Modeling Geometrically Nonlinear FG Plates: A Fast and Accurate Alternative to IGA Method Based on Deep Learning

Isogeometric analysis (IGA) is known to showadvanced features compared to traditional finite element approaches.Using IGA one may accurately obtain the geometrically nonlinear bending behavior of plates with functionalgrading (FG). However, the procedure is usually complex and often is time-consuming. We thus put forward adeep learning method to model the geometrically nonlinear bending behavior of FG plates, bypassing the complexIGA simulation process. A long bidirectional short-term memory (BLSTM) recurrent neural network is trainedusing the load and gradient index as inputs and the displacement responses as outputs. The nonlinear relationshipbetween the outputs and the inputs is constructed usingmachine learning so that the displacements can be directlyestimated by the deep learning network. To provide enough training data, we use S-FSDT Von-Karman IGA andobtain the displacement responses for different loads and gradient indexes. Results show that the recognition erroris low, and demonstrate the feasibility of deep learning technique as a fast and accurate alternative to IGA formodeling the geometrically nonlinear bending behavior of FG plates.

Micro defects formation and dynamic response analysis of steel plate of quasi-cracking area subjected to explosive load

As the protective component,steel plate had attracted extensive attention because of frequently threats of explosive loads.In this paper,the evolution of microstructure and the mechanism of damage in the quasi-cracking area of steel plate subjected to explosive load were discussed and the relationships between micro defects and dynamic mechanical response were revealed.After the explosion experiment,five observation points were selected equidistant from the quasi-cracking area of the section of the steel plate along the thickness direction,and the characteristics of micro defects at the observation points were analyzed by optical microscope(OM),scanning electron microscope(SEM) and electron backscattered diffraction(EBSD).The observation result shows that many slip bands(SBs) appeared,and the grain orientation changed obviously in the steel plate,the two were the main damage types of micro defects.In addition,cracks,peeling pits,grooves and other lager micro defects were appeared in the lower area of the plate.The stress parameters of the observation points were obtained through an effective numerical model.The mechanism of damage generation and crack propagation in the quasicracking area were clarified by comparing the specific impulse of each observation point with the corresponding micro defects.The result shows that the generation and expansion of micro defects are related to the stress area(i.e.the upper compression area,the neutral plane area,and the lower tension area).The micro defects gather and expand at the grain boundary,and will become macroscopic damage under the continuous action of tensile stress.Besides,the micro defects at the midpoint of the section of the steel plate in the direction away from the explosion center(i.e.the horizontal direction) were also studied.It was found that the specific impulse at these positions were much smaller than that in the thickness direction,the micro defects were only SBs and a few micro cracks,and the those decreased with the increase of the distance from the explosion center.

Constitutive Behavior of the Interface between UHPC and Steel Plate without Shear Connector:From Experimental to Numerical Study

The application of ultra-high performance concrete(UHPC)as a covering layer for steel bridge decks has gained widespread popularity.By employing a connection without a shear connector between the steel plate and UHPC,namely,the sandblasted interface and the epoxy adhesive with sprinkled basalt aggregate interface,the installation cannot only be simplified but also the stress concentration resulting from the welded shear connectors can be eliminated.This study develops constitutive models for these two interfaces without shear connectors,based on the interfacial pull-off and push-out tests.For validation,three-point bending tests on the steel-UHPC composite plates are conducted.The results indicated that the proposed bilinear traction-separation model for the sandblasted interface and the trapezoidal traction-separation model for the epoxy adhesive with sprinkled basalt aggregate interface can generally calibrate the interfacial behavior.However,the utilization of the experimentally determined pure shear strength underestimates the load-carrying capacity of the composite plates in the case of three-point bending tests.By recalling the Mohr-Coulomb criterion,this underestimation is attributed to the enhancement of the interface shear strength by the presence of normal stress.

Review of Computational Approaches to Optimization Problems in Inhomogeneous Rods and Plates

In this paper,we review computational approaches to optimization problems of inhomogeneous rods and plates.We consider both the optimization of eigenvalues and the localization of eigenfunctions.These problems are motivated by physical problems including the determination of the extremum of the fundamental vibration frequency and the localization of the vibration displacement.We demonstrate how an iterative rearrangement approach and a gradient descent approach with projection can successfully solve these optimization problems under different boundary conditions with different densities given.

Investigation of Liquid Cooling Plate for Server CPUs Based on Topology Optimization

In this study, a microchannel liquid cooling plate (LCP) is proposed for Intel Xeon 52.5 mm * 45 mm packaged architecture processors based on topology optimization (TO). Firstly, a mathematical model for topology optimization design of the LCP is established based on heat dissipation and pressure drop objectives. We obtain a series of two-dimensional (2D) topology optimization configurations with different weighting factors for two objectives. It is found that the biomimetic phenomenon of the topologically optimized flow channel structure is more pronounced at low Reynolds numbers. Secondly, the topology configuration is stretched into a three-dimensional (3D) model to perform CFD simulations under actual operating conditions. The results show that the thermal resistance and pressure drop of the LCP based on topology optimization achieve a reduction of approximately 20% - 50% compared to traditional serpentine and microchannel straight flow channel structures. The Nusselt number can be improved by up to 76.1% compared to microchannel straight designs. Moreover, it is observed that under high flow rates, straight microchannel LCPs exhibit significant backflow, vortex phenomena, and topology optimization structures LCPs also tend to lead to loss of effectiveness in the form of tree root-shaped branch flows. Suitable flow rate ranges for LCPs are provided. Furthermore, the temperature and pressure drop of experimental results are consistent with the numerical ones, which verifies the effectiveness of performance for topology optimization flow channel LCP.

Enhancing Stress Intensity Factor Reduction in Cracks Originating from a Circular Hole in a Rectangular Plate under Uniaxial Stress through Piezoelectric Actuation

Circular holes are commonly employed in engineering designs;however, they often serve as locations where cracks initiate and propagate. This paper explores a novel approach to structural repair by utilizing piezoelectric actuators. The primary focus of this study is to investigate the influence of an adhesively bonded piezoelectric actuator patch placed above a circular hole on the stress intensity factor (SIF) in an aluminium plate. The plate is subjected to uniaxial tensile stress, while the piezoelectric actuator is excited with varying voltage levels. The analysis is conducted using the finite element method (FEM), a powerful numerical technique for simulating complex structures. The study assesses the stress distribution and employs the SIF as an adequate criterion for evaluating the impact of different patch configurations. The results indicate a strong correlation between the applied voltage and the SIF. Whether the SIF increases or decreases depends on the polarization of the piezoelectric actuator. Particularly noteworthy is the finding that rectangular patches in a horizontal orientation significantly reduce the SIF compared to other patch geometries. Moreover, double-sided patches exhibit a pronounced decrease in the SIF compared to single-sided patches. In summary, this research underscores the potential of piezoelectric actuators in mitigating stress intensity in structures with circular hole with crack initiation. It offers valuable insights into the influence of applied voltage, patch geometry, and patch placement on the SIF, thereby contributing to developing effective strategies for enhancing structural integrity.

动态CTA结合CTP成像对偏头痛患者血管形态学及脑血流量改变的评价

目的分析动态CT血管造影(CTA)结合CT灌注成像(CTP)在偏头痛患者血管形态学改变及脑血流量改变评价中的价值。方法选取2021-08—2023-08大庆油田总医院收治的60例偏头痛患者为研究对象,根据患者是否存在先兆症状分为MA组(32例)和MoA组(28例),所有患者在偏头痛症状消失3 d后的非发作期(对照组)再次进行颅脑动态CTA与CTP检查,并与发作期进行对比,比较MA组、MoA组血管痉挛、血流量异常发生率、rCBF变化情况及不同脑叶镜像ROI区血流量AI值。结果MA组患者的血管痉挛发生率31.25%,rCBF增加发生率59.38%,均高于MoA组的7.14%、17.86%,rCBF减少的发生率25.00%,低于MoA组的64.29%,差异均有统计学意义(P<0.05)。2组患者的头痛位置比较差异无统计学意义(P>0.05)。MA组、MoA组与对照组额叶、颞叶、枕叶、小脑、顶叶等不同脑叶镜像ROI区血流量AI值比较,差异均有统计学意义(P<0.05)。结论CTA结合CTP检查能够较好地评价偏头痛患者血管形态学及脑血流量改变,可作为临床诊疗的重要依据。

无界域上具有记忆的非自治Plate方程随机吸引子的存在性

研究无界域上一类具有衰退记忆和加性噪声的非自治Plate方程解的长时间行为.利用一致估计验证了解的拉回渐近紧性,获得了其随机吸引子的存在性.

关节镜下双Endobutton钛板固定治疗单侧Rockwood Ⅲ型急性肩锁关节脱位的临床疗效观察

目的探讨关节镜辅助下双Endobutton钛板固定治疗患者单侧RockwoodⅢ型急性肩锁关节脱位的临床疗效。方法采用回顾性研究方法,选取2022年1月至2023年7月在首都医科大学附属北京友谊医院收治的单侧RackwoodⅢ型急性肩锁关节脱位的患者49例,根据手术方式的不同分为观察组(n=27)和对照组(n=22)。观察组接受关节镜辅助下肩锁关节脱位复位、双Endobutton钛板内固定手术治疗,对照组接受传统的切开复位锁骨钩钢板内固定手术治疗。所有患者进行门诊随访,记录术前、术后12周和末次随访时患者的视觉模拟疼痛评分(VAS)、美国加州大学洛杉矶分校肩关节系统评分(UCLA)以及肩关节正位X线上肩锁关节间距(ACD)和喙锁关节间距(CCD),并比较两种治疗方法的临床疗效。结果所有患者得到完整随访,随访时间为25.3~30.6周,平均(28.8±2.1)周。所有患者均未出现血管和神经损伤并发症。术后12周和末次随访,两组患者的VAS评分较术前有明显降低,UCLA肩关节评分均较术前升高,差异均有统计学意义(P<0.05);观察组和对照组术后12周和末次随访的VAS[(3.1±0.5)分vs.(3.3±0.6)分,(2.8±0.6)分vs.(2.7±0.8)分]、UCLA肩关节评分[(33.5±3.6)分vs.(33.7±3.2)分,(34.1±2.9)分vs.(34.7±2.6)分]比较,差异均无统计学意义(P>0.05)。术后12周和末次随访,两组患者的ACD和CCD均小于术前,差异均有统计学意义(P<0.05);两组间术后12周和末次随访的ACD[(5.2±1.8)分vs.(5.6±2.1)分,(5.1±1.7)分vs.(5.5±2.0)分]和CCD[(7.4±2.9)分vs.(7.2±2.5)分,(7.5±2.6)分vs.(7.1±2.6)分]比较,差异均无统计学意义(P>0.05)。末次随访观察组和对照组的优良率比较(81.6%vs.81.8%),差异无统计学意义(P>0.05)。结论关节镜下复位单侧RockwoodⅢ型急性肩锁关节脱位并使用双Endobutton钛板固定能够获得良好的治疗效果,与传统的切开复位钩钢板固定没有临床疗效的差异。

Response to the Lomagundi-Jatuli Event in the southwestern margin of the Yangtze Plate:Evidence from the carbon and oxygen isotopes of the Paleoproterozoic Yongjingshao Formation

The Lomagundi-Jatuli Event(LJE)refers to the significant positive carbon isotope excursion in seawater constituents that occurred immediately after the increase in atmospheric oxygen content during the Paleoproterozoic(2.22-2.06 Ga).Theδ^(13)C values of 46 dolostone samples collected from the Paleoproterozoic Yongjingshao Formation varied in the range of 0.05‰-4.95‰(V-PDB;maximum:4.95‰)in this study,which may be related to the multicellular eukaryotes in the Liangshan Formation in the Yimen Group.They are much higher than theδ^(13)C values of marine carbonates(-1.16‰on average).Theδ^(13)C values of other formations in the Paleoproterozoic Yimen Group are negative.The notable positive carbon isotope anomalies of the Yongjingshao Formation indicate the response to the LJE at the southwestern margin of the Yangtze Block,which is reported for the first time.Furthermore,they are comparable to theδ^(13)C values of carbonates in the Dashiling Formation of the Hutuo Group in the Wutaishan area in the North China Craton,the Wuzhiling Formation of the Songshan Group in the Xiong'er area,Henan Province,and the Dashiqiao Formation of the Liaohe Group in the Guanmenshan area,Liaoning Province.Therefore,it can be further concluded that the LJE is a global event.This study reveals that LJE occurred in Central Yunnan at 2.15-2.10 Ga,lasting for about 50 Ma.The macro-columnar,bean-shaped,and microfilament fossils and reticular ultramicrofossils of multicellular eukaryotes in this period were discovered in the Liangshan Formation of the Yimen Group.They are the direct cause for the LJE and are also the oldest paleontological fossils ever found.The major events successively occurring in the early stage of the Earth include the Great Oxygenation Event(first occurrence),the global Superiortype banded iron formations(BIFs),the Huronian glaciation,the Great Oxygenation Event(second occurrence),the explosion of multicellular eukaryotes,the positive carbon isotope excursion,and the global anoxic and selenium-rich sedimentary event.The authors think that the North China Craton and the Yangtze Craton were possibly in different tectonic locations of the same continental block during the Proterozoic.

YOLO and Blockchain Technology Applied to Intelligent Transportation License Plate Character Recognition for Security

Privacy and trust are significant issues in intelligent transportation systems(ITS).Data security is critical in ITS systems since sensitive user data is communicated to another user over the internet through wireless devices and routes such as radio channels,optical fiber,and blockchain technology.The Internet of Things(IoT)is a network of connected,interconnected gadgets.Privacy issues occasionally arise due to the amount of data generated.However,they have been primarily addressed by blockchain and smart contract technology.While there are still security issues with smart contracts,primarily due to the complexity of writing the code,there are still many challenges to consider when designing blockchain designs for the IoT environment.This study uses traditional blockchain technology with the“You Only Look Once”(YOLO)object detection method to accurately locate and identify license plates.While YOLO and blockchain technologies used for intelligent vehicle license plate recognition are promising,they have received limited research attention.Real-time object identification and recognition would be possible by combining a cutting-edge object detection technique with a regional convolutional neural network(RCNN)built with the tensor flow core open source libraries.This method works reasonably well for identifying any license plate.The Automatic License Plate Recognition(ALPR)approach delivered outstanding results in various datasets.First,with a recognition rate of 96.2%,our system(UFPR-ALPR)surpassed the previously used technology,consisting of 4500 frames and around 150 films.Second,a deep learning algorithm was trained to recognize images of license plate numbers using the UFPR-ALPR dataset.Third,the license plate’s characters were complicated for standard methods to identify because of the shifting lighting correctly.The proposed model,however,produced beneficial outcomes.

Multi-field coupling and free vibration of a sandwiched functionally-graded piezoelectric semiconductor plate

Sandwiched functionally-graded piezoelectric semiconductor(FGPS)plates possess high strength and excellent piezoelectric and semiconductor properties,and have significant potential applications in micro-electro-mechanical systems.The multi-field coupling and free vibration of a sandwiched FGPS plate are studied,and the governing equation and natural frequency are derived with the consideration of electron movement.The material properties in the functionally-graded layers are assumed to vary smoothly,and the first-order shear deformation theory is introduced to derive the multi-field coupling in the plate.The total strain energy of the plate is obtained,and the governing equations are presented by using Hamilton’s principle.By introducing the boundary conditions,the coupling physical fields are solved.In numerical examples,the natural frequencies of sandwiched FGPS plates under different geometrical and physical parameters are discussed.It is found that the initial electron density can be used to modulate the natural frequencies and vibrational displacement of sandwiched FGPS plates in the case of nano-size.The effects of the material properties of FGPS layers on the natural frequencies are also examined in detail.

PWI-MRI与CTP评估烟雾病患者脑血流动力学的效果对比

目的探究分析PWI-MRI与CTP评估烟雾病患者脑血流动力学的效果对比。方法选取我院2019年2月-2022年3月收治的烟雾病患者36例(经过DSA或TOF-MRA证实)作为研究对象。通过PWI-MRI与CTP分别评估烟雾病患者脑血流动力学。观察脑血容量(CBV)、脑血流量(CBF)、平均通过时间(MTT)、达峰时间(TTP)。结果PWI-MRI与CTP在对患者CBV、CBF、MTT、TTP存在差异性,具有统计学意义(P<0.05)。结论PWI-MRI与CTP评估烟雾病患者脑血流动力学均具备诊断价值,临床上根据需求做诊断方式的选择。

Nutrient-regulated dynamics of chondroprogenitors in the postnatal murine growth plate

Longitudinal bone growth relies on endochondral ossification in the cartilaginous growth plate,where chondrocytes accumulate and synthesize the matrix scaffold that is replaced by bone.The chondroprogenitors in the resting zone maintain the continuous turnover of chondrocytes in the growth plate.Malnutrition is a leading cause of growth retardation in children;however,after recovery from nutrient deprivation,bone growth is accelerated beyond the normal rate,a phenomenon termed catch-up growth.Although nutritional status is a known regulator of long bone growth,it is largely unknown whether and how chondroprogenitor cells respond to deviations in nutrient availability.Here,using fate-mapping analysis in Axin2CreERT2 mice,we showed that dietary restriction increased the number of Axin2+chondroprogenitors in the resting zone and simultaneously inhibited their differentiation.Once nutrient deficiency was resolved,the accumulated chondroprogenitor cells immediately restarted differentiation and formed chondrocyte columns,contributing to accelerated growth.Furthermore,we showed that nutrient deprivation reduced the level of phosphorylated Akt in the resting zone and that exogenous IGF-1 restored the phosphorylated Akt level and stimulated differentiation of the pooled chondroprogenitors,decreasing their numbers.Our study of Axin2CreERT2 revealed that nutrient availability regulates the balance between accumulation and differentiation of chondroprogenitors in the growth plate and further demonstrated that IGF-1 partially mediates this regulation by promoting the committed differentiation of chondroprogenitor cells.

微型钢板内固定术在BartonicekⅢ型后踝关节骨折的应用

目的分析微型钢板内固定术在BartonicekⅢ型后踝关节骨折的应用。方法选取2023年1月至2024年1月在南阳市中心医院确诊的96例踝关节骨折患者,根据不同的治疗方式分为研究组(n=40)和对照组(n=56),对照组采用空心钉内固定术,研究组采用微型钢板内固定术。在术后3个月,比较两组患者手术相关指标、疗愈情况及术后并发症;分别在术前、术后3个月,比较两组患者踝关节活动度和美国足踝外科医师协会(AOFAS)评分。结果在术后,研究组出血量、消肿时间和伤口拆线时间均短于对照组,差异有统计学意义(P<0.05);术后3个月,研究组踝关节内翻及外翻角度低于对照组,背伸及跖屈角度均高于对照组,差异有统计学意义(P<0.05);术后3个月,研究组及对照组AOFAS得分均高于手术前,且研究组高于对照组,差异有统计学意义(P<0.05);术后3个月,研究组愈合率(95.00%)高于对照组(80.36%),差异有统计学意义(P<0.05);术后3个月,研究组并发症发生情况低于对照组,差异有统计学意义(P<0.05)。结论采用微型钢板内固定术治疗BartonicekⅢ型后踝关节骨折患者,可加快术后愈合,减少并发症。

Dynamic modelling and chaos control for a thin plate oscillator using Bubnov–Galerkin integral method

The utilization of thin plate systems based on acoustic vibration holds significant importance in micro-nano manipulation and the exploration of nonlinear science. This paper focuses on the analysis of an actual thin plate system driven by acoustic wave signals. By combining the mechanical analysis of thin plate microelements with the Bubnov–Galerkin integral method, the governing equation for the forced vibration of a square thin plate is derived. Notably,the reaction force of the thin plate vibration system is defined as f=α|w|, resembling Hooke’s law. The energy function and energy level curve of the system are also analyzed. Subsequently, the amplitude–frequency response function of the thin plate oscillator is solved using the harmonic balance method. Through numerical simulations, the amplitude–frequency curves are analyzed for different vibration modes under the influence of various parameters. Furthermore, the paper demonstrates the occurrence of conservative chaotic motions in the thin plate oscillator using theoretical and numerical methods. Dynamics maps illustrating the system’s states are presented to reveal the evolution laws of the system. By exploring the effects of force fields and system energy, the underlying mechanism of chaos is interpreted. Additionally, the phenomenon of chaos in the oscillator can be controlled through the method of velocity and displacement states feedback, which holds significance for engineering applications.

A Study on the Plate Tectonics in the Early Earth Period Based on the Core-Magma Angular Momentum Exchange

By using a dynamical approach of core-magma angular momentum exchange, this study theoretically explains the continental formation and plate drift as well as main mountain uplifts in the early Earth period. The present mantle and lithosphere were the partial part of magma fluid layer (mantle currents) before and after the Earth’s crust formation. Thus, a theory is presented regarding the driving forces of plate drift, in the form of planetary scale mantle currents. The origin of mantle currents is traced back to the formation of the solar system. It is assumed that small particles (nebula matter) orbiting the Sun assembled, and a molten sphere of primordial Earth with different minerals evenly distributed throughout the total mass came into existence. Subsequently, a process called planetary differentiation took place, as the core and mantle currents (magma layer) started separating. This will inevitably cause the Earth to spin faster, and it is presumed that the inner core first gained angular velocity, thereby spinning faster than the material found at a shallower depth. The time interval of the angular momentum exchange between the core and the magma should have lasted for at least 0.1 - 0.2 billion years. Planetary scale vertical and horizontal circulations of mantle currents took place, and angular momentum exchange was realized through the vertical component. The horizontal part of the mantle currents, near the bottom of the lithosphere, became a real force to drive continental split and plate drift. The acceleration and deceleration of the core compared with the mantle currents then caused different flow directions in the two hemispheres. When the inner core rotates faster from west to east, upper mantle currents will tend to flow westwards and towards the two poles. Surface lighter materials converged towards the two poles so that two continental polar crust caps appeared when the magma surface was cooling. This caused two original supercontinents to form about 4.54 billion years ago, while an original oceanic zone formed in the tropics. The uneven latitudinal variation of crustal thickness did lead to thermal differences within the mantle currents. This caused the core-magma angular momentum exchange. Deceleration of the core will cause two flow vectors, northwesterly in the Northern Hemisphere and southwesterly in the Southern Hemisphere. The history of plate drift is then driven by the motion of upper mantle currents. A distinct Equatorial Convergence Zone of magma flow which developed early in Earth’s history, gave way to the Intertropical Convergence Zone, serving as a border for the magma fluids and continents from the two hemispheres. A possible mechanism for the formation of the Himalayans is the maximum shear stress created by an orthogonal convergence or collision between two continental plates driven by the upper mantle currents.

Study on Factors Affecting Aerobial Plate Count in Raw Milk

[Objectives]This study was conducted to investigate the main factors affecting the aerobial plate count in raw milk.[Methods]Drinking water,medicated baths and raw milk under different storage and transportation conditions were detected for the values of aerobial plate count to analyze their effects on the aerobial plate count in raw milk.[Results]Disinfection of drinking water tanks could significantly reduce the aerobial plate count in water.The use of medicated baths before and after milking could effectively reduce the aerobial plate count and had a significant bactericidal effect.The growth of microorganisms in raw milk stored below 4℃was relatively slow.Regularly disinfecting drinking water tanks and disinfecting nipples before and after milking could reduce the aerobial plate count in the tanks and nipples.After raw milk was extruded,the temperature should decrease to 0-4℃within 2 h,and the storage time should not exceed 48 h,which could effectively control the aerobial plate count in raw milk.[Conclusions]This study provides a reference for scientific control of the aerobial plate count in raw milk.

Design and analysis of a high loss density motor cooling system with water cold plates

Aiming at reducing the difficulty of cooling the interior of high-density motors,this study proposed the placement of a water cold plate cooling structure between the axial laminations of the motor stator.The effect of the cooling water flow,thickness of the plate,and motor loss density on the cooling effect of the water cold plate were studied.To compare the cooling performance of water cold plate and outer spiral water jacket cooling structures,a high-speed permanent magnet motor with a high loss density was used to establish two motor models with the two cooling structures.Consequently,the cooling effects of the two models were analyzed using the finite element method under the same loss density,coolant flow,and main dimensions.The results were as follows.(1)The maximum and average temperatures of the water cold plate structure were reduced by 25.5%and 30.5%,respectively,compared to that of the outer spiral water jacket motor;(2)Compared with the outer spiral water jacket structure,the water cold plate structure can reduce the overall mass and volume of the motor.Considering a 100 kW high-speed permanent magnet motor as an example,a water cold plate cooling system was designed,and the temperature distribution is analyzed,with the result indicating that the cooling structure satisfied the cooling requirements of the high loss density motor.

TightRope带襻钢板与Endobutton钢板治疗肩锁关节脱位的疗效比较

目的比较TightRope带襻钢板与Endobutton钢板在治疗肩锁关节脱位中的疗效。方法回顾性分析2021年3月~2023年2月常州市第二人民医院创伤中心94例肩锁关节脱位的临床资料,根据时间段分为2组,2021年3月~2022年2月采用Endobutton钢板治疗(E组,n=47),2022年3月~2023年2月采用TightRope带襻钢板治疗(T组,n=47),末次随访比较2组围术期指标、疼痛视觉模拟评分(Visual Analogue Scale,VAS)、Constant-Murley肩关节功能评分及手术并发症发生率。结果T组手术时间、术中出血量、切口长度及术后7 d VAS评分明显短于/低于E组(P<0.05)。2组神经损伤、内固定移位、锁骨骨折、血管损伤及感染发生率无统计差异(χ~2=1.389,P=0.239)。2组术后9个月肩关节功能主客观评分与术前比较均得到明显改善(均P=0.000);术后9个月肩关节功能主客观评分2组比较差异无显著性(P>0.05)。结论TightRope带襻钢板和Endobutton钢板治疗肩锁关节脱位均效果显著,可有效改善患者肩关节功能。与Endobutton钢板比较,TightRope带襻钢板手术创伤更小,出血更少,明显减轻术后疼痛,更有利于患者早期功能锻炼。