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简介：AbstractBackground:Synovectomy has been introduced into total knee arthroplasty (TKA) with the aim of relieving pain and inflammation of the synovium. However, there are no long-term, comparative data to evaluate the effect of synovectomy in TKA. This study was aimed at assessing pain, function, and complications in patients undergoing synovectomy during TKA for osteoarthritis (OA) at long-term follow-up.Methods:This was a prospective randomized controlled trial of 42 consecutive patients who underwent staged bilateral TKA. Patients undergoing the first-side TKA were allocated to receive TKA with or without synovectomy followed by a 3-month washout period and crossover to the other strategy for the opposite-side TKA. The overall efficacy of both strategies was evaluated by determination of blood loss, the Knee Society score (KSS), and knee inflammation conditions during a 3-month postoperative period. The postoperative pain, range of motion (ROM), and complications were sequentially evaluated to compare the two groups until 10 years after surgery.Results:At the 10-year follow-up, both groups had a similarly significantly improved ROM (114.88 ± 9.84° vs. 114.02 ± 9.43°, t = 0.221, P = 0.815) and pain relief with no differences between the two groups (1.0 [1.0] vs. 1.0 [1.5], U = 789.500, P = 0.613). Similar changes in total blood loss, KSS, and knee inflammation were found in both groups during 3 months postoperatively (P > 0.05). Additionally, there was no significant difference regarding complications and satisfaction between the two groups (P > 0.05).Conclusions:Synovectomy in conjunction with TKA for primary OA does not seem to provide any benefit regarding postoperative pain, ROM, and satisfaction during a 10-year follow-up. In addition, it may not result in more blood loss and increased incidence of long-term complications. Based on our long-term findings, it should not be performed routinely.Trial registration:Chinese Clinical Trial Registry, ChiCTR-INR-16008245; https://www.chictr.org.cn/showproj.aspx?proj= 13334.

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简介：【摘要】：某工业（集团）有限公司670号机棚项目采用双曲线倒三角管桁架结构，轴线尺寸为138m×51m，跨度69m，安装高度为15m，弧形最高点为21.5m，弧形高度为6.5m，考虑到桁架拼装及吊装思路及方案的选择，本文阐述了地面拼装法及空中吊装法等施工关键技术，结合数值模拟结果，指导现场施工，最终施工效率比常规施工提升一倍，质量优，经济效益好，安全环保性高。

简介：摘要：共青团作为党的后备军，承担着组织联系青年、培养青年、发现人才、储备人才的重要使命。针对目前企业对共青团建设重视程度不高、职能弱化的现状，各企业要结合行业特色，充分发挥党组织的政治优势、组织优势和思想引领优势，激发青年立足岗位的创新创效动力，引领青年团队积极探索、促进青年成才、行业管理规范化、推动提升行业文明程度。葛洲坝集团四川内遂高速公路有限公司目前是高速公路工程项目运营单位，在以“党建带团建”的实践探索中，历经公司多年的发展创新，总结归纳出了一套行之有效的管理办法，探索出了一条可持续发展的模式。