全文获取类型
收费全文 | 252458篇 |
免费 | 13744篇 |
国内免费 | 7153篇 |
专业分类
耳鼻咽喉 | 3378篇 |
儿科学 | 9613篇 |
妇产科学 | 3329篇 |
基础医学 | 19061篇 |
口腔科学 | 4537篇 |
临床医学 | 30610篇 |
内科学 | 43519篇 |
皮肤病学 | 3129篇 |
神经病学 | 11617篇 |
特种医学 | 13798篇 |
外国民族医学 | 23篇 |
外科学 | 44270篇 |
综合类 | 23084篇 |
现状与发展 | 25篇 |
预防医学 | 15915篇 |
眼科学 | 4465篇 |
药学 | 25395篇 |
99篇 | |
中国医学 | 5976篇 |
肿瘤学 | 11512篇 |
出版年
2023年 | 2733篇 |
2022年 | 6238篇 |
2021年 | 12126篇 |
2020年 | 7849篇 |
2019年 | 12895篇 |
2018年 | 7593篇 |
2017年 | 6333篇 |
2016年 | 8057篇 |
2015年 | 11055篇 |
2014年 | 20242篇 |
2013年 | 17775篇 |
2012年 | 20209篇 |
2011年 | 17280篇 |
2010年 | 15655篇 |
2009年 | 15246篇 |
2008年 | 13694篇 |
2007年 | 13675篇 |
2006年 | 11534篇 |
2005年 | 7715篇 |
2004年 | 4140篇 |
2003年 | 3566篇 |
2002年 | 2885篇 |
2001年 | 2285篇 |
2000年 | 2106篇 |
1999年 | 1329篇 |
1998年 | 1795篇 |
1997年 | 1587篇 |
1996年 | 1319篇 |
1995年 | 1363篇 |
1994年 | 1270篇 |
1993年 | 985篇 |
1992年 | 1216篇 |
1991年 | 1042篇 |
1990年 | 1086篇 |
1989年 | 1057篇 |
1988年 | 994篇 |
1987年 | 876篇 |
1986年 | 709篇 |
1985年 | 1623篇 |
1984年 | 1770篇 |
1983年 | 1277篇 |
1982年 | 1370篇 |
1981年 | 1351篇 |
1980年 | 1162篇 |
1979年 | 1004篇 |
1978年 | 769篇 |
1977年 | 773篇 |
1976年 | 673篇 |
1975年 | 443篇 |
1974年 | 454篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
皮肤损伤后的异常愈合会导致病理性瘢痕的产生。病理性瘢痕的出现不仅影响美观,严重时还会造成心理和生理功能障碍。病理性瘢痕的机制研究对于瘢痕治疗有极为重要的意义。其中,动物瘢痕模型是目前研究病理性瘢痕的重要模型手段之一。理想的动物瘢痕模型应该在组织学、细胞学等层面尽可能接近于人类的病理性瘢痕。该文分别从传统技术动物瘢痕中的啮齿类动物模型、兔耳模型和猪模型,以及新技术动物瘢痕模型这两个方面,结合近年来在瘢痕领域应用较多的研究,进行了相应系统的阐述。 相似文献
52.
53.
《The Journal of arthroplasty》2022,37(2):252-258
BackgroundThe goal of this study is to investigate the migration and inducible displacement of a bicruciate-stabilized (BCS) total knee arthroplasty implanted using gap balancing (GB) or measured resection (MR) surgical techniques. We hypothesized equal migration and displacement between the techniques.MethodsThe study is a single-blinded, prospective, randomized controlled trial, with allocation of 71 patients to either GB or MR groups. Fifteen patients were withdrawn, resulting in 31 patients in the GB group and 25 in the MR group. Patients received the JOURNEY II? BCS implant. Migration and inducible displacement were evaluated using radiostereometric analysis and patient examinations were performed at a 2-week baseline, and at 6 weeks, 3 months, 6 months, 1 year, and 2 years postoperation.ResultsNo differences (P > .05) existed between GB and MR groups for any measurement of tibial or femoral migration. Both groups had tibial migrations below 0.5 mm from baseline to 6 months, and below 0.2 mm from both 6 months to 1 year and 1-2 years postoperation. No differences (P > .05) were found between GB and MR groups for inducible displacement.ConclusionNo differences were found in implant migration or inducible displacement between GB and MR groups. The BCS implant can be expected to have migration risks on par with industry standards and both surgical techniques are safe and effective options for implantation of this implant design. 相似文献
54.
《The Journal of arthroplasty》2022,37(10):2090-2096
BackgroundIt remains unclear whether reimplantation of a patellar component during a two-stage revision for periprosthetic total knee arthroplasty infection (PJI) affects patient reported outcome measures (PROMs) or implant survivorship. The purpose of this study was to evaluate whether patellar resurfacing during reimplantation confers a functional benefit or increases implant survivorship after two-stage treatment for PJI.MethodsTwo-stage revisions for knee PJI performed by three surgeons at a single tertiary care center were reviewed retrospectively. All original patellar components and cement were removed during resection and the patella was resurfaced whenever feasible during reimplantation. PROMs, implant survivorship, and radiographic measurements (patellar tilt and displacement) were compared between knees reimplanted with a patellar component versus those without a patellar component.ResultsA total of 103 patients met the inclusion criteria. Forty-three patients (41.7%) underwent reimplantation with, and 60 patients (58.3%) without a patellar component. At a mean follow-up of 33.5 months, there were no significant differences in patient demographics or PROMs between groups (P ≥ .156). No significant differences were found in the estimated Kaplan-Meier all-cause, aseptic, or septic survivorship between groups (P ≥ .342) at a maximum of 75 months follow-up. There was no significant difference in the change (pre-resection to post-reimplant) of patellar tilt (P = .504) or displacement (P = .097) between the groups.ConclusionPatellar resurfacing during knee reimplantation does not appear to meaningfully impact postoperative PROMs or survivorship. Given the risk of potential extensor mechanism complications with patellar resurfacing, surgeons may choose to leave the patella without an implant during total knee reimplantation and expect similar clinical outcomes.Level of EvidenceLevel III. 相似文献
55.
56.
57.
复杂性胸壁缺损的修复一直是一项极具挑战性的工作。肿瘤性复杂性胸壁缺损的修复决策及其执行困难是限制胸壁肿瘤治疗方法选择及影响预后的重要因素之一。皮瓣解剖学研究的深入、胸壁支持结构重建技术的进步、显微外科技术的发展、麻醉护理的发展、对综合治疗的重视和治疗手段的进步等,使传统认为不可切除的胸壁肿瘤得以彻底地切除和安全有效地修复,从而使与缺损修复相关的肿瘤切除及辅助治疗的禁忌证缩减到最小程度,有效地提高了胸壁肿瘤患者的生存质量,并很大程度上延长了生存率。作者以湖南省肿瘤医院整形外科15年565例胸壁肿瘤切除后修复重建的临床资料为依据,充实了胸壁肿瘤切除及修复的策略:(1)可靠的胸壁骨性支架重建;(2)有效的软组织修复;(3)麻醉及护理与手术团队的合作;(4)系统有序的综合治疗。并进一步明确了复杂胸壁肿瘤切除及重建的细节理念,包括胸部肿瘤治疗中加强多学科合作的密切性和科学性,整形外科医生参与肿瘤治疗整体规划的主动性和时机前移等。 相似文献
58.
59.
60.