全文获取类型
收费全文 | 1884篇 |
免费 | 99篇 |
国内免费 | 30篇 |
专业分类
耳鼻咽喉 | 45篇 |
儿科学 | 16篇 |
妇产科学 | 5篇 |
基础医学 | 117篇 |
口腔科学 | 90篇 |
临床医学 | 298篇 |
内科学 | 142篇 |
皮肤病学 | 38篇 |
神经病学 | 52篇 |
特种医学 | 64篇 |
外科学 | 812篇 |
综合类 | 165篇 |
现状与发展 | 1篇 |
预防医学 | 35篇 |
眼科学 | 5篇 |
药学 | 62篇 |
1篇 | |
中国医学 | 18篇 |
肿瘤学 | 47篇 |
出版年
2023年 | 37篇 |
2022年 | 61篇 |
2021年 | 84篇 |
2020年 | 87篇 |
2019年 | 84篇 |
2018年 | 80篇 |
2017年 | 67篇 |
2016年 | 53篇 |
2015年 | 44篇 |
2014年 | 108篇 |
2013年 | 186篇 |
2012年 | 90篇 |
2011年 | 82篇 |
2010年 | 71篇 |
2009年 | 66篇 |
2008年 | 80篇 |
2007年 | 83篇 |
2006年 | 84篇 |
2005年 | 56篇 |
2004年 | 49篇 |
2003年 | 45篇 |
2002年 | 41篇 |
2001年 | 41篇 |
2000年 | 26篇 |
1999年 | 32篇 |
1998年 | 38篇 |
1997年 | 25篇 |
1996年 | 20篇 |
1995年 | 16篇 |
1994年 | 10篇 |
1993年 | 14篇 |
1992年 | 25篇 |
1991年 | 10篇 |
1990年 | 19篇 |
1989年 | 7篇 |
1988年 | 7篇 |
1987年 | 8篇 |
1986年 | 6篇 |
1985年 | 4篇 |
1984年 | 2篇 |
1983年 | 6篇 |
1982年 | 11篇 |
1981年 | 6篇 |
1980年 | 3篇 |
1979年 | 7篇 |
1978年 | 9篇 |
1977年 | 8篇 |
1976年 | 8篇 |
1975年 | 2篇 |
1972年 | 2篇 |
排序方式: 共有2013条查询结果,搜索用时 109 毫秒
1.
2.
M.A. Mashrah T.A. Aldhohrah A. Abdelrehem Moustafa H.M. Al-Sharani A. Alrmali L. Wang 《International journal of oral and maxillofacial surgery》2021,50(1):21-31
Donor site morbidity following radial forearm flap (RFF) harvest remains a controversial issue. The aim of this meta-analysis was to answer the question “Are the range of wrist movements (range of motion, ROM) and hand strength affected after RFF harvesting?” The PubMed, Embase, Scopus, and Cochrane Library electronic databases were systematically searched (to December 2019). Self-controlled studies evaluating hand biomechanics after RFF harvest were included. Weighted mean differences with 95% confidence intervals were calculated using the random-effects model. The outcome variables were ROM, forearm movements, grip, and pinch strengths. Thirteen studies involving a total of 335 patients were included. With the exception of grip strength and supination, which showed statistically significant reductions of about 2.40 kg and 2.86° (P < 0.05), all other ROM, forearm movements, and pinch strengths showed an insignificant difference when the operated hand was compared to the non-operated hand (P > 0.05). Regression analysis showed that the method of donor site closure and size of the donor site defect had an insignificant impact on hand biomechanics. This study confirms the lack of discernible biomechanical morbidity after RFF transfer. The minimal reduction in hand biomechanics after RFF is considered to be clinically negligible. 相似文献
3.
4.
5.
皮肤再生医疗技术治疗糖尿病足溃疡疗效分析 总被引:14,自引:8,他引:6
目的:分析、总结、探讨皮肤再生医疗技术在临床上治疗糖尿病足溃疡的可行性与有效性。方法:对32例糖尿病足溃疡住院病人采用皮肤再生医疗技术为主、必要时配合植皮的治疗方法进行局部创面修复。结果:32例糖尿病足溃疡应用皮肤再生医疗技术获得修复9例(占28.1%),皮肤再生医疗技术 皮片移植12例(占37.5%),皮肤再生医疗技术 皮瓣修复5例(占15.6%),进行截肢6例(占18.8%)。结论:及时就诊、及时采用皮肤再生医疗技术为主的治疗方法能有效修复溃疡创面、降低糖尿病足截肢率。 相似文献
6.
目的为前臂肌腱部分移位修复桡尺远侧关节脱位提供解剖学依据。方法30侧成人上肢标本,将尺侧腕屈肌腱、尺侧腕伸肌腱、桡侧腕长伸肌腱、肱桡肌腱作形态学测量,将尺侧腕屈肌腱、尺侧腕伸肌腱进行力学测试。结果尺侧腕屈肌腱长(16.7±2.7)cm;尺侧腕伸肌腱长(14.9±2.5)mm;桡侧腕长伸肌腱长(19.0±2.0)cm;肱桡肌腱长(11.7±2.4)cm。力学测试:尺侧腕屈、伸肌腱其全肌腱破坏载荷分别为(2.4±0.9)Mpa、(3.1±0.9)Mpa,半肌腱破坏载荷分别为(2.2±0.9)Mpa、(2.5±0.8)Mpa,t检验无显著性差异。结论前臂肌腱部分转位有足够的长度和强度修复桡尺远侧关节脱位。 相似文献
7.
Described in 1981 by the Chinese authors Yang Kuofan et al. [1] as a free flap, then in 1982 by Lu et al. [2] as a retrograde
flow pedicle flap, this fasciocutaneous flap is designed at the level of the anterior and external faces of the forearm, and
vascularized by the radial artery via a network of septal arteries. Prior to utilization it must be reversed on its distal
pedicle. This flap allows repairing cutaneous substance loss of the whole hand and fingers. The emergence of the Chinese flap
in the 1980’s resulted in a regression of the Mac Gregor groin flap that was widely used at this time [3,4]. Nevertheless,
other forearm flaps, less “expensive” in terms of vascular involvement [5–9] have reduced its indications. The Chinese flap
however keeps two essential indications: the multi-finger important defect that no other forearmflapmay cover; and composite
substance loss of the thumb (despite the fact that the Chinese flap shares these indications with interosseous artery composite
flaps). 相似文献
8.
Chenicheri Balakrishnan Gil Altman Abdullah J Khalil 《CANADIAN JOURNAL OF PLASTIC SURGERY》2005,13(4):209-211
During lower extremity amputation, the objective is to provide a functional residual limb that permits maximum patient mobility and independence. Preservation of length of the fore part of the foot using salvageable tissue from the amputated part in young patients prevents equines deformity and revision of amputation to a higher level. This can be achieved using tissue available from the amputated part. The spare part concept in reconstructive surgery should be integrated into the trauma algorithm to avoid additional donor site morbidity. Reported here is a young adult patient with crush injuries to both feet, which resulted in amputations. A fasciocutaneous flap raised from one extremity was used to facilitate transmetatarsal amputation stump length preservation of the other extremity. 相似文献
9.
目的:提高前臂预成皮瓣整复术的护理水平.方法:通过术前心理护理,供区的皮肤保护,口腔装备,术后环境准备和卧位,皮瓣观察,切口护理,饮食和口腔护理进行评价.结果:预成皮瓣正常成活,色泽红润如期修复腭部缺损.结论:良好的护理可以提高前臂预成瓣移植的成功率. 相似文献
10.
Manuel Sosa P. Saavedra J. del Pino-Montes J. Alegre R. Pérez-Cano G. Martínez Díaz Guerra M. Díaz-Curiel C. Valero M. Muñoz-Torres A. Torrijos J. Mosquera C. Gómez-Alonso GIUMO Study Group 《Journal of clinical densitometry》2005,8(4):430-435
Measurement of ultrasonographic parameters provides information concerning not only bone density but also bone architecture. We investigated the usefulness of ultrasonographic parameters and bone mineral density (BMD) to evaluate the probability of Colles' fracture. Two-hundred eighty-nine postmenopausal women (62.3 +/- 8.7 yr) with (n = 76) and without (n = 213) Colles' fracture were studied. BMD of lumbar spine and proximal femur was evaluated in all women by dual-energy X-ray absorptiometry (DXA) and speed of sound (SOS), broadband ultrasound attenuation (BUA), and stiffness in the calcaneus were measured by a Sahara ultrasonometer (Hologic). Patients suffering from Colles' fracture had lower values of BMD adjusted by height at the lumbar spine, L2-L4 (0.797 g/cm2 vs 0.860 g/cm2), femoral neck (0.685 g/cm2 vs 0.712 g/cm2 ), SOS (1518 m/sg vs 1525 m/sg), and stiffness (74.6 vs 77.7) (p < 0.05). Nevertheless, BUA values were similar in both groups. After stepwise logistic regression analysis, the area found under receiver operating characteristic (ROC) curves was 0.60 for L2L4 and 0.63 for a formula combining L2L4 and height. Our data suggest that patients suffering from Colles' fracture have lower values of BMD by DXA, SOS, and stiffness. However, the ability of these techniques to discriminate is low because the values for the area under ROC curve are 0.60 for L2-L4 and 0.63 for a formula derived of the combination of L2-L4 and height. 相似文献