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Acetabular cup size trends in total hip arthroplasty

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World Journal of Orthopedics 2024年第1期15卷 39-44页

作者： Daniel Patrick McKenna Alex Price Timothy McAleese Darren Dahly Paul McKenna May Cleary Department of Trauma and Orthopaedics University Hospital WaterfordWaterford X91 ER8EIreland Department of Epidemiology and Public Health University College CorkCork T12 XF62Ireland

BACKGROUND Total hip arthroplasty(THA)is a common procedure for end stage osteoarthritis.The learning curve for THA is complex and challenging.One of the most difficult skills to master is acetabular reaming.We wish to identify if experience in arthroplasty leads to preservation of more bone stock.AIM To investigate if increasing surgeon experience will predict an ever decreasing acetabular cup size.METHODS A retrospective case series of four attending orthopaedic surgeons was completed.All uncemented elective total hip arthroplasties since appointment were selected for inclusion.The size of acetabular cup used was noted and logistic regression was used to identify if a trend to smaller cups existed.RESULTS A total of 1614 subjects were included with a mean age of 64 years.Overall cups were on average 0.18mm smaller per year(95%confidence interval-0.25 to-0.11,P<0.001).Individual surgeon trends showed cup sizes to decrease 0.27 mm/year for surgeon A,0.02 mm/year for surgeon B,0.15 mm/year for surgeon C and 0.29 mm/year for surgeon D.Three of the four surgeons had a more pronounced trend to smaller cups for male subjects than their female counterparts.CONCLUSION We found increasing surgeon experience to be associated with an ever-decreasing acetabular cup size.Smaller acetabular cup size may act as a surrogate marker of surgical proficiency by virtue of decreased acetabular reaming.

关键词： hip Arthroplasty Acetabulum Cup Learning

Surgical Treatment of Osteonecrosis of the Femoral Head Using Minimally Invasive Surgical Drilling and Cancellous Grafting at Brazzaville University Hospital

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Open Journal of Orthopedics 2024年第2期14卷 122-132页

作者： Kevin Parfait Bienvenu Bouhelo-Pam Marius Monka Arnauld Sledje Wilfrid Bilongo Bouyou Regis Perry Massouama Paul Yèlai Ikounga Roger Bertrand Sah Mbou Armand Moyikoua Department of Orthopaedic surgery and Traumatology University Hospital of Brazzaville Brazzaville Republic of the Congo Faculty of Health Sciences Marien N’GOUABI University Brazzaville Republic of the Congo

Introduction: Osteonecrosis of the femoral head (ONTF) is a debilitating condition. Several treatments have been proposed with controversial results. The aim of our study was to evaluate treatment by surgical drilling coupled with in situ cancellous grafting. Materials and methods: Our study was a case-control study conducted at Brazzaville University Hospital from 1st January 2018 to 31 December 2023. It compared two groups of patients with ONTF: non-operated (13 patients, 20 hips) and operated (22 patients, 35 hips). We used the visual digital scale (VDS) for pain assessment, the Merle D’Aubigne-Postel (MDP) scoring system for clinical and functional assessment, and the evolution of necrosis. Results: The group of non-operated patients had a mean age of 35.69 ± 3.4 years, no improvement in pain with an EVN above seven at the last recoil and a mean global MDP score falling from 12.7 before offloading to 10.13 at one year. The group of patients operated on had a mean age of 37.86 ± 7.02 years, a significant reduction in pain (p = 0.00004) and a significantly increased MDP score (p = 0.0034). A comparison of the two groups of patients showed significant stabilization of the necrotic lesions in the operated patients (p = 0.00067), with better satisfaction in the same group. Conclusion: Surgical drilling combined with grafting in the treatment of early-stage ONTF has improved progress in our series. The technique is reproducible and less invasive. It has made it possible to delay unfavorable progression and, consequently, hip replacement surgery.

关键词： hip Osteonecrosis of the Femoral Head Conservative Treatment Surgical Drilling Bone Grafting

基于国产DCU异构平台的图匹配算法移植与优化

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计算机科学 2024年第4期51卷 67-77页

作者：郝萌田雪洋鲁刚钊刘义张伟哲何慧哈尔滨工业大学计算学部哈尔滨150001 中国电子科技南湖研究院浙江嘉兴314001 中国科学院大学计算机科学与技术学院北京100049

子图匹配是一种基础的图算法,被广泛应用于社交网络、图神经网络等众多领域。随着图数据规模的增长,人们迫切需要高效的子图匹配算法。GENEVA是一种基于GPU的并行子图匹配算法,其利用区间索引的图存储结构和并行匹配优化方法,能够大幅... 详细信息

子图匹配是一种基础的图算法,被广泛应用于社交网络、图神经网络等众多领域。随着图数据规模的增长,人们迫切需要高效的子图匹配算法。GENEVA是一种基于GPU的并行子图匹配算法,其利用区间索引的图存储结构和并行匹配优化方法,能够大幅度减少存储开销,提升子图匹配性能。但由于平台底层硬件架构和编译环境的不同,GENEVA无法直接应用到国产DCU异构平台。为了解决该问题,提出了GENEVA面向国产DCU的移植和优化方案。IO时间开销是GENEVA算法主要的性能瓶颈,文中采用锁页内存、预加载、调度器3种优化策略来突破该瓶颈。其中,锁页内存技术避免了从可分页内存到临时锁页内存的额外数据传输,在DCU平台上大幅度减少了IO传输的时间开销;预加载技术将IO数据传输与DCU核函数计算重叠,掩盖了IO时间开销;调度器在满足预加载需求的同时,减少了冗余数据的传输。在3个不同规模的真实数据集上进行实验,结果表明,采用优化策略后算法性能显著提高。在92.6%的测试用例上,经过优化的GENEVA-hip算法在国产DCU平台的执行时间比移植前的GENEVA算法在GPU服务器的执行时间短。在较大规模的数据集上,优化的GENEVA-hip算法在DCU平台上的执行时间相比移植前的GENEVA算法在GPU服务器的执行时间减少了52.73%。

关键词：子图匹配 DCU 异构平台 hip 移植和优化

Technical note for intraoperative determination of proper acetabular cup size in primary total hip arthroplasty

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World Journal of Methodology 2024年第1期14卷 94-101页

作者： Panagiotis Karampinas John Vlamis Athanasios Galanis Michail Vavourakis Anastasia Krexi Evangelos Sakellariou Christos Patilas Spiros Pneumaticos 3^(rd)Department of Orthopaedic Surgery National&Kapodistrian University of AthensKAT General HospitalAthens 14561Greece

BACKGROUND Selecting the optimal size of components is crucial when performing a primary total hip arthroplasty.Implanting the accurate size of the acetabular component can occasionally be exacting,chiefly for surgeons with little experience,whilst the complications of imprecise acetabular sizing or over-reaming can be potentially devastating.AIM To assist clinicians intraoperatively with a simple and repeatable tip in elucidating the ambivalence when determining the proper acetabular component size is not straightforwardly achieved,specifically when surgeons are inexperienced or preoperative templating is unavailable.METHODS This method was employed in 263 operations in our department from June 2021 to December 2022.All operations were performed by the same team of joint reconstruction surgeons,employing a typical posterior hip approach technique.The types of acetabular shells implanted were:The Dynasty®acetabular cup system(MicroPort Orthopedics,Shanghai,China)and the R3®acetabular system(Smith&Nephew,Watford,United Kingdom),which both feature cementless press-fit design.RESULTS The mean value of all cases was calculated and collated with each other.We distinguished as oversized an implanted acetabular shell when its size was>2 mm larger than the size of the acetabular size indicator reamer(ASIR)or when the implanted shell was larger than 4 mm compared to the preoperative planned cup.The median size of the implanted acetabular shell was 52(48–54)mm,while the median size of the preoperatively planned cup was 50(48–56)mm,and the median size of the ASIR was 52(50–54)mm.The correlation coefficient between ASIR size and implanted acetabular component size exhibited a high positive correlation with r=0.719(P<0.001).Contrariwise,intraoperative ASIR measurements precisely predicted the implanted cups’size or differed by only one size(2 mm)in 245 cases.CONCLUSION In our study,we demonstrated that the size of the first acetabular reamer not entering freely in the acetabular rim corroborates the final acetabular component

关键词： Acetabular shell Total hip arthroplasty hip Acetabulum Acetabular component Primary hip arthroplasty

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人类免疫组计划将启动 001

人类免疫组计划将启动

Cervical spondylotic myelopathy with syringomyelia presenting as hip Charcot neuroarthropathy:A case report and review of literature

中国科学报

作者：文乐乐

本报讯一项雄心勃勃的“人类免疫组计划”（hip）将于今年初启动，收集来自世界各地的成千上万志愿者的数据。据《科学》报道，hip得到了一个由公司、政府机构和大学组成的国际联盟的支持，将探测血液和组织样本中数千种免疫变量，有... 详细信息

本报讯一项雄心勃勃的“人类免疫组计划”（hip）将于今年初启动，收集来自世界各地的成千上万志愿者的数据。据《科学》报道，hip得到了一个由公司、政府机构和大学组成的国际联盟的支持，将探测血液和组织样本中数千种免疫变量，有望建立全球最大、最全面的免疫学数据库。利

关键词：免疫学家 hip

来源： cnki报纸评论

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World Journal of Clinical Cases 2022年第3期10卷 1077-1085页

作者： Yu Lu Jun-Yi Xiang Cheng-Yu Shi Ju-Bao Li Hai-Chao Gu Chang Liu Guo-Yu Ye Department of Orthopedics Yunnan Provincial Hospital of Traditional Chinese MedicineKunming 650000Yunnan ProvinceChina Department of Management and Economics Kunming University of Science and TechnologyKunming 650000Yunnan ProvinceChina Department of Sleep Center The First People's Hospital of Yunnan ProvinceKunming 650000Yunnan ProvinceChina

BACKGROUND Charcot neuroarthropathy(CN)is a systemic disease characterized by progressive bone loss and destruction,which is usually closely related to diabetes,HIV,etc.However,CN caused by syringomyelia accounts for only 5%of CN cases;the shoulder and elbow are most often involved,and the hip joint is rarely affected.As a rare factor,cervical spondylotic myelopathy(CSM)can be associated with syringomyelia,which is scarcely reported in the literature.Here,we present the first case report to date of CN of the hip caused by syringomyelia secondary to CSM.CASE SUMMARY We describe a 76-year-old male patient who was diagnosed with CSM due to neck pain and weakness of limbs 16 years ago.Four years ago,he noticed recurrent swelling of the right hip with pain and was diagnosed with degenerative arthritis.Recently,however,his symptoms gradually worsened,and because of progressive pain,destabilization and weakness of the right hip,he was admitted to our hospital.Through systematic physical,radiographic and laboratory examinations,we finally reached a diagnosis:CN of the right hip associated with syringomyelia secondary to CSM.After comprehensive evaluation of the patient's condition,we performed right total hip arthroplasty.During the follow-up,the patient felt well clinically and could walk independently with a knee brace.CONCLUSION We suggest a possible etiological association between CSM and syringomyelia,which may reflect a potential pathogenesis of CN.We encourage clinicians to actively carry out a detailed medical history and comprehensive physical and imaging examinations in patients with joint lesions,especially chronic shoulder neck pain,to rule out the possibility of this association,which plays a crucial role in the early diagnosis of CN.Arthroplasty may no longer be an absolute contraindication to surgical treatment of CN.Reasonable selection of the surgical strategy can markedly improve the clinical symptoms and quality of life of patients.

关键词： Cervical spondylotic myelopathy Syringomyelia hip Charcot neuroarthropathy Case report

Robotic arm-assisted arthroplasty:The latest developments

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Chinese Journal of Traumatology 2022年第3期25卷 125-131页

作者： Xin Chen Shu Deng Mao-Lin Sun Rui He Center for Joint Surgery Southwest HospitalThird Military Medical University(Army Medical University)Chongqing400038China

Joint arthroplasty is an effective method for treating end-stage joint lesions and damages.Robotic arm-assisted arthroplasty,a rapidly developing technology that combines navigation technology,minimally invasive technology,and precise control technology of the robotic arm,can achieve accurate preoperative planning,optimal selection of implants,minimally invasive surgery,precise osteotomy,and accurate placement of the artificial joint.It has the characteristics of high accuracy and stability,and thus is more and more widely used in the field of joint surgery.In this paper,we systematically reviewed the application and clinical efficacy of robotic arm-assisted technology in hip and knee arthroplasty to provide reference for its future promotion.

关键词： Robotic arm Arthroplasty hip Knee Clinical efficacy

Mixed bacterial-fungal infection following total hip arthroplasty: A case report

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Chinese Journal of Traumatology 2022年第1期25卷 32-36页

作者： Yang-Jing Lin Tiao Su Liu Yang Guang-Xing Chen Department of Joint Surgery Southwest HospitalArmy Medical UniversityChongqing 400038China

Prosthetic infection is one of the severe postoperative complications of arthroplasty.Mixed bacterial-fungal prosthetic infection is rare but can be disastrous.This case was a 76-year-old female suffered from prosthetic infection following total hip replacement due to femoral neck fracture and underwent multiple debridements.The culture of periprosthetic tissue was bacteriologically sterile following the first debridement,while the Staphylococcus hominis was identified in the second debridement in the previous hospitalization where fungal infection had not been considered.Thus the pathogen spectrum of anti-infection therapy failed to contain fungus.Ultimately,the culture result of our sampled periprosthetic tissue during the third debridement was Candida albicans without bacterium in our hospital.The fungal prosthetic infection was successfully treated by a two-stage revision with antifungal drugs.Accurate diagnosis and standardized treatment is the key to the therapy of infection after hip arthroplasty,especially for mixed bacterial-fungal prosthetic infection.

关键词： Staphylococcus hominis Prosthesis-related infections Arthroplasty hip

Prosthetic joint infection of the hip and knee due to Mycobacterium species:A systematic review

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World Journal of Orthopedics 2022年第5期13卷 503-514页

作者： Asep Santoso Krisna Yuarno Phatama Sholahuddin Rhatomy Nicolaas Cyrillus Budhiparama Department of Orthopaedic and Traumatology Universitas Sebelas MaretSurakarta and Prof.Dr.R.Soeharso Orthopaedic HospitalSukoharjo 57162Indonesia Department of Orthopaedic and Traumatology Universitas BrawijayaSaiful Anwar General HospitalMalang 65112Indonesia Department of Orthopaedic and Traumatology Universitas Gadjah MadaYogyakarta and Dr.Soeradji Tirtonegoro General HospitalKlaten 57424Indonesia Nicolaas Institute of Constructive Orthopaedic Research and Education Foundation at Medistra Hospital Jakarta 12950Indonesia Faculty of Medicine Universitas AirlanggaJawa Timur 60132Indonesia Department of Orthopaedics Leiden University Medical CenterLeiden 2333Netherlands

BACKGROUND Mycobacterium species(Mycobacterium sp)is an emerging cause of hip and knee prosthetic joint infection(PJI),and different species of this organism may be responsible for the same.AIM To evaluate the profile of hip and knee Mycobacterium PJI cases as published in the past 30 years.METHODS A literature search was performed in PubMed using the MeSH terms“Prosthesis joint infection”AND“Mycobacterium”for studies with publication dates from January 1,1990,to May 30,2021.To avoid missing any study,another search was performed with the terms“Arthroplasty infection”AND“Mycobacterium”in the same period as the previous search.The Preferred Reporting Items for Systematic Reviews and Meta-Analyses chart was used to evaluate the included studies for further review.In total,51 studies were included for further evaluation of thecases,type of pathogen,and treatment of PJI caused by Mycobacterium sp.RESULTS Seventeen identified Mycobacterium sp were reportedly responsible for hip/knee PJI in 115 hip/knee PJI cases,whereas in two cases there was no mention of any specific Mycobacterium sp.Mycobacterium tuberculosis(M.tuberculosis)was detected in 50/115(43.3%)of the cases.Nontuberculous mycobacteria(NTM)included M.fortuitum(26/115,22.6%),M.abscessus(10/115,8.6%),M.chelonae(8/115,6.9%),and M.bovis(8/115,6.9%).Majority of the cases(82/114,71.9%)had an onset of infection>3 mo after the index surgery,while in 24.6%(28/114)the disease had an onset in≤3 mo.Incidental intraoperative PJI diagnosis was made in 4 cases(3.5%).Overall,prosthesis removal was needed in 77.8%(84/108)of the cases to treat the infection.Overall infection rate was controlled in 88/102(86.3%)patients with Mycobacterium PJI.Persistent infection occurred in 10/108(9.8%)patients,while 4/108(3.9%)patients died due to the infection.CONCLUSION At least 17 Mycobacterium sp can be responsible for hip/knee PJI.Although M.tuberculosis is the most common causal pathogen,NTM should be considered as an emerging cause of hip/knee PJI.

关键词： Mycobacterium species Prosthetic joint infection hip Knee Systematic review