Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine最新文献_第10页

Overloading effect on the osmo-viscoelastic and recovery behavior of the intervertebral disc. 过载对椎间盘渗透弹性和恢复行为的影响。

IF 1.8 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2024-03-13 DOI: 10.1177/09544119241232286

Faten Feki, Rym Taktak, Nader Haddar, Melissa Moulart, Fahmi Zaïri, Fahed Zaïri

{"title":"Overloading effect on the osmo-viscoelastic and recovery behavior of the intervertebral disc.","authors":"Faten Feki, Rym Taktak, Nader Haddar, Melissa Moulart, Fahmi Zaïri, Fahed Zaïri","doi":"10.1177/09544119241232286","DOIUrl":"10.1177/09544119241232286","url":null,"abstract":"In vitro studies investigating the effect of high physiological compressive loads on the intervertebral disc mechanics as well as on its recovery are rare. Moreover, the osmolarity effect on the disc viscoelastic behavior following an overloading is far from being studied. This study aims to determine whether a compressive loading-unloading cycle exceeding physiological limits could be detrimental to the cervical disc, and to examine the chemo-mechanical dependence of this overloading effect. Cervical functional spine units were subjected to a compressive loading-unloading cycle at a high physiological level (displacement of 2.5 mm). The overloading effect on the disc viscoelastic behavior was evaluated through two relaxation tests conducted before and after cyclic loading. Afterward, the disc was unloaded in a saline bath during a rest period, and its recovery response was assessed by a third relaxation test. The chemo-mechanical coupling in the disc response was further examined by repeating this protocol with three different saline concentrations in the external fluid bath. It was found that overloading significantly alters the disc viscoelastic response, with changes statistically dependent on osmolarity conditions. The applied hyper-physiological compressive cycle does not cause damage since the disc recovers its original viscoelastic behavior following a rest period. Osmotic loading only influences the loading-unloading response; specifically, increasing fluid osmolarity leads to a decrease in disc relaxation after the applied cycle. However, the disc recovery is not impacted by the osmolarity of the external fluid.","PeriodicalId":20666,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine","volume":" ","pages":"430-437"},"PeriodicalIF":1.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140120480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review of non-penetrating ballistic testing techniques for protection assessment: From biological data to numerical and physical surrogates. 审查用于防护评估的非穿透弹道测试技术：从生物数据到数字和物理替代物。

IF 1.8 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2024-02-28 DOI: 10.1177/09544119241232122

Martin Chaufer, Rémi Delille, Benjamin Bourel, Christophe Maréchal, Franck Lauro, Olivier Mauzac, Sébastien Roth

引用次数: 0

RETRACTED: Brain tumor diagnosis from MRI based on Amended Water Strider Algorithm. 回收通知：基于修正水黾算法的磁共振成像脑肿瘤诊断。

IF 1.7 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2023-01-18 DOI: 10.1177/09544119221147102

引用次数: 0

The comparison between various methods of mandibular reconstruction based on finite element analysis. 基于有限元分析的各种下颌骨重建方法的比较。

IF 1.8 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2024-02-28 DOI: 10.1177/09544119241232282

Mehdi Parvan, Mohammad Saleh Khaghaninejad, Mohammad Taghi Karimi

{"title":"The comparison between various methods of mandibular reconstruction based on finite element analysis.","authors":"Mehdi Parvan, Mohammad Saleh Khaghaninejad, Mohammad Taghi Karimi","doi":"10.1177/09544119241232282","DOIUrl":"10.1177/09544119241232282","url":null,"abstract":"The Mandible can be damaged by pathological factors, tumors, trauma, infection, and needs a surgical operation for reconstruction and restoring function. There are different methods for the reconstruction of mandible. Based on the surgical approach, primary reconstruction of mandible by reconstruction plate after resection is necessary for maintaining mandibular symmetric and esthetic of the lower third of the face. A finite element model of mandible and masticatory muscles was produced from a normal person (male with 35-year-old). The normal model was resected from the left sixth tooth to the second tooth. The pathological model was reconstructed in different conditions by macro plate. Different conditions were analyzed and compared based on bite force on right fifth tooth, stress developed on screws and macro plate. The finite element analysis results showed that maximum bite force and lower stress on screws were seen in the pathological model (condition 5) when one macro plate and six screws were inserted in the mid-body. The findings showed that the use of two macro plates causes lower stress on it than when we use one. Use of one macro plate and six screws is the best choice in mandibular immobilization which decrease the stress applied on bone and increase the bite force. Because of less stress developed on macro plates and screws, use of two macro plates or one macro plate in mid-body area are also preferred.","PeriodicalId":20666,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine","volume":" ","pages":"423-429"},"PeriodicalIF":1.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139983656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

RETRACTED: Optimal skin cancer detection by a combined ENN and Fractional Order Coot Optimization Algorithm. 回收通知：采用 ENN 和分数阶 Coot 优化算法优化皮肤癌检测。

IF 1.7 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2023-01-18 DOI: 10.1177/09544119221147106

引用次数: 0

Pedicle screw pull-out testing in polyurethane foam blocks: Effect of block orientation and density. 聚氨酯泡沫块中的椎弓根螺钉拔出测试：泡沫块方向和密度的影响

IF 1.8 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2024-03-13 DOI: 10.1177/09544119241236873

Stephen Bennie, James Douglas Crowley, Tian Wang, Matthew Henry Pelletier, William Robert Walsh

{"title":"Pedicle screw pull-out testing in polyurethane foam blocks: Effect of block orientation and density.","authors":"Stephen Bennie, James Douglas Crowley, Tian Wang, Matthew Henry Pelletier, William Robert Walsh","doi":"10.1177/09544119241236873","DOIUrl":"10.1177/09544119241236873","url":null,"abstract":"Synthetic bone models such as polyurethane (PU) foam are a well-established substitute to cadaveric bone for screw pull-out testing; however, little attention has been given to the effect of PU foam anisotropy on orthopaedic implant testing. Compressive and screw pull-out performance in three PU foam densities; 0.16 g/cm3 (PCF 10), 0.32 g/cm3 (PCF 20) and 0.64 g/cm3 (PCF 40) were performed in each of the X, Y or Z orientations. The maximum compressive force, stiffness in the linear region, maximum stress and modulus were determined for all compression tests. Pedicle screws were inserted and pulled out axially to determine maximum pull-out force, energy to failure and stiffness. One-way ANOVA and post hoc tests were used to compare outcome variables between PU foam densities and orientations, respectively. Compression tests demonstrated the maximum force was significantly different between all orientations for PCF 20 (X, Y and Z) while stiffness and maximum stress were different between X versus Y and X versus Z. Maximum pull-out force was significantly different between all orientations for PCF 10 foam. No significant differences were noted for other foam densities. There is potential for screw pull-out testing results to be significantly affected by orientation in lower density PU foams. It is recommended that a single, known orientation of the PU foam block be used for experimental testing.","PeriodicalId":20666,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine","volume":" ","pages":"455-460"},"PeriodicalIF":1.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140120481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

RETRACTED: Optimal skin cancer detection by a combined ENN and Fractional Order Coot Optimization Algorithm. 撤回：用ENN和分数阶Coot优化算法优化皮肤癌检测。

IF 1.7 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2022-07-24 DOI: 10.1177/09544119221113180

Lina Xu, Yujuan Si, Zhiqiang Guo, Dmitry Bokov

引用次数: 0

RETRACTED: Brain tumor diagnosis from MRI based on Amended Water Strider Algorithm. 撤回：基于修正水黾算法的磁共振成像脑肿瘤诊断。

IF 1.7 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2022-09-29 DOI: 10.1177/09544119221122028

Ming Hu, Yingying Guo, Yu Qi, Jiazhi Cui, Zhuming Cheng, Homayoun Ebrahimian

引用次数: 0

RETRACTED: Lung cancer diagnosis of CT images using metaheuristics and deep learning. 使用元启发式和深度学习的CT图像的癌症诊断。

IF 1.7 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2022-04-21 DOI: 10.1177/09544119221090725

Qiufang Ma, Giorgos Jimenez

引用次数: 0

Statistical analysis of VEXLPE wear against alumina produced by a new 200-station, multidirectional pin-on-disk device. 对新型 200 工位多向盘上销装置产生的 VEXLPE 对氧化铝的磨损进行统计分析。

IF 1.8 4区医学

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-04-01 Epub Date: 2024-03-05 DOI: 10.1177/09544119241235789

Vesa Saikko

{"title":"Statistical analysis of VEXLPE wear against alumina produced by a new 200-station, multidirectional pin-on-disk device.","authors":"Vesa Saikko","doi":"10.1177/09544119241235789","DOIUrl":"10.1177/09544119241235789","url":null,"abstract":"With low wear rates shown by contemporary bearing materials of total hip prostheses, the standard deviation of wear rate is relatively high. Therefore, large sample sizes are needed for an adequate power of test. Because wear tests take a long time, it is practical to test several samples simultaneously. A new high-capacity, multidirectional wear test device, called the SuperCTPOD-200, was introduced. A 3 million-cycle wear test with an unprecedented sample size of 200 was performed for VEXLPE. The duration of the test was 6 weeks. The wear factor was normally distributed with a mean ± SD of 1.64 × 10-7 mm3/Nm ± 0.22 × 10-7 mm3/Nm (n = 200). The observation that SD was 13.1% of the mean can be useful in power analyses of future tests with other highly cross-linked polyethylenes. Burnishing was the most typical feature on the worn pins, which was in agreement with clinical findings on retrieved acetabular liners. The present study emphasizes statistics that often plays a minor role only in wear studies.","PeriodicalId":20666,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine","volume":" ","pages":"438-443"},"PeriodicalIF":1.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140028743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0