全文获取类型
收费全文 | 20937篇 |
免费 | 1023篇 |
国内免费 | 90篇 |
专业分类
耳鼻咽喉 | 134篇 |
儿科学 | 327篇 |
妇产科学 | 241篇 |
基础医学 | 2402篇 |
口腔科学 | 603篇 |
临床医学 | 1344篇 |
内科学 | 5035篇 |
皮肤病学 | 372篇 |
神经病学 | 1606篇 |
特种医学 | 1047篇 |
外科学 | 3792篇 |
综合类 | 96篇 |
一般理论 | 1篇 |
预防医学 | 759篇 |
眼科学 | 538篇 |
药学 | 1552篇 |
中国医学 | 23篇 |
肿瘤学 | 2178篇 |
出版年
2021年 | 298篇 |
2020年 | 209篇 |
2019年 | 275篇 |
2018年 | 342篇 |
2017年 | 261篇 |
2016年 | 330篇 |
2015年 | 335篇 |
2014年 | 416篇 |
2013年 | 579篇 |
2012年 | 902篇 |
2011年 | 1016篇 |
2010年 | 577篇 |
2009年 | 492篇 |
2008年 | 905篇 |
2007年 | 1019篇 |
2006年 | 1051篇 |
2005年 | 994篇 |
2004年 | 975篇 |
2003年 | 851篇 |
2002年 | 884篇 |
2001年 | 896篇 |
2000年 | 911篇 |
1999年 | 761篇 |
1998年 | 251篇 |
1997年 | 200篇 |
1996年 | 207篇 |
1995年 | 145篇 |
1994年 | 147篇 |
1993年 | 125篇 |
1992年 | 525篇 |
1991年 | 487篇 |
1990年 | 477篇 |
1989年 | 465篇 |
1988年 | 409篇 |
1987年 | 405篇 |
1986年 | 407篇 |
1985年 | 389篇 |
1984年 | 231篇 |
1983年 | 184篇 |
1982年 | 88篇 |
1979年 | 179篇 |
1978年 | 111篇 |
1977年 | 102篇 |
1975年 | 87篇 |
1973年 | 95篇 |
1972年 | 91篇 |
1971年 | 84篇 |
1970年 | 109篇 |
1969年 | 91篇 |
1968年 | 85篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Kazuya Inoue Naoki Suenaga Naomi Oizumi Hiroshi Yamaguchi Naoki Miyoshi Noboru Taniguchi Noriaki Matsumura Shuzo Morita Shimpei Kurata Yasuhito Tanaka 《Seminars in Arthroplasty》2022,32(2):252-257
BackgroundIn shoulder arthroplasty, bone resorption around the stem can lead to stem loosening and makes surgery difficult at the time of revision. Proximal bone resorption after reverse shoulder arthroplasty can cause instability because of a decrease of deltoid wrapping effect. As factors of the stem itself, such as stem coating, shape, length, and use of bone cement, may also affect bone resorption, a single-stem model should be used to compare bone resorptions between different pathologies and surgical procedures. However, to date, a few reports have compared these differences in detail using a single-stem model. Therefore, we investigated the prevalence and location of humeral bone resorption in a single-stem model.MethodsThe study included 100 shoulders that underwent anatomical total shoulder arthroplasty (TSA) or humeral head replacement (HHR) with a single uncemented humeral stem from 2008 to 2018. The patients were 31 men and 69 women. The mean age at surgery was 72.9 years (range, 41-86 years). The patients were divided into three groups: especially, 25, 61, and 14 shoulders received TSA for primary osteoarthritis without rotator cuff tears (TSA group), HHR using an anatomical head with rotator cuff repair for cuff tear arthropathy (CTA) (HHR group), and HHR using a CTA head without rotator cuff repair (CTA group), respectively. Patients were monitored for a mean of 56 months (range, 12-98 months). The location of bone resorption was divided into seven zones as follows: zone 1, greater tuberosity; zone 2, lateral diaphysis; zone 3, lateral diaphysis beyond the deltoid tuberosity; zone 4, tip of the stem; zone 5, medial diaphysis beyond the deltoid tuberosity; zone 6, medial diaphysis; and zone 7, calcar region. The degree of bone resorption was classified from grade 0 to 4.ResultsBone resorption of grade 3 or higher was significantly more frequent at the greater tuberosity in the HHR and CTA groups (P < .001 and P < .001, respectively) than that in the TSA group. Grade 4 bone resorption was significantly more frequent in the CTA than that in the TSA and HHR groups in zone 1 (P = .016 and P = .041, respectively).ConclusionThe state of attachment of the rotator cuff to the greater tuberosity might affect bone resorption at the greater tuberosity, such as the greater tuberosity after shoulder arthroplasty. In cases of shoulder arthroplasty for arthropathy with rotator cuff tear, performing rotator cuff repair might prevent bone resorption.Level of evidenceLevel IV; Prognosis Study 相似文献
2.
3.
4.
Eric Wang Sydney X. Lu Alessandro Pastore Xufeng Chen Jochen Imig Stanley Chun-Wei Lee Kathryn Hockemeyer Yohana E. Ghebrechristos Akihide Yoshimi Daichi Inoue Michelle Ki Hana Cho Lillian Bitner Andreas Kloetgen Kuan-Ting Lin Taisuke Uehara Takashi Owa Raoul Tibes Iannis Aifantis 《Cancer cell》2019,35(3):369-384.e7
5.
6.
7.
Rika Yoshimatsu Takuji Yamagami Miki Nishimori Kenta Ogi Yoriko Murata Hitomi Iwasa Kenji Kajiwara Tomoaki Yamanishi Hiroki Minamiguchi Takashi Karashima Keiji Inoue 《Journal of vascular and interventional radiology : JVIR》2019,30(3):460-465
Purpose
To evaluate the influence of percutaneous cryoablation for renal cell carcinoma on function of the affected kidney.Materials and Methods
Between June 2016 and September 2017 at our institution, 12 inoperable patients underwent 15 cryoablation sessions for 17 small renal tumors. Of these, 9 patients who underwent 11 sessions of cryoablation were the focus of this study. For those patients, time-dependent changes in postoperative renal function were investigated by a retrospective review of clinical records. Evaluated were the estimated glomerular filtration rate (eGFR) and scintigraphy using 99m technetium-mercaptoacetyltriglycine (99mTc-MAG3) before and 1 week, 1–2 months, and more than 6 months after cryoablation.Results
Mean baseline eGFR was 76.88 ± 29.82 mL/min/1.73 m2 (mean ± standard deviation; range, 23.4–112.5). Mean eGFR 1 week, 1–2 months, and more than 6 months after cryoablation were 74.56 ± 26.68 mL/min/1.73 m2 (21.0–101.1), 69.5 ± 25.28 mL/min/1.73 m2 (24.1–105.6), and 75.08 ± 26.25 mL/min/1.73 m2 (29.0–107.3), respectively. Changes were statistically insignificant (P = .6044, P = .6699, and P = .9038, respectively). Regarding split renal function, the mean baseline contribution of the affected kidney determined by 99mTc-MAG3 was 47.27% ± 6.14 (38.8%–57.0%). Mean contributions of the affected kidney 1 week after, 1–2 months after, and more than 6 months after cryoablation were 44.40% ± 5.37 (38.3%–53.6%), 44.57% ± 6.52 (34.35%–55.0%), and 45.41% ± 7.77 (34.4%–56.5%), respectively. Differences from baseline were significant for the earliest 2 periods (P = .0473 and P = .0334, respectively) but not the later period (P = .2532).Conclusions
Results suggested that total renal function does not worsen after cryoablation; however, function of the affected kidney worsened after cryoablation but later partially recovered. 相似文献8.
9.