal hernia bearing the whole small bowel and part of the large bowel as a loss of domain situation. Using a mesh-based component separation abdominal wall technique according to Ramirez we managed to retrieve the hernia content into the abdominal cavity allowing reduction of the resulting intra-abdominal pressure. We present our surgical approach in detail and report on the postoperative process based on focused intensive care surveillance and specific surgical complication management leading to hospital discharge of the patient on postoperative day 57. 相似文献