全文获取类型
收费全文 | 1303758篇 |
免费 | 98153篇 |
国内免费 | 1658篇 |
专业分类
耳鼻咽喉 | 16620篇 |
儿科学 | 42605篇 |
妇产科学 | 36160篇 |
基础医学 | 194532篇 |
口腔科学 | 35221篇 |
临床医学 | 122916篇 |
内科学 | 254956篇 |
皮肤病学 | 27966篇 |
神经病学 | 106267篇 |
特种医学 | 47755篇 |
外国民族医学 | 265篇 |
外科学 | 182971篇 |
综合类 | 26279篇 |
现状与发展 | 4篇 |
一般理论 | 658篇 |
预防医学 | 110024篇 |
眼科学 | 28613篇 |
药学 | 95281篇 |
8篇 | |
中国医学 | 2065篇 |
肿瘤学 | 72403篇 |
出版年
2021年 | 11113篇 |
2019年 | 11492篇 |
2018年 | 15264篇 |
2017年 | 11560篇 |
2016年 | 12633篇 |
2015年 | 14414篇 |
2014年 | 19764篇 |
2013年 | 29755篇 |
2012年 | 40887篇 |
2011年 | 43240篇 |
2010年 | 24738篇 |
2009年 | 23723篇 |
2008年 | 39942篇 |
2007年 | 42658篇 |
2006年 | 41982篇 |
2005年 | 41006篇 |
2004年 | 39261篇 |
2003年 | 37371篇 |
2002年 | 36144篇 |
2001年 | 56458篇 |
2000年 | 57450篇 |
1999年 | 48551篇 |
1998年 | 13721篇 |
1997年 | 12430篇 |
1996年 | 12840篇 |
1995年 | 12090篇 |
1994年 | 11276篇 |
1992年 | 38484篇 |
1991年 | 37917篇 |
1990年 | 36653篇 |
1989年 | 35465篇 |
1988年 | 32871篇 |
1987年 | 32195篇 |
1986年 | 30681篇 |
1985年 | 28937篇 |
1984年 | 22058篇 |
1983年 | 19324篇 |
1982年 | 11442篇 |
1979年 | 21052篇 |
1978年 | 15446篇 |
1977年 | 12858篇 |
1976年 | 11900篇 |
1975年 | 12866篇 |
1974年 | 15669篇 |
1973年 | 15438篇 |
1972年 | 14587篇 |
1971年 | 13629篇 |
1970年 | 12826篇 |
1969年 | 12108篇 |
1968年 | 11272篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Michael T Fitch David E Manthey Henderson D McGinnis Bret A Nicks Manoj Pariyadath 《BMC medical education》2008,8(1):38
Background
Skin and soft tissue infections are increasingly prevalent clinical problems, and it is important for health care practitioners to be well trained in how to treat skin abscesses. A realistic model of abscess incision and drainage will allow trainees to learn and practice this basic physician procedure. 相似文献992.
993.
994.
995.
996.
Background contextLumbar zygapophyseal joint (Z-joint) synovial cysts can cause low back pain (LBP), spinal stenosis, and lower extremity radiculopathy. In the literature, there are several minimally invasive techniques described with mixed results. Typical recommended treatment is surgical resection of the cyst. Currently, there is little information available concerning the efficacy and outcome with treatment of Z-joint synovial cyst by percutaneous, fluoroscopic, contrast-enhanced distention, and rupture.PurposeTo evaluate the therapeutic value and safety of Z-joint cyst rupture in symptomatic patients.Study design/settingRetrospective cohort study in an academic outpatient physiatric spine practice.Patient sampleThirty-two patients with moderate-to-severe LBP and leg pain (18 women and 14 men with an age range of 46–86 y; mean age, 66 y) with an average preprocedure symptom duration of 5 months. The patient's clinical symptoms correlated with magnetic resonance imaging studies documenting the presence of a synovial cyst at the corresponding level and side of symptoms. Patients had at least 6 months follow-up (range, 6–24).Outcome measuresNumerical Pain Rating Scale, Roland-Morris Disability Questionnaire, North American Spine Society four-point patient satisfaction survey, recurrence of synovial cyst requiring repeat rupture, and need for surgical intervention.MethodsPatients with symptomatic lumbar Z-joint synovial cyst were identified and their charts were reviewed. Patients included in the study either had symptomatic lumbar LBP or LBP with associated lower extremity radiculopathy. All patients in the study had magnetic resonance imaging's documenting Z-joint synovial cyst that corresponded with the patients' clinical symptoms. All patients received fluoroscopically guided, contrast-enhanced, percutaneous facet cyst distention and rupture followed by an intra-articular facet joint injection of 1 cc kenalog and 1 cc of 1% lidocaine. Seventeen of the patients also received a transforaminal epidural steroid injection just before facet cyst rupture. Telephone follow-up was conducted on all patients.ResultsExcellent long-term (average follow-up 1 y; range, 6–24 mo) pain relief was achieved in 23 (72%) of 32 patients undergoing facet cyst rupture. Twelve patients (37.5%) had synovial cyst recurrence and 11 chose to undergo repeat rupture, which resulted in 5 patients (45%) obtaining complete relief of symptoms and 6 patients (55%) requiring surgical intervention for cyst removal. Fisher exact test demonstrated that all patients who did not have a cyst recurrence were a success and obtained complete relief of symptoms (p<.0002). Patients who underwent a repeat rupture had a 50% chance of a successful outcome. There was no statistical significance between a successful outcome and level of facet cyst rupture, the presence of spondylolisthesis, sex, age, or having a transforaminal epidural steroid injection at the time of the procedure. Wilcoxon signed-rank test demonstrated that the difference in Numerical Pain Rating Scale and Roland-Morris Disability Questionnaire scores before and after the procedure was statistically significant (p<.0001). No complications were reported.ConclusionsFluoroscopic percutaneous Z-joint cyst rupture appears to be a safe and effective minimally invasive treatment option. This procedure should be considered before surgical intervention. 相似文献
997.
N. S. Kalson C. P. Charalambous E. S. Powell A. Hearnden J. K. Stanley 《Hand (New York, N.Y.)》2009,4(3):279-282
A common distal radio-ulnar joint (DRUJ) stabilisation procedure uses a tendon graft running from the lip of the radial sigmoid
notch to the ulnar fovea and through a bony tunnel to the ulnar shaft, before being wrapped round the distal ulna and sutured
to itself. Such graft fixation can be challenging and requires a considerable tendon length. The graft length could be reduced
by fixing the graft to the ulna using a bone anchor or interference screw. The aim of this study was to compare the strength
of three distal ulna graft fixation methods (tendon wrapping and suturing, bone anchor and interference screw). Four human
cadaveric ulnae were used. A tendon strip was run through a tunnel in the distal ulna and secured by: (1) wrapping round the
shaft and suturing it to itself, (2) a bone anchor and (3) an interference screw in the bone tunnel. Load to failure was determined
using a custom-made apparatus and an Instron machine. Maximum failure load was highest for the bone anchor fixation (99.3 ± 23.7 N)
followed by the suturing (96.2 ± 12.1 N), and the interference screw fixation (46.9 ± 5.6 N). There was no significant difference
between the tendon suturing and bone anchor methods, but the tendon suturing was statistically significantly higher compared
to the interference screw (P = 0.028). In performing anatomical stabilisation of the DRUJ fixation of the tendon graft to the distal ulna with a bone
anchor provides the most secure fixation. This may make the stabilisation technique less demanding and require a smaller tendon
graft. 相似文献
998.
999.
IV. Intestinal Obstruction from Meckel's Diverticulum 总被引:1,自引:0,他引:1
Halstead AE 《Annals of surgery》1902,35(4):471-494
1000.