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   7170篇
  免费   468篇
  国内免费   157篇
耳鼻咽喉   166篇
儿科学   51篇
妇产科学   132篇
基础医学   1142篇
口腔科学   89篇
临床医学   508篇
内科学   1602篇
皮肤病学   273篇
神经病学   654篇
特种医学   403篇
外科学   990篇
综合类   17篇
一般理论   2篇
预防医学   150篇
眼科学   131篇
药学   536篇
中国医学   110篇
肿瘤学   839篇
  2024年   14篇
  2023年   74篇
  2022年   193篇
  2021年   291篇
  2020年   154篇
  2019年   211篇
  2018年   241篇
  2017年   220篇
  2016年   343篇
  2015年   487篇
  2014年   560篇
  2013年   543篇
  2012年   788篇
  2011年   812篇
  2010年   517篇
  2009年   383篇
  2008年   445篇
  2007年   402篇
  2006年   314篇
  2005年   270篇
  2004年   175篇
  2003年   120篇
  2002年   136篇
  2001年   15篇
  2000年   21篇
  1999年   14篇
  1998年   14篇
  1997年   11篇
  1996年   7篇
  1995年   8篇
  1994年   5篇
  1992年   1篇
  1991年   2篇
  1988年   1篇
  1985年   2篇
  1984年   1篇
排序方式: 共有7795条查询结果,搜索用时 15 毫秒
21.
22.
23.
24.
25.
26.

Background and Objective:

A recent FDA safety communication has discouraged the use of a power morcellator for myoma extraction and has called for a change in surgical techniques for myomectomy. The objective of this study was to compare surgical outcomes of laparoscopic single-, two-, and conventional three-port myomectomy and to evaluate the feasibility of contained manual morcellation for uterine myoma.

Methods:

This retrospective study was a review and analysis of data from 191 consecutive women who underwent single-, two-, or three-port myomectomy for the management of uterine myoma from January 1, 2009, through December 31, 2014.

Results:

The 3 study groups did not differ demographically. Apart from operative time, the single- and two-port groups showed operative outcomes comparable to those of the multiport group. The single-port group had significantly longer operative times (P = .0053) than the two- and three-port groups. However, in the latter half of the single-port cases, the operative time was similar to those in the three-port group. The two-port surgery group showed a consistent operative time without a learning period.

Conclusion:

Single- or two-port myomectomy with transumbilical myoma morcellation is feasible and safe, with outcomes comparable to those of three-port myomectomy. These results suggest the potential for minimally invasive management of symptomatic uterine myoma, without the use of a power morcellator.  相似文献   
27.

Background

Whether osteoarthritic patients with mild varus deformity can be indicated for high tibial osteotomy (HTO) is not established. We examined the preoperative characteristics and postoperative outcomes of HTO in patients with mild genu varum compared to patients with greater varus deformity.

Methods

Seventy-one patients who underwent HTO were included in this retrospective study. Patients were divided into either mild varus (MV, mechanical femorotibial angle (mFTA) ≤ 4°, n?=?31 (44%)) and greater varus (GV, mFTA > 4°, n?=?40 (56%)) groups. Preoperative characteristics on single photon emission computed tomography–computed tomography (SPECT–CT), magnetic resonance image and radiograph were evaluated. Alignment parameters and functional outcomes were compared pre- and postoperatively between the groups.

Results

Preoperative characteristics were similar between the two groups, except the severity of arthritis and coronal alignment. There was no difference in the proportion of hot uptake in the medial compartment; medial meniscus posterior horn root tear, complex or radial tear; bone marrow edema. Full-thickness cartilage defect of medial compartment was more frequent and arthritis grade was also more severe in GV group. Coronal alignment of the MV group was corrected into more valgus than the GV group (4.5° vs. 2.8° in mFTA, P?=?0.012). Pre- and postoperative Knee Society knee and function scores were also comparable in the two groups.

Conclusions

Mild varus patients are similar to greater varus patients regarding preoperative features and achieve the comparable functional outcome. A selected subset of osteoarthritic patients with mild varus deformity might be indicated for HTO.

Level of evidence

III (Retrospective comparative study).  相似文献   
28.
29.
30.
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