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   1604篇
  免费   69篇
  国内免费   81篇
耳鼻咽喉   1篇
儿科学   68篇
妇产科学   11篇
基础医学   182篇
口腔科学   28篇
临床医学   254篇
内科学   333篇
皮肤病学   42篇
神经病学   67篇
特种医学   379篇
外科学   108篇
综合类   38篇
一般理论   1篇
预防医学   50篇
眼科学   17篇
药学   87篇
肿瘤学   88篇
  2022年   6篇
  2021年   9篇
  2019年   15篇
  2018年   11篇
  2017年   10篇
  2016年   12篇
  2015年   20篇
  2014年   17篇
  2013年   30篇
  2012年   40篇
  2011年   40篇
  2010年   60篇
  2009年   53篇
  2008年   37篇
  2007年   77篇
  2006年   35篇
  2005年   40篇
  2004年   22篇
  2003年   26篇
  2002年   28篇
  2001年   34篇
  2000年   43篇
  1999年   42篇
  1998年   99篇
  1997年   91篇
  1996年   114篇
  1995年   85篇
  1994年   92篇
  1993年   79篇
  1992年   32篇
  1991年   42篇
  1990年   39篇
  1989年   39篇
  1988年   43篇
  1987年   33篇
  1986年   41篇
  1985年   38篇
  1984年   15篇
  1983年   27篇
  1982年   22篇
  1981年   21篇
  1980年   17篇
  1979年   4篇
  1978年   9篇
  1977年   15篇
  1976年   14篇
  1975年   7篇
  1968年   3篇
  1967年   3篇
  1966年   3篇
排序方式: 共有1754条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
We report a prospective randomised trial comparing Keller's arthroplasty and arthrodesis of the first metatarsophalangeal joint for the management of symptomatic hallux valgus and hallux rigidus in the older patient. In 81 patients (110 feet), with a minimum of two years follow-up, both procedures gave a similar degree of patient satisfaction and symptom relief. The incidence of metatarsalgia was also similar. As there were no obvious advantages to arthrodesis, and since six out of 50 arthrodesed toes required revision, we suggest that Keller's arthroplasty is the better operation in these patients.  相似文献   
6.
7.
8.
9.
BACKGROUND: Knowledge of the prevalence of peripheral arterial disease (PAD) in patients with chronic renal failure (CRF) is limited because of a lack of uniformity in disease definition and recognition. Furthermore, little is known of the prevalence of medial arterial calcification (MAC) in patients with CRF. Our goal is to study the prevalence of PAD and MAC defined by ankle brachial index (ABI) or toe brachial index (TBI) measurements in a Finnish population of patients with CRF consisting of predialysis and dialysis patients, as well as renal transplant recipients. METHODS: We examined 136 patients with CRF and 59 control subjects. Fifty-nine of the patients with CRF had moderate to severe predialysis CRF, 36 patients were on dialysis treatment, and 41 were renal transplant recipients. Mean age of patients was 51.9 +/- 11.5 years, and 39 patients (29%) had diabetes. ABI and TBI were measured by means of photoplethysmography. The definition of PAD required an ABI value of 0.90 or less, a TBI value of 0.60 or less, or a previous positive lower-extremity angiogram result. ABI values of 1.3 or greater or incompressible arteries at ankle level indicated MAC. The presence of claudication was determined by an interview. RESULTS: Prevalences of PAD on this study were 22.0% in patients with predialysis CRF, 30.6% in patients on dialysis treatment, 14.6% in renal transplant recipients, and 1.7% in the control group (P = 0.001). Prevalences of MAC were 23.7%, 41.7%, 23.1%, and 3.4% (P < 0.001), respectively. Only 9 patients had claudication, and 6 of those patients had PAD. CONCLUSION: Both asymptomatic PAD and MAC are common in patients with CRF. Therefore, we recommend the use of both ABI and TBI measurements in the evaluation of PAD in patients with CRF.  相似文献   
10.
We used arthrotomography to study the glenoid labrum in 114 patients. Sixty-nine of the patients had anatomic instability of the shoulder (including recurrent dislocation and subluxation of the shoulder), and 45 patients had functional instability of the shoulder (denoted by chronic pain, clicking of the joint, and the sensation that an unstable condition exists without the objective signs of it). Labral tears were revealed arthrotomographically in 86% of the patients with anatomic instability, while only 40% of the patients with functional instability had labral abnormalities, and these were primarily of minor severity. Fifty-six patients (44 of whom had anatomic instability; 12, functional instability) required surgery. The surgical findings were correlated with the arthrotomographic findings, and no false-positive results were revealed. However, arthrotomography demonstrated only part of the pathologic condition of two patients. These results confirm that there is a strong correlation between labral pathologic conditions and anatomic instability of the shoulder. Arthrotomographic studies have a great impact on the selection of therapy in cases of both anatomic and functional instability of the shoulder.  相似文献   
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