全文获取类型
收费全文 | 385215篇 |
免费 | 51959篇 |
国内免费 | 16626篇 |
专业分类
耳鼻咽喉 | 7159篇 |
儿科学 | 8309篇 |
妇产科学 | 7230篇 |
基础医学 | 31078篇 |
口腔科学 | 5642篇 |
临床医学 | 56668篇 |
内科学 | 85485篇 |
皮肤病学 | 10054篇 |
神经病学 | 27734篇 |
特种医学 | 14668篇 |
外国民族医学 | 96篇 |
外科学 | 66155篇 |
综合类 | 34238篇 |
现状与发展 | 117篇 |
一般理论 | 45篇 |
预防医学 | 21619篇 |
眼科学 | 9916篇 |
药学 | 24933篇 |
164篇 | |
中国医学 | 10880篇 |
肿瘤学 | 31610篇 |
出版年
2024年 | 1099篇 |
2023年 | 7579篇 |
2022年 | 9546篇 |
2021年 | 14222篇 |
2020年 | 14028篇 |
2019年 | 9548篇 |
2018年 | 15010篇 |
2017年 | 14006篇 |
2016年 | 14717篇 |
2015年 | 18141篇 |
2014年 | 27712篇 |
2013年 | 27014篇 |
2012年 | 22709篇 |
2011年 | 24407篇 |
2010年 | 21718篇 |
2009年 | 23225篇 |
2008年 | 18311篇 |
2007年 | 16624篇 |
2006年 | 18623篇 |
2005年 | 16013篇 |
2004年 | 11477篇 |
2003年 | 9517篇 |
2002年 | 8569篇 |
2001年 | 9724篇 |
2000年 | 9069篇 |
1999年 | 9563篇 |
1998年 | 7237篇 |
1997年 | 7069篇 |
1996年 | 6119篇 |
1995年 | 5764篇 |
1994年 | 4153篇 |
1993年 | 3045篇 |
1992年 | 3652篇 |
1991年 | 3391篇 |
1990年 | 2711篇 |
1989年 | 2616篇 |
1988年 | 2271篇 |
1987年 | 1995篇 |
1986年 | 1813篇 |
1985年 | 1457篇 |
1984年 | 1034篇 |
1983年 | 897篇 |
1982年 | 736篇 |
1981年 | 598篇 |
1980年 | 547篇 |
1979年 | 548篇 |
1978年 | 469篇 |
1977年 | 508篇 |
1975年 | 362篇 |
1972年 | 375篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
Two-level posterior lumbar interbody fusion for degenerative disc disease: improved clinical outcome with restoration of lumbar lordosis 总被引:2,自引:0,他引:2
Akira Hioki MD Kei Miyamoto MD PhD Hirotaka Kodama MD PhD Hideo Hosoe MD PhD Hirofumi Nishimoto MD Hirofumi Sakaeda MD PhD Katsuji Shimizu MD DMSc 《The spine journal》2005,5(6):600-607
BACKGROUND CONTEXT: Although posterior lumbar interbody fusion (PLIF) for degenerative lumbar diseases is routine, there are few reports on double-level PLIF. PURPOSE: To evaluate the clinical outcomes of double-level PLIF. STUDY DESIGN/SETTING: A retrospective study of operated cases in Gifu, Japan. PATIENT SAMPLE: Nineteen patients (8 men and 11 women, 59.5+/-10.2 years) who underwent double-level PLIF between 1996 and 2001. OUTCOME MEASURES: Operation time, blood loss, complications, the Japanese Orthopaedic Association (JOA) score for back pain and lumbar sagittal alignment were evaluated. METHODS: Patients were examined retrospectively at follow-ups of 3.6+/-1.7 years. Primary diseases were spondylolisthesis, spinal canal stenosis, degenerative scoliosis and herniated intervertebral disc. Fusion areas were L3 to L5 in 15 cases and L4 to S1 in 4 cases. RESULTS: The mean JOA score increased from an initial score of 12.9+/-3.5 to 21.3+/-4.9 at the final follow-up. There was a positive correlation (R=0.718, p<.001) between the increase in lordotic angle and the increase in the JOA score. Several parameters suggested that the surgical invasiveness was not minimal. CONCLUSION: Double-level PLIF provided satisfactory results and preserved lumbar spine lordosis. 相似文献
995.
BACKGROUND CONTEXT: Paraspinal infections after zygapophyseal (facet) radiofrequency denervation (RFD) are a serious but rare complication of this procedure. We are aware of only one case report of an epidural abscess after facet joint injection. PURPOSE: To report post-procedure inflammatory changes after cervical facet RFD. STUDY DESIGN: Case report. PATIENT SAMPLE: A 35-year-old Caucasian female. METHODS: Retrospective case review. RESULTS: The patient underwent cervical RFD and was admitted to the hospital 7 days after her procedure with severe neck pain. Magnetic resonance imaging (MRI) with contrast revealed what appeared to be evidence of a paraspinal muscle abscess although blood tests were negative. She was treated with antibiotic therapy, yet she never developed systemic signs of infection. A follow-up MRI without contrast revealed no evidence of infection, and she was discharged home on hospital day 6. At her first follow-up visit, she was still experiencing scalp pain and paraspinal muscle spasm. During subsequent follow-up visits, she has continued to improve clinically without experiencing signs of infection. Another follow-up MRI 6 weeks after her discharge home revealed persistent minimal left paraspinal enhancement at C2-3, possibly representing post-procedure granulation tissue with no evidence of abscess. CONCLUSIONS: Post-procedural MRI findings after radiofrequency lesioning can resemble radiographic findings associated with a paraspinal abscess. Patients with radiographic findings consistent with abscess should only be treated if clinical signs or symptoms of systemic infection are present. 相似文献
996.
997.
998.
Nonsurgical management of partial adhesive small-bowel obstruction with oral therapy: a randomized controlled trial 总被引:2,自引:0,他引:2
下载免费PDF全文
![点击此处可从《Canadian Medical Association journal》网站下载免费的PDF全文](/ch/ext_images/free.gif)
999.
In order to investigate the analgesic effect of needling at “Sitian” points for the nerve root-involved cervical spondylopathy, 68 cases of the nerve root-involved cervical spondylopathy were randomly divided into a treatment group of 46 cases treated by needling at "Sitian" points, and a control group of 22 cases treated by needling at cervical Jiaji points. After 2 therapeutic courses, the therapeutic effects were evaluated by using the visual analogue scale (VAS) and the semeiographic format. The results showed that the markedly effective rate was 78.3% and 54.5%, respectively in the treatment group and the control group, and the difference between the two groups was of significance (P〈0.05). It can be concluded that needling at “Sitian” points can bring about a better therapeutic effect on the improvement of clinical symptoms, ohvsical signs and pain than that of the needling at the cervical Jiaii points. 相似文献
1000.