首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1977943篇
  免费   143468篇
  国内免费   3358篇
耳鼻咽喉   28743篇
儿科学   67798篇
妇产科学   52903篇
基础医学   289429篇
口腔科学   54558篇
临床医学   173683篇
内科学   387012篇
皮肤病学   44855篇
神经病学   152828篇
特种医学   78455篇
外国民族医学   738篇
外科学   301470篇
综合类   40159篇
现状与发展   3篇
一般理论   545篇
预防医学   144269篇
眼科学   45506篇
药学   147834篇
  5篇
中国医学   4714篇
肿瘤学   109262篇
  2018年   21737篇
  2017年   16680篇
  2016年   18982篇
  2015年   21295篇
  2014年   28491篇
  2013年   43102篇
  2012年   59292篇
  2011年   61836篇
  2010年   36791篇
  2009年   34262篇
  2008年   58848篇
  2007年   63267篇
  2006年   63883篇
  2005年   62170篇
  2004年   60486篇
  2003年   58467篇
  2002年   57284篇
  2001年   95730篇
  2000年   98690篇
  1999年   83311篇
  1998年   22502篇
  1997年   19922篇
  1996年   20238篇
  1995年   19085篇
  1994年   17944篇
  1993年   16594篇
  1992年   64061篇
  1991年   62965篇
  1990年   61298篇
  1989年   59141篇
  1988年   54208篇
  1987年   53031篇
  1986年   49613篇
  1985年   47311篇
  1984年   35349篇
  1983年   29714篇
  1982年   17046篇
  1981年   15414篇
  1979年   31802篇
  1978年   22243篇
  1977年   18834篇
  1976年   17714篇
  1975年   19512篇
  1974年   22652篇
  1973年   21735篇
  1972年   20200篇
  1971年   18618篇
  1970年   17669篇
  1969年   16089篇
  1968年   14840篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.

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   
42.

Background and objectives

A prompt and effective management of trauma patient is necessary. The aim of this case report is to highlight the importance of intraoperative echocardiography as a useful tool in patients suffering from refractory hemodynamic instability no otherwise explained.

Case report

A 41 year‐old woman suffered a car accident. At the emergency department, no abnormalities were found in ECG or chest X‐ray. Abdominal ultrasound revealed the presence of abdominal free liquid and the patient was submitted to urgent exploratory laparotomy. Nevertheless, she persisted suffering arterial hypotension and metabolic acidosis. Looking for the reason of her hemodynamic instability, intraoperative transthoracic echocardiography was performed, finding out the presence of pericardial effusion. Once the cardiac surgeon extracted pericardial clots, patient's situation improved clinically and analytically.

Conclusion

Every anesthesiologist should be able to use the intraoperative echocardiography as an effective tool in order to establish the appropriate measures to promote the survival of patients suffering severe trauma.  相似文献   
43.
44.
45.
46.
47.
48.
49.
We report two British cases of liver abscess, due to Klebsiella pneumoniae and associated with synchronous infection elsewhere, which required liver resection for definitive treatment. They illustrate the geographic spread of aggressive K pneumoniae liver infection and demonstrate the importance of early aggressive treatment.  相似文献   
50.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号