全文获取类型
收费全文 | 705篇 |
免费 | 35篇 |
国内免费 | 1篇 |
专业分类
儿科学 | 8篇 |
基础医学 | 54篇 |
临床医学 | 33篇 |
内科学 | 2篇 |
特种医学 | 44篇 |
外科学 | 459篇 |
综合类 | 76篇 |
预防医学 | 22篇 |
药学 | 27篇 |
中国医学 | 13篇 |
肿瘤学 | 3篇 |
出版年
2023年 | 4篇 |
2022年 | 19篇 |
2021年 | 21篇 |
2020年 | 22篇 |
2019年 | 26篇 |
2018年 | 13篇 |
2017年 | 21篇 |
2016年 | 24篇 |
2015年 | 16篇 |
2014年 | 32篇 |
2013年 | 53篇 |
2012年 | 55篇 |
2011年 | 46篇 |
2010年 | 62篇 |
2009年 | 42篇 |
2008年 | 35篇 |
2007年 | 40篇 |
2006年 | 25篇 |
2005年 | 33篇 |
2004年 | 27篇 |
2003年 | 18篇 |
2002年 | 14篇 |
2001年 | 17篇 |
2000年 | 13篇 |
1999年 | 17篇 |
1998年 | 8篇 |
1997年 | 10篇 |
1996年 | 7篇 |
1995年 | 3篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 3篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1988年 | 2篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1979年 | 1篇 |
1976年 | 2篇 |
排序方式: 共有741条查询结果,搜索用时 78 毫秒
1.
2.
异体跟骨移植及腓肠神经营养血管皮瓣修复跟骨缺损 总被引:1,自引:0,他引:1
目的 探讨应用同种异体跟骨移植及腓肠神经营养血管逆行岛状皮瓣 ,修复跟骨缺损的临床效果。 方法 1996年 2月~ 2 0 0 2年 12月 ,采用同种异体跟骨移植及吻合腓肠神经营养血管皮瓣修复足跟骨缺损 6例。致伤原因为车祸伤 3例 ,机器绞扎伤 2例 ,砸伤 1例。其中跟骨后 1/ 3缺损 3例 ,后 1/ 2缺损 2例 ,后 2 / 3缺损 1例 ,均伴有足跟软组织不同程度缺损和跟腱断裂。皮瓣范围 6 cm× 7cm~ 12 cm× 17cm。急诊手术 2例 ,择期手术 4例。采用异体骨修复跟骨缺损 ,跟腱“Z”字形延长钢丝固定于再造跟骨粗隆处 ,修复软组织缺损。 结果 4例皮瓣全部成活 ,2例皮瓣远端部分坏死 ,经换药后创面愈合。术后 X线片显示 :移植异体骨对位良好 ,恢复了足跟结构。术后 3~ 6个月足跟部皮瓣感觉恢复。所有患者均获随访 6个月~ 3年 ,植入的异体骨骨性愈合 ,未见明显吸收、感染和排斥反应等并发症。足外形饱满 ,可负重行走。 结论 应用同种异体跟骨修复跟骨缺损 ,取材方便 ,且符合人体自然结构及功能要求。采用腓肠神经营养血管皮瓣 ,不牺牲肢体的主要血管 ,手术风险小 ,操作简便、外形好、有感觉 ,可恢复行走功能 相似文献
3.
4.
跟骨丘部重建距下关节融合治疗跟骨骨折严重畸形愈合 总被引:14,自引:3,他引:11
目的介绍自体植骨丘部重建距下关节融台术治疗严重跟骨骨折畸形愈台的方法,探讨手术适应证及优、缺点。方法1998年11月~2002年8月.对17例21足跟骨骨折严重畸形愈台患者采用自体植骨丘部重建距下关节融台的方法进行治疗.男13例17足.女4例4足;年龄25~45岁,平均35.4岁;单侧跟骨骨折13侧13足,双侧4例8足.选择跟骨外侧改良“L”形切口行自体植骨丘部重建距下关节融合术,其中15例17足取髂骨植骨,1例2足分别取髂骨植骨和跟骨外膨的外侧壁植骨.1例2足取跟骨外膨的外侧壁植骨。所有跟骨外嘭的外删壁均做切除.结果15例18足获得随访。随访时间9~22个月,平均14.5个月。按Maryland方法评价术后功能:优7足,良9足,可2足;优良率为88.9%,X线片示Bohler角、Gissane角、距骨倾斜角、跟骨宽度及丘部高度基本恢复正常,结论自体植骨丘部重建距下关节融台术是治疗严重跟骨骨折畸形愈合的一种有技方法。可明显矫正跟骨畸形.恢复后足外形及功能。 相似文献
5.
L. Rosenthall 《Calcified tissue international》1997,61(2):139-141
This study was designed to determine the changes in precision of the ultrasound parameters speed of sound (SOS), broadband
ultrasound attenuation (BUA), and stiffness index (SI) as a function of bone quality. The instrument used in this investigation
was the LUNAR Achilles. Of the 608 female patients who had paired measurements with repositioning, 200 had t scores ≥−1 and 408 had t scores ≤−2.5, thus rendering a normal and a grossly abnormal group for comparison of precision results. It was found that
the median precision error (CV%) for BUA was 1.99% for normal bone and 1.44% for abnormal bone (P= 0.02). No significant difference was obtained between median precision errors in normal and abnormal bone for the parameters
SOS and SI, which were 0.23% and 0.19%, and 2.15% and 2.02%, respectively. In the interquartile range, the mean precision
errors for SOS and BUA were significantly different in normal and abnormal bone: SOS was 0.25% and 0.21%, respectively, and
BUA was 2.31% and 1.85%, respectively. No significant change was registered for SI. Precision error appears to decrease slightly
at lower values for calcaneal variables.
Received: 21 August 1996 / Accepted: 5 March 1997 相似文献
6.
Ronald A. Bloom M.D. Eugene Libson M.D. Emeric Lax M.D. Hyman Pogrund M.D. 《Skeletal radiology》1986,15(6):455-457
The assimilated os sustentaculi is a projection of bone from the medial aspect of the sustentaculum tali which is surmounted by a similar projection from the medial tubercle of the talus. The accessory joint so formed may develop secondary osteoarthritis changes. This congenital anomaly is very rate. The present report is of 2 additional cases. 相似文献
7.
A model was developed which estimates the costs of osteoporosis risk evaluation and treatment, and the resulting savings in terms of reduced fracture frequency, for the adult female population of the United States. In the absence of treatment, the model predicts 1.44 million fractures will occur annually from non-violent causes. Treatment of all women beginning at age 50 with an agent that slows bone loss by 50% would reduce the number of these fractures by 0.59 million. Selective treatment of the 47% of women at the greatest fracture risk would reduce the number of fractures by 0.45 million, but would only cost 47% as much as treating all women. Additional data are required before the model can be used to evaluate specific treatment regimens. However, it appears that selective treatment of those at highest risk would yield the greatest benefit to cost ratio, if only benefits related to reduced fracture frequency are considered. 相似文献
8.
观察329块(男193,女136)国人成年跟骨的距关节面形态。其中A型出现率,男为45.08±3.58%,女为41.18±4.22%;B型出现率男为53.89±3.59%,女为58.82±4.22%;C型仅男性出现2例,占1.04±0.73%。成套标本中,距关节面左右对称的,男性90例中有81例,占90.00±3.16%;女性67例中有59例,占88.06±3.96%。经统计学处理,侧别间及性别间均无明显差异。文内结合观察结果提出自己的分型标准及类型,并与以往资料进行了比较。 相似文献
9.
Objective. Bone infarction (BI) of the calcaneus is an uncommon entity which has received little mention in the recent literature. In
this paper, we review the MR images of six calcanei with BI, which demonstrate a pattern of presentation that may explain
the etiology of BI at this unusual location. Design. A retrospective review was performed of the transcribed reports of the foot or ankle MR examinations at our institution.
MR images of examinations with any marrow signal abnormality were reviewed for presence of BI and its distribution. Patients. Based on MRI criteria, four patients had calcaneal BI (none biopsy proven); they ranged in age from 37 to 51 years old. Two
patients were diagnosed with systemic lupus erythematosus, one with fibrositis, and another with polymyositis. All were treated
with corticosteroids. Results. Six calcanei (in four patients) contained a region of calcaneal BI. In five of the six, the lesions were entirely or predominantly
located in the posterior half of the calcaneus. Conclusion. Two theories are proposed which may explain why BI predominantly occurs in the posterior half of the calcaneus. First, the
convergence of the recurrent intraosseous calcaneal vessels may occasionally produce the equivalent of a single dominant vessel
that is more prone to vascular accidents. Secondly, the region between the recurrent and the epiphyseal vessels may act as
a watershed zone, increasing its susceptibility to ischemia. 相似文献
10.
目的 探讨全关节镜下微创复位固定术治疗SandersⅡ、Ⅲ型跟骨关节内骨折的临床疗效。方法 前瞻性随机对照研究。纳入2017年3月—2020年12月徐州仁慈医院足踝外科Sanders Ⅱ、Ⅲ型跟骨骨折患者40例,其中男36例、女4例,年龄18~58(39.6±10.8)岁,左侧22例、右侧18例,Sanders Ⅱ型16例、Ⅲ型24例。40例患者数字表法随机分为关节镜组(采用关节镜下跟骨关节内骨折微创复位、经皮螺钉固定术治疗)、大“L”形切口组(采用传统的大“L”形切口跟骨骨折复位钢板内固定术治疗),每组20例。观察指标:(1)比较2组患者性别、年龄、体质量指数(BMI)、骨折类型、术前美国足踝外科学协会(AOFAS)踝-后足功能评分等基线资料差异;(2)比较2组患者手术切口长度、手术时间、术中出血量、住院时间、术后切口愈合情况等围术期资料差异;(3)术后观察局部有无麻木感、是否钢板外露、切口皮肤坏死、术后1年是否有创伤性关节炎等手术并发症情况;(4)对比分析2组患者末次随访时AOFAS踝-后足功能评分、Gissnae角和Bohler角。结果 (1)2组患者性别、年龄、BMI、骨折类型、术前AOFAS踝-后足功能评分等基线资料比较,差异均无统计学意义(P值均>0.05)。(2)关节镜组患者的切口长度(0.94±0.08)cm、术中出血量(7.20±1.98)mL、手术时间(41.45±9.96)min、住院时间(8.45±2.01)d,大“L”形切口组患者的切口长度(14.35±1.63)cm、术中出血量(27.35±10.35)mL、手术时间(90.65±12.08)min、住院时间(17.15±6.72)d,关节镜组优于大“L”形切口组,差异均有统计学意义(t=-36.70、-8.54、-14.04、-5.54,P值均<0.001)。(3)术后平均随访12.3个月。术后关节镜组切口均甲级愈合,无创伤性关节炎、足背皮肤麻木。大“L”形切口组20例中,18例患者切口甲级愈合,2例患者切口皮缘坏死、钢板外露,予腓肠神经营养逆行岛状皮瓣修复后伤口愈合;有4例患者术后感足背外侧麻木,经治疗分别于术后8~14个月痊愈。(4)末次随访时AOFAS踝-后足功能评分关节镜组为(92.10±3.16)分、大“L”形切口组为(91.3±2.45)分,术后2组患者跟骨的Gissnae角和Bohler角均在正常范围内,组间比较差异均无统计学意义(P值均>0.05)。结论 与传统的切开复位内固定术相比较,全关节镜下微创手术治疗Sanders Ⅱ、Ⅲ型跟骨关节内骨折,具有手术切口小、手术时间短、内固定牢固、切口愈合好、疗程短、术后瘢痕不明显、功能恢复快等优势。 相似文献