Mixed Reality Combined with Three‐Dimensional Printing Technology in Total Hip Arthroplasty: An Updated Review with a Preliminary Case Presentation

Three‐dimensional (3D) printing technology, virtual reality, and augmented reality technology have been used to help surgeons to complete complex total hip arthroplasty, while their respective shortcomings limit their further application. With the development of technology, mixed reality (MR) technology has been applied to improve the success rate of complicated hip arthroplasty because of its unique advantages. We presented a case of a 59‐year‐old man with an intertrochanteric fracture in the left femur, who had received a prior left hip fusion. After admission to our hospital, a left total hip arthroplasty was performed on the patient using a combination of MR technology and 3D printing technology. Before surgery, 3D reconstruction of a certain bony landmark exposed in the surgical area was first performed. Then a veneer part was designed according to the bony landmark and connected to a reference registration landmark outside the body through a connecting rod. After that, the series of parts were made into a holistic reference registration instrument using 3D printing technology, and the patient's data for bone and surrounding tissue, along with digital 3D information of the reference registration instrument, were imported into the head‐mounted display (HMD). During the operation, the disinfected reference registration instrument was installed on the selected bony landmark, and then the automatic real‐time registration was realized by HMD through recognizing the registration landmark on the reference registration instrument, whereby the patient's virtual bone and other anatomical structures were quickly and accurately superimposed on the real body of the patient. To the best of our knowledge, this is the first report to use MR combined with 3D printing technology in total hip arthroplasty.     

新型冠状病毒肺炎中医认识初探

新型冠状病毒肺炎中医属"寒湿疫"范畴,以湿邪为病机核心,以肺为病位中心,以脾胃盛衰为疾病进退的关键。治疗与预防调护方面,急性期,卫气同调,宜宣清和化;恢复期,肺脾同治,宜清补轻宣,注重饮食、情志调摄;谨慎使用抗病毒、抗生素、激素及液体疗法。     

顶天立地服务需求 注重内涵创建一流——首都医科大学建校60周年教育教学与人才培养成果回顾

首都医科大学通过60年辛勤耕耘、精益求精，秉承“顶天立地”的人才培养理念，为社会培养了大批高水平的学术型与应用型医药卫生人才。回顾学校60年来本专科教育、全科医学教育、国际教育、研究生教育的人才培养成果，以总结经验并鼓舞全体首医人进一步求真务实、凝心聚力、积极进取、追求卓越，努力将学校建设成为国际一流的研究型医科大学。     

肝门部胆管癌的分型分期系统及其临床应用价值

肝门部胆管癌（hilar cholangiocarcinoma，HC）分型和分期系统较为庞杂，包括改良Bismuth-Corlette分型，Gazzaniga T分期，Blumgart T分期，美国纪念Sloan-Kattering癌症中心（Memorial Sloan Katering Cancer Center，MSKCC）T分期，Mayo分期系统，美国癌症联合委员会（American Joint Committee on Cancer，AJCC）和国际抗癌联盟（International Union Against Cancer，UICC）联合发布的TNM分期，欧洲肝胆胰协会分期（Consensus classification from the European Hepato-Pancreato-Biliary Association，EHPBA），以及日本肝胆胰外科学会（Japanese Society of Hepato-Biliary-Pancreatic Surgery，JSHBPS）分期，各分期系统所包含的内容差异较大，各具特色和优缺点，本文就HC常见的分型和分期系统及其在临床中的应用价值做一综述。     

层面递进法激光腔内剜除高危前列腺增生的治疗体会

目的探讨1 470 nm激光剜除治疗高危前列腺增生的手术技巧及临床效果。 方法回顾分析2018年6月至2018年9月中山大学附属第三医院泌尿外科采用1 470 nm激光治疗共89例高危前列腺增生患者的临床资料，年龄平均（68±3）岁，前列腺体积（57.4±2.6）ml。所有患者均采用"寻找层面，先易后难，剜切结合"的层面递进法思路行激光腔内前列腺剜除术，比较患者术中及术后情况。 结果89例均顺利完成手术，与术前相比，术后3个月患者最大尿流率明显增加，[（6.9±2.1） ml/s vs（19.8±3.6） ml/s]。国际前列腺症状评分显著好转，[（24.6±1.7） vs（8.0±1.2）]。术中无输血、无电切综合征、无直肠和膀胱穿孔病例，无输尿管损伤、大出血、心脑血管意外等严重并发症发生。 结论层面递进法激光剜除技术构想对于高危前列腺增生外科包膜层面的寻找、减少术后并发症有独到优势，且易于掌握，或可为业界同行提供一个新的思路。