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Simultaneous bilateral acromial base fractures after staged reverse total shoulder arthroplasty: A case report

World Journal of Clinical Cases 2021年第1期9卷 284-290页

作者： Du-Han Kim Beom-Soo Kim chul-hyun cho Department of Orthopedic Surgery Keimyung University Dongsan HospitalKeimyung University School of MedicineDaegu 42601South Korea

BACKGROUND Acromial and scapular spine fractures after reverse total shoulder arthroplasty(RTSA)are a well-known complication that may negatively impact the effects of long-term ***,to the best of our knowledge,there has been no report of simultaneous bilateral fractures of the acromion or scapular spine that occurred following staged *** SUMMARY A 79-year-old right-handed male visited our outpatient clinic with a chief complaint of pain and limited motion of both shoulder joints for a one-year *** on plain radiographs and magnetic resonance images,the preoperative diagnosis was bilateral cuff tear arthropathy with failed rotator cuff *** patient was treated with staged bilateral RTSA at a two-month *** 5 and 3 mo after right and left side surgery,the patient returned to the outpatient clinic with severe pain and limited motion of both shoulder joints for 2 wk without a traumatic event.A computed tomography scan revealed nondisplaced acromial base fractures of both *** bilateral involvement,fracture location,and patient’s demand,open reduction and internal fixation(ORIF)using plate for bilateral acromial base fractures were *** 2 years after ORIF,the fracture was completely healed,and the patient was satisfied with shoulder *** This report describes an extremely rare case of simultaneous bilateral acromial base fractures after staged RTSA managed successfully by ORIF with a precontoured plate designed for distal clavicle *** acromial fracture after RTSA can be treated conservatively,simultaneous bilateral fractures may warrant surgical intervention as a means of addressing difficulties in activities of daily living.

关键词： Acromion Fracture Arthroplasty Shoulder Reverse total shoulder arthroplasty Case report Complication

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Bilateral snapping triceps syndrome:A case report

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World Journal of Clinical Cases 2023年第34期11卷 8228-8234页

作者： chul-hyun cho Kyung-Hwan Lim Du-Han Kim Department of Orthopedic Surgery Keimyung University Dongsan HospitalKeimyung University School of MedicineDaegu 42601South Korea Orthopedic Surgery Allright HospitalDaegu 42038South Korea

BACKGROUND Snapping triceps syndrome(STS)is a rare disease,while occurrence of bilateral STS is extremely *** is usually accompanied by dislocation of the ulnar nerve and double snapping is a clinically important ***,to the best of our knowledge,there has been no report of bilateral STS in young active *** SUMMARY A 23-year-old male presented with a complaint of discomfort and snapping on the medial side of both elbows while performing *** physical examination,two distinct snaps that were both palpable and audible were detected on additional clinical *** ultrasonography showed that the ulnar nerve and the medial head of the triceps were dislocated anteriorly over the medial epicondyle of the elbow during flexion ***,he was diagnosed as dislocation of the ulnar nerve and *** anterior subcutaneous transposition of the ulnar nerve combined with partial resection of the snapping portion of the triceps was *** patient’s pain and snapping symptoms were resolved immediately after *** months later,the patient was completely asymptomatic and returned to normal *** STS should be included in the differential diagnosis for active young patients who present with painful snapping on the medial side of the elbow joint,particularly when dislocation of the ulnar nerve is *** sonography is used to assist in accurate diagnosis and differentiation between isolated dislocation of the ulnar nerve and STS.

关键词： Triceps Triceps snapping syndrome Ulnar nerve Elbow Dynamic sonography Case report

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Bilateral dislocation of the long head of biceps tendon with intact rotator cuff tendon:A case report

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World Journal of Clinical Cases 2023年第26期11卷 6304-6310页

作者： Hyuk-Joon Sohn chul-hyun cho Du-Han Kim Department of Orthopedic Surgery Keimyung University Dongsan HospitalKeimyung University School of MedicineDaegu 42601South Korea

BACKGROUND Dislocation of the long head of biceps tendon(LHBT)usually involves rotator cuff injury,and isolated dislocation with an intact rotator cuff is *** cases of isolated dislocation have been ***,to the best of our knowledge,there has been no report of bilateral dislocation of the LHBT without rotator cuff *** SUMMARY A 23-year-old male presented to our outpatient clinic with left side dominant pain in both *** patient had no history of trauma or *** patient underwent intra-articular injection and physical therapy,but his symptoms *** on preoperative imaging,the diagnosis was bilateral dislocation of the *** of the bicipital groove was detected in both *** dislocation of the biceps tendon over an intact subscapularis tendon was identified by diagnostic *** biceps tenodesis was performed and continuous passive motion therapy was administered immediately after *** patient’s pain was resolved,and full functional recovery was achieved,and he was satisfied with the condition of his *** This study describes a rare case of bilateral dislocations of the LHBT without rotator cuff injury due to dysplasia of the bicipital groove.

关键词： Shoulder Biceps Dislocation Rotator cuff Tenodesis Case report

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Knot impingement after arthroscopic rotator cuff repair mimicking infection:A case report

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World Journal of Clinical Cases 2022年第15期10卷 5097-5102页

作者： Du-Han Kim Jong-Hyuk Jeon Byung-Chan choi chul-hyun cho Department of Orthopedic Surgery Keimyung University Dongsan HospitalKeimyung University School of MedicineDaegu 42601South Korea

BACKGROUND Knot impingement as a complication after arthroscopic rotator cuff repair(ARCR)has been suggested as a cause of persistent pain with limited *** report on a case involving a patient who developed knot impingement after ARCR who complained of acute onset of pain with limited motion,which was confused with *** SUMMARY A 55-year-old female who complained of severe pain with limited motion of the right shoulder visited our emergency *** range of motion could not be evaluated due to the patient’s severe *** patient had undergone ARCR using a suture-bridge technique at a local clinic four months ago for treatment of a small supraspinatus tear of the right *** erosive change of the undersurface of the acromion was observed on plain radiographs of the right shoulder,and a moderate amount of bursal fluid and synovial thickening with enhancement was observed by magnetic resonance *** of an analysis of the aspirated fluid showed that the WBC count was 3960 with 90% *** arthroscopic view showed healing of the repaired supraspinatus tendon and loose suture threads and knots with severe subacromial bursitis were *** of inflammatory tissues of the glenohumeral joint and subacromial space was performed for the removal of all suture *** patient’s symptoms subsided immediately after the surgical *** Although the incidence of knot impingement is rare,the possibility of knot impingement after ARCR should be a consideration.

关键词： Rotator cuff Knot impingement Shoulder Infection Arthroscopy Case report

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A New Encryption Mechanism Supporting the Update of Encrypted Data for Secure and Efficient Collaboration in the Cloud Environment

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 813-834页

作者： Chanhyeong cho Byeori Kim Haehyun cho Taek-Young Youn Department of Cyber Security Dankook UniversityYongin16890Republic of Korea Department of Software Soongsil UniversitySeoul07027Republic of Korea

With the rise of remote collaboration,the demand for advanced storage and collaboration tools has rapidly ***,traditional collaboration tools primarily rely on access control,leaving data stored on cloud servers vulnerable due to insufficient *** paper introduces a novel mechanism that encrypts data in‘bundle’units,designed to meet the dual requirements of efficiency and security for frequently updated collaborative *** bundle includes updated information,allowing only the updated portions to be reencrypted when changes *** encryption method proposed in this paper addresses the inefficiencies of traditional encryption modes,such as Cipher Block Chaining(CBC)and Counter(CTR),which require decrypting and re-encrypting the entire dataset whenever updates *** proposed method leverages update-specific information embedded within data bundles and metadata that maps the relationship between these bundles and the plaintext *** utilizing this information,the method accurately identifies the modified portions and applies algorithms to selectively re-encrypt only those *** approach significantly enhances the efficiency of data updates while maintaining high performance,particularly in large-scale data *** validate this approach,we conducted experiments measuring execution time as both the size of the modified data and the total dataset size *** show that the proposed method significantly outperforms CBC and CTR modes in execution speed,with greater performance gains as data size ***,our security evaluation confirms that this method provides robust protection against both passive and active attacks.

关键词： Cloud collaboration mode of operation data update efficiency

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Three-Stage Transfer Learning with AlexNet50 for MRI Image Multi-Class Classification with Optimal Learning Rate

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 155-183页

作者： Suganya Athisayamani A.Robert Singh Gyanendra Prasad Joshi Woong cho School of Computing Sastra Deemed to be UniversityThanjavur613401India Department of Computational Intelligence SRM Institute of Science and TechnologyKattankulathur603203India Department of AI and Software Engineering Kangwon National UniversitySamcheok25913Republic of Korea Department of Electronics Information and Communication EngineeringKangwon National UniversitySamcheok25913Republic of Korea

In radiology,magnetic resonance imaging(MRI)is an essential diagnostic tool that provides detailed images of a patient’s anatomical and physiological *** is particularly effective for detecting soft tissue ***,radiologists manually interpret these images,which can be labor-intensive and time-consuming due to the vast amount of *** address this challenge,machine learning,and deep learning approaches can be utilized to improve the accuracy and efficiency of anomaly detection in MRI *** manuscript presents the use of the Deep AlexNet50 model for MRI classification with discriminative learning *** are three stages for learning;in the first stage,the whole dataset is used to learn the *** the second stage,some layers of AlexNet50 are frozen with an augmented dataset,and in the third stage,AlexNet50 with an augmented dataset with the augmented *** method used three publicly available MRI classification datasets:Harvard whole brain atlas(HWBA-dataset),the School of Biomedical Engineering of Southern Medical University(SMU-dataset),and The National Institute of Neuroscience and Hospitals brain MRI dataset(NINS-dataset)for *** hyperparameter optimizers like Adam,stochastic gradient descent(SGD),Root mean square propagation(RMS prop),Adamax,and AdamW have been used to compare the performance of the learning ***-dataset registers maximum classification *** evaluated the performance of the proposed classification model using several quantitative metrics,achieving an average accuracy of 98%.

关键词： MRI tumors classification AlexNet50 transfer learning hyperparameter tuning optimizer

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Scalable Ir‑Doped NiFe_(2)O_(4)/TiO_(2)Heterojunction Anode for Decentralized Saline Wastewater Treatment and H_(2)Production

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Nano-Micro Letters 2025年第3期17卷 1-18页

作者： Sukhwa Hong Jiseon Kim Jaebeom Park Sunmi Im Michael R.Hoffmann Kangwoo cho Division of Environmental Science and Engineering Pohang University of Science and Technology(POSTECH)Pohang 790−784Korea Linde Laboratory California Institute of TechnologyPasadenaCA 91125USA Institute for Convergence Research and Education in Advanced Technology(I‑CREATE) Yonsei University International CampusIncheon 21983Republic of Korea

Wastewater electrolysis cells(WECs)for decentralized wastewater treatment/reuse coupled with H_(2)production can reduce the carbon footprint associated with transportation of water,waste,and energy *** study reports Ir-doped NiFe_(2)O_(4)(NFI,~5 at%Ir)spinel layer with TiO_(2)overlayer(NFI/TiO_(2)),as a scalable heterojunction anode for direct electrolysis of wastewater with circumneutral pH in a single-compartment *** dilute(0.1 M)NaCl solutions,the NFI/TiO_(2)marks superior activity and selectivity for chlorine evolution reaction,outperforming the benchmark IrO_(2).Robust operation in near-neutral pH was *** including operando X-ray absorption spectroscopy unveiled crucial roles of TiO_(2) which serves both as the primary site for Cl−chemisorption and a protective layer for NFI as an ohmic *** electrolysis of NH4+-laden synthetic wastewater demonstrated that NFI/TiO_(2)not only achieves quasi-stoichiometric NH_(4)^(+)-to-N_(2)conversion,but also enhances H_(2)generation efficiency with minimal competing reactions such as reduction of dissolved oxygen and reactive *** scaled-up WEC with NFI/TiO_(2)was demonstrated for electrolysis of toilet wastewater.

关键词： Wastewater electrolysis cell Ir-doped NiFe_(2)O_(4) Reactive chlorine species Decentralized H_(2)production On-site wastewater treatment

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Nonampullary duodenal adenoma:Current understandingof its diagnosis,pathogenesis,and clinical management

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World Journal of Gastroenterology 2016年第2期22卷 853-861页

作者： chul-hyun Lim Young-Seok cho Department of Internal Medicine Seoul St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 137-701South Korea

Nonampullary duodenal adenomas are relatively common in familial adenomatous polyposis(FAP), but nonampullary sporadic duodenal adenomas(SDAs)are rare. Emerging evidence shows that duodenal adenomas, regardless of their anatomic location and whether they are sporadic or FAP-related, share morphologic and molecular features with colorectal adenomas. The available data suggest that duodenal adenomas develop to duodenal adenocarcinomas via similar mechanisms. The optimal approach for management of duodenal adenomas remains to be determined. The techniques for endoscopic resection of duodenal adenoma include snare polypectomy, endoscopic mucosal resection(EMR), endoscopic submucosal dissection(ESD), and argon plasma coagulation ablation. EMR may facilitate removal of large duodenal polyps. Although several studies have reported cases of successful ESD for duodenal adenomas, the procedure is technically difficult to perform safely because of the anatomical properties of the duodenum. Although current clinical practice recommends endoscopic resection of all large duodenal adenomas in patients with FAP, endoscopic treatment is usually insufficient to guarantee a polypfree duodenum. Surgery is indicated for FAP patients with severe polyposis or nonampullary SDAs or FAPrelated polyps not amenable to endoscopic resection. Further studies are needed to develop newer endoscopic techniques to guide diagnostic and therapeutic decisions for future management of nonampullary duodenal adenomas.

关键词： Duodenal adenoma Endoscopy Familialadenomatous polyposis Endoscopic mucosal resection Endoscopic submucosal dissection

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Solution‑Processed Thin Film Transparent Photovoltaics:Present Challenges and Future Development

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Nano-Micro Letters 2025年第2期17卷 566-600页

作者： Tianle Liu Munerah M.S.Almutairi Jie Ma Aisling Stewart Zhaohui Xing Mengxia Liu Bo Hou Yuljae cho UM-SJTU Joint Institute Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China School of Physics and Astronomy Cardiff UniversityCardiff CF243AAWalesUK Department of Electrical and Computer Engineering Yale UniversityNew HavenCT 06511USA Energy Sciences Institute Yale UniversityWest HavenCT 06516USA Future Photovoltaics Research Center Global Institute of Future TechnologyShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Electrical energy is essential for modern society to sustain economic *** soaring demand for the electrical energy,together with an awareness of the environmental impact of fossil fuels,has been driving a shift towards the utilization of solar ***,traditional solar energy solutions often require extensive spaces for a panel installation,limiting their practicality in a dense urban *** overcome the spatial constraint,researchers have developed transparent photovoltaics(TPV),enabling windows and facades in vehicles and buildings to generate electric *** TPV advancements are focused on improving both transparency and power output to rival commercially available silicon solar *** this review,we first briefly introduce wavelength-and non-wavelengthselective strategies to achieve *** of merit and theoretical limits of TPVs are discussed to comprehensively understand the status of current TPV *** we highlight recent progress in different types of TPVs,with a particular focus on solution-processed thin-film photovoltaics(PVs),including colloidal quantum dot PVs,metal halide perovskite PVs and organic *** applications of TPVs are also reviewed,with emphasis on agrivoltaics,smart windows and ***,current challenges and future opportunities in TPV research are pointed out.

关键词： Transparent semiconductors Solution-processable transparent solar cell Emerging solar cell materials Buildingintegrated photovoltaics

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原发性冻结肩18F-FDG PET/CT代谢参数与临床的相关性

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中华核医学与分子影像杂志 2017年第11期37卷 750-750页

作者：李梦婷兰晓莉 Kyoung Sook Won Du Hwan Kim Duk hyun Sung Bong-Il Song Hae Won Kim Kwang-Soon Song Si-Wook Lee chul-hyun cho 华中科技大学同济医学院附属协和医院核医学科 Department of Orthopedic Surgery Pain Research CenterDongsan Medical CenterSchool of Medicine Keimyung University

目的18F-脱氧葡萄糖(FDG)PET/CT可用于显示骨骼肌肉系统的炎性病变,可能有助于阐明冻结肩(FS)的病理生理学。该研究旨在描述原发性FS患者18F-FDG PET/CT的摄取特征,并探索代谢参数与临床表现间的相关性。方法对35例单侧原发性FS患者进行... 详细信息

目的18F-脱氧葡萄糖(FDG)PET/CT可用于显示骨骼肌肉系统的炎性病变,可能有助于阐明冻结肩(FS)的病理生理学。该研究旨在描述原发性FS患者18F-FDG PET/CT的摄取特征,并探索代谢参数与临床表现间的相关性。方法对35例单侧原发性FS患者进行18F-FDG PET/CT显像。收集临床资料:疼痛、功能评分和被动活动范围(ROM)。在4个感兴趣区域(ROIs)[旋转间隔(RI)、前关节囊(AJC)、腋窝凹陷(AR)和后关节囊(PJC)]测量衰减校正后的轴向图像最大标准化摄取值(SUVmax)。结果受累肩部的4个ROIs平均SUVmax明显高于健侧肩。病变肩部RI和AR平均SUVmax高于AJC和PJC,且AJC平均SUVmax高于PJC。病变肩有3种摄取模式:AR优势型(15例)、RI优势型(9例)、RI+AR优势型(11例)。AR的SUVmax与外展和前屈曲呈负相关。RI的SUVmax与外旋和内旋呈负相关。AJC的SUVmax与所有的ROM均呈负相关。但PJC的SUVmax与任何ROM间均未见相关性。结论包括RI和AR在内的前-下囊部位是原发性FS的主要病变部位;18F-FDG PET/CT代谢参数与ROM相关。这些结果表明,AR和RI损伤分别与上升限制和旋转限制有关。

关键词：冻结肩病理生理学 18F-FDG PET/CT 腋窝凹陷旋转间隔

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