全髋关节置换术治疗先天性髋关节脱位的研究进展

0引言 先天性髋关节脱位(congenital dislocation of the hip,CDH)是儿童时期原因不明的先天性髋关节疾病,其发病率在欧美约1‰,国内约为0.5‰～2‰.而成人先天性髋关节脱位或髋臼发育不良多为儿童时期诊断遗漏、延误治疗或治疗不当,或儿童时期髋关节其他疾病如:Legg-Carlve-Perthes病、股骨头骨骺滑脱等的自然转归而发展所致.至成年阶段,其病理改变及临床表现多已相当严重.随着人工全髋关节的材料、工艺、假体设计及手术技术的日益完善和成熟,人工全髋关节置换术(total hip arthroplasty,THA)已成为其重要的治疗选择之一,现其研究进展做一综述.     

Comparison of cortical bone thickness and root proximity at maxillary and mandibular interradicular sites for orthodontic mini‐implant placement

Authors – Lim JE, Lee SJ, Kim YJ, Lim WH, Chun YS Objectives – To compare maxillary and mandibular cortical bone thickness and rootic proximity for optimal mini‐implant placement. Setting and Sample Population – CT images from 14 men and 14 women were used to evaluate buccal interradicular cortical bone thickness and root proximity from mesial of the central incisor to the 2nd molar. Cortical bone thickness was measured at 0°, 15°, 30°, and 45° angles relative to the root surface using three‐dimensional images. Results – For the cortical bone thickness, there was no statistically significant difference between the maxilla and the mandible in the anterior area; however, there was a significant difference in the posterior area. Cortical bone in the maxilla, mesial and distal to canine interradicular sites, was thickest while thickness in the mandible exhibited a gradual anterior to posterior increase. Cortical bone thickness in the maxilla increased as both level and angle increased, while the cortical bone thickness in the mandible was greatest at 4 mm from the alveolar crest. Root proximity mesial and distal to 2nd premolar interradicular sites was greatest. Conclusion – Based on our results, cortical bone thickness depends on the interradicular site rather than sex or individual differences.     

术前肌电图和脑干听觉诱发电位与面肌痉挛微血管减压术后迟发性面瘫发生的关系(英文)

Background Delayed facial palsy ( DFP) after microvascular decompression ( MVD) in patients with hemifacial spasm ( HFS) is not uncommon,but the cause remains unknown. Objectives To assess whether intraoperative electromyography ( EMG) and brainstem auditory evoked potential ( BAEP) can predict DFP after MVD. Methods Between September 2009 and February 2011 we examined 86 patients,9 of whom ( 10. 4% ) developed DFP after MVD on the same side. All patients underwent MVD and were followed - up for a median period of 13 months ( range 6-22) . We retrospectively examined intraoperative facial EMG and BAEP findings using our MVD patients’ registry. We excluded secondary HFS and immediate postoperative facial palsy after MVD in this study. We assessed the prevalence and clinical characteristics of DFP and compared EMG and BAEP findings between DFP and non-DFP groups. Results: All pa- tients recovered completely,with a mean time to recovery of 37. 8 days ( range 22-57) . There were no significant differences between DFP and non - DFP patients in terms of the amplitude and latency of intraoperative EMG and BAEP. Conclusion The usefulness of intraoperative facial EMG and BAEP is limited and cannot predict DFP after MVD for HFS. We speculate that DFP after MVD is not associated with permanent nerve damage according to the EMG findings.     

乌拉尔甘草中新香豆素的化学研究

甘草是一味重要的传统中药,为临床广泛使用。多年来国内外学者对其化学成分的研究颇为重视。近来,用不同溶剂对甘草进行分步提取,以酶和受体生物学指标进行监测,发现乌拉尔甘草(Glycyrrhiza uralensis Fisch)的二氯甲烷提取物对安定受体,胆囊收缩素受体以及二氢还原酶具有明显的抑制作用。为了寻找其中的有效成分,我们对该部分进行了化     

Orbital lymphomas and pseudolymphomas: treatment with radiation therapy

A retrospective analysis of 16 patients with orbital lymphoma or pseudolymphoma from 1961-1984 was undertaken to evaluate the use of radiation therapy. Pathologic assessment confirmed that four patients had benign pseudolymphoma, and 12 patients had true malignant lymphoma, including two with advanced disease at presentation. With a median follow-up of 4 years, the local control rate with radiation therapy was 100%, although the two patients with advanced disease died of lymphoma 26-33 months after irradiation. While doses of 1,600-2,000 cGy appear adequate for pseudolymphoma, for lymphoma a dose of 3,000-4,000 cGy is necessary. Subconjunctival lesions can be treated in a single anteroposterior field; retroorbital lesions require an additional lateral field.     

吡啶及其衍生物的流动注射荧光分析

本文利用吡啶及其衍生物与过氧化氢的加热反应,建立了流动注射荧光分析法。吡啶及其衍生物在5～100ng范围内具有良好的线性关系(r=0.999).异烟肼、乙酰异烟肼和异烟酸在进样25ng时的相对标准偏差(n=10)平均为1.2%。异烟肼、乙酰异烟肼的检出限(S/N=3)为0.5ng,异烟酸的检出限为0.25ng.分析速度为30样/h。     

石椒草内酯成分的研究

从芸香科松风草属植物石椒草(Boennighausenia sessilicarpa Levl)全草的乙醚提取部分分离出两个内酯化合物,经理化常数和光谱分析确定为石椒草内酯A(shijiaocaolactone A,I),芸香内酯(rutamarin,Ⅱ),其中石椒草内酯A为未见报道的新化合物。