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   752篇
  免费   28篇
  国内免费   42篇
耳鼻咽喉   1篇
妇产科学   1篇
基础医学   38篇
临床医学   91篇
内科学   220篇
皮肤病学   2篇
神经病学   8篇
特种医学   56篇
外科学   166篇
综合类   102篇
预防医学   22篇
眼科学   1篇
药学   44篇
中国医学   58篇
肿瘤学   12篇
  2024年   1篇
  2023年   7篇
  2022年   17篇
  2021年   21篇
  2020年   26篇
  2019年   14篇
  2018年   26篇
  2017年   26篇
  2016年   23篇
  2015年   29篇
  2014年   58篇
  2013年   43篇
  2012年   49篇
  2011年   42篇
  2010年   49篇
  2009年   33篇
  2008年   52篇
  2007年   35篇
  2006年   37篇
  2005年   24篇
  2004年   31篇
  2003年   20篇
  2002年   24篇
  2001年   13篇
  2000年   19篇
  1999年   9篇
  1998年   7篇
  1997年   7篇
  1996年   9篇
  1995年   12篇
  1994年   6篇
  1993年   4篇
  1992年   8篇
  1991年   3篇
  1990年   1篇
  1989年   5篇
  1988年   3篇
  1987年   9篇
  1986年   3篇
  1985年   6篇
  1984年   4篇
  1983年   1篇
  1982年   1篇
  1981年   1篇
  1980年   1篇
  1979年   1篇
  1976年   1篇
  1975年   1篇
排序方式: 共有822条查询结果,搜索用时 15 毫秒
41.
布氏杆菌感染致脊柱炎的MR表现   总被引:2,自引:0,他引:2  
目的:探讨布氏杆菌感染引起的脊柱炎的MR表现,旨在提高对该病的诊断水平.方法:本组13例均行MR检查和血清凝聚试验.结果:病灶多分布在腰椎,以L4发病率最高,受累椎体多伴有明显骨质增生,类似脊柱结核.结论:布氏杆菌感染引起的脊柱炎具有特征性MR表现,鉴别诊断应包括脊柱结核、强直性脊柱炎和化脓性脊柱炎.  相似文献   
42.
Sacroiliac joint malposition is one of the main causes evoking lumbocrural pain. Because its clinical symptoms are similar to those induced either by lumbar intervertebral disc protrusion or by ankylosing spondylitis (AS) at the early stage, and because X-ray results taken at its early stage were not evident for differentiating the diseases, misdiagnosis may occur in some doctors due to lack of experience. The authors treated several cases of pain in hip joint, which had been diagnosed as ankylosing spondylitis.  相似文献   
43.
祛痹通络胶囊治疗强直性脊柱炎60例临床观察   总被引:1,自引:0,他引:1  
目的:观察祛痹通络胶囊治疗强直性脊柱炎(AS)的临床疗效。方法:选择60例符合AS诊断标准和纳入标准的男性患者为研究对象,采用随机化原则进行分组,分为治疗组和对照组。治疗组采用祛痹通络胶囊配合扶他林片进行治疗,对照组采用扶他林片进行治疗。结果:治疗组与对照组治疗后脊柱活动度相关指标方面均有改善,且治疗组优于对照组(P〈0.05)。结论:祛痹通络胶囊对强直性脊柱炎具有良好的治疗效果。  相似文献   
44.
Wang D  Lu H  Zhang B  Chen Z  Jiang D  Ai J 《中华外科杂志》2002,40(3):216-218
目的 通过建立强直性脊柱炎HLA-B2704和hβ2m双转基因动物模型,证实HLA-B2704和hβ2m基因在双转基因小鼠自发性炎性疾病发病过程中的作用,为研究B27相关性疾病的病因学、预防和治疗提供有力的工具。方法 将HLA-B2704和hβ2m转基因阳性小鼠交配后出生的子代,应用PCR、斑点杂交、Southern杂交、RT-PCR、流式细胞术和免疫组织化学等方法进行筛选鉴定和表达检测。同时隔日观察小鼠的发病情况,发病鼠行HE染色观察病理变化。结果 有8只高拷贝双转基因小鼠2周左右出现皮肤病变,关节炎和趾甲变化等自发性炎性疾病表现,正常小鼠、B27单转基因小鼠和HLA-B27/hβ2m双转基因小鼠流式细胞计的检测结果分别为0.63%、7.87%、35.87%,双转基因小鼠的细胞膜表面可见HLA-B2704高表达,而在B27单转基因小鼠表达不明显。结论 HLA-B2704重链可诱发转基因小鼠发生自发性炎性疾病,hβ2m可与B27形成稳定的复合体,从而稳定和增强HLA-B2704在细胞膜表面的表达。  相似文献   
45.
目的:观察电针结合推拿治疗肥大性脊椎炎的疗效。方法:将118例病人随机分为3组,分别是电针配合推拿组、电针组、推拿组,并进行比较。结果:电针结合推拿组和电针组、推拿组相比有显著性差异(P〈0.05)。结论:电针结合推拿治疗肥大性脊椎炎疗效显著。  相似文献   
46.
目的:研究强直性脊柱炎湿热血瘀证的辨证要素,探讨证候的研究方法。方法:把中医辨证理论方法与流行病学调研方法、多元统计分析方法有机地结合,选取就诊的强直性脊柱炎患者进行调查研究并对资料进行统计学处理。结果:聚类分析发现,强直性脊柱炎的主要症状为:腰脊活动受限、晨僵、腰骶疼痛、脊背疼痛。Logistic分析得出湿热血瘀证候诊断的主要症状,对证候的归属进行判断,以预测概率0.5为判别分界点,总正确率为88.10.4。判别式分析得出对湿热血瘀证诊断有帮助的症状,并建立判断函数,符合率为89.2%,灵敏度为77.3%,特异度为92.7%,Kappa值为0.695。结论:应用临床流行病学的调查方法并结合统计学分析进行证候研究,包括中医辨病和辨证要素的研究是可行的。  相似文献   
47.
强直性脊柱炎非骨水泥型全髋关节置换术后中期随访   总被引:3,自引:2,他引:1  
目的:观察强直性脊柱炎非骨水泥型全髋关节置换术后中期的随访结果。方法:对37例(52髋)强直性脊柱炎非骨水泥型全髋关节置换术后患者进行了24~172个月,平均69个月的随访。临床随访根据Harris的评分方法进行评分,X线随访根据Gruen等和DeLee and Charnley分区法分别进行股骨柄和臼杯X线分析,根据Brooker等0~4级分级法进行异位骨化分级。结果:患者髋关节屈伸、收展、内外旋总活动度由术前的平均27°提高到术后平均152°。术后无脱位、感染等并发症发生。Harris评分术前平均为32(8~64)分,术后平均为82(64~96)分,其中优38髋,良8髋,可6髋,优良率88.5%。X线片分析未见假体松动,11髋(21.2%)发生异位骨化。结论:人工全髋关节置换术治疗强直性脊柱炎髋关节病变,中期可取得满意的临床效果。  相似文献   
48.
Pain and fatigue in patients with rheumatic disorders   总被引:1,自引:0,他引:1  
Summary The purpose of the study was to investigate whether fibromyalgia patients (n=50) differed from patients with rheumatoid arthritis (n=22) and ankylosing spondylitis (n=31) with respect to pain experience, pain coping and fatigue. A high general pain intensity level was recorded by the McGill Pain Questionnaire (p<0.01) and the visual analogue scale (p<0.01) in the fibromyalgia group compared to the other groups. The pain was of continuous duration in the fibromyalgia patients while the rheumatoid arthritis and ankylosing spondylitis patients experienced intermittent pain. A high correlation between sensory and affective pain rating indexes was determined in all patient groups (p<0.01). No statistically significant difference between the groups in pain coping was recorded. A high frequency of reported gastrointestinal problems (p<0.01) and high intensity of fatigue (p<0.01) were seen in the fibromyalgia group compared to the other groups. In the fibromyalgia group there was no correlation between the sleep problems and fatigue intensity. Thus, the fibromyalgia patients differed from the other groups in reporting frequently shoulder and upper arm pain, continuous pain, higher levels of fatigue and pain intensities as well as high frequency of gastrointestinal problems.  相似文献   
49.
A case of an isolated lesion of the thoracic spine attributed to SAPHO syndrome is presented. A 51-year-old man was referred for inflammatory pain in the thoracic spine. The general examination was normal (especially cutaneous and rheumatologic examinations). Laboratory analysis showed only a mild inflammatory reaction. Standard radiographs showed partial condensation of T8. Computed tomography showed osteolysis of the anterior corner of T8, and MRI revealed an abnormal signal of T8, with enlargement of the prevertebral soft tissue. Percutaneous and thoracoscopic biopsies showed a nonspecific inflammatory process, and cultures were sterile. Initially, several diagnoses were advanced: infectious spondylitis, malignant tumor, lymphomas, Paget disease, seronegative spondyloarthropathies and finally atypical SAPHO syndrome. Three months later, the patient experienced more pain. General examination was still normal. The radiological findings worsened, while the inflammatory blood tests were normal. A new thoracoscopic biopsy revealed a nonspecific inflammatory process. A diagnosis of SAPHO syndrome was made, despite the lack of typical lesions. Dramatically improving with anti-inflammatory therapy, the patients condition was favorable at 3-year follow-up. This atypical presentation of an isolated lesion in the spine makes the diagnosis of a SAPHO syndrome difficult but possible. Spine surgeons must be aware of this rare entity, to avoid misdiagnosis and unnecessary repeated surgical biopsies.  相似文献   
50.
The recommended surgical options for postoperative wound infections after instrumented spine surgery include a wide debridement and irrigation with antibiotics. In most cases, implant removal is not recommended for a solid fusion. However, there are few reports on the treatment choices for persistent postoperative wound infections following a posterior lumbar interbody fusion (PLIF) using cages. This paper reviewed ten patients referred to our department, who underwent revision surgery for a postoperative, deep infection after a PLIF with cages. The surgery included an anterior radical debridement and interbody fusion with removal of all implants. The clinical and laboratory results, including a bacteriologic study for the causative organism and the radiological changes, were analyzed. All patients complained of persistent severe back pain after the primary surgery. MRSA was the main organism found in these patients (five cases). Complete bony fusion was obtained in nine patients (90%). In one patient, back pain and radiating pain prevented him from returning to his original work. Despite the anterior interbody fusion with an autogenous iliac bone graft, all cases had a complete collapse of the intervertebral disc space, without a dislodgement or collapse of the graft bone. The mean loss of the height and lordosis in the involved segment was 12.7 mm (range 4–46 mm) and 5.6° (range 0–15°), respectively. Anterior radical debridement with the removal of all implants would be an effective way to manage patients with postoperative spondylitis after a PLIF using cages.  相似文献   
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