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Pedicle screw pull-out testing in polyurethane foam blocks: Effect of block orientation and density Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-03-14 Stephen Bennie, James Douglas Crowley, Tian Wang, Matthew Henry Pelletier, William Robert Walsh
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
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Overloading effect on the osmo-viscoelastic and recovery behavior of the intervertebral disc Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-03-14 Faten Feki, Rym Taktak, Nader Haddar, Melissa Moulart, Fahmi Zaïri, Fahed Zaïri
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
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Statistical analysis of VEXLPE wear against alumina produced by a new 200-station, multidirectional pin-on-disk device Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-03-05 Vesa Saikko
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
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In-vitro external fixation pin-site model proof of concept: A novel approach to studying wound healing in transcutaneous implants Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-03-04 Blake McCall, Karan Rana, Kate Sugden, Sarah Junaid
External fixation is an essential surgical technique for treating trauma, limb lengthening and deformity correction, however infection is common, with infection rates ranging from 4.5 to 100% of cases. Throughout the literature researchers and clinicians have highlighted a relationship between excessive movement of the pin and skin and an increase in the patient’s risk of infection, however, currently
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A scoring system to evaluate stability of percutaneous osseointegrated implants for transfemoral amputation with validation in the ITAP clinical trial Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-02-28 Kirstin Ahmed, Gordon William Blunn
Percutaneous osseointegrated implants for individuals with lower limb amputation can increase mobility, reduce socket related pain, and improve quality of life. It would be useful to have an evaluation method to assess the interface between bone and implant. We assessed outpatient radiographs from the Intraosseous Transcutaneous Amputation Prosthesis clinical trial using an interface scoring system
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Review of non-penetrating ballistic testing techniques for protection assessment: From biological data to numerical and physical surrogates Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-02-28 Martin Chaufer, Rémi Delille, Benjamin Bourel, Christophe Maréchal, Franck Lauro, Olivier Mauzac, Sébastien Roth
Human surrogates have long been employed to simulate human behaviour, beginning in the automotive industry and now widely used throughout the safety framework to estimate human injury during and after accidents and impacts. In the specific context of blunt ballistics, various methods have been developed to investigate wound injuries, including tissue simulants such as clays or gelatine ballistic, physical
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The comparison between various methods of mandibular reconstruction based on finite element analysis Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-02-28 Mehdi Parvan, Mohammad Saleh Khaghaninejad, Mohammad Taghi Karimi
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
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Scapular muscle dynamic stiffness of asymptomatic subjects and subjects with chronic shoulder pain, at rest and isometric contraction conditions Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-02-26 Ana SC Melo, Bárbara Montóia, Eduardo B Cruz, J Paulo Vilas-Boas, Andreia SP Sousa
Muscle stiffness had a crucial role in joint stability, particularly, at the shoulder complex. Although changes in upper trapezius muscle stiffness have been described for shoulder pain, contradictory findings have been obtained. Also, existing data regarding scapular muscles are, majorly, about trapezius. Myotonometry is a method used to assess stiffness; however, the reliability values of scapular
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Significantly better precision with new machine learning versus manual image registration software in processing images from single-plane fluoroscopy to determine tibiofemoral kinematics following total knee replacement Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-02-20 Joseph Pourtabib, Maury L. Hull
One common method to determine tibiofemoral kinematics following total knee replacement (TKR) is to capture single-plane fluoroscopic images of a patient activity and determine anterior-posterior (AP) positions of the femoral condyles and internal-external (IE) tibial rotation. Although JointTrack is widely used to analyze such images, precision (i.e. repeatability) in determining AP positions and
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Biomechanical analysis of combi-hole locking compression plate during fracture healing: A numerical study of screw configuration Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-02-19 Zeyang Li, Stuart Pollard, Gemma Smith, Subodh Deshmukh, Ziyun Ding
Locking compression plates (LCPs) have become a widely used option for treating femur bone fractures. However, the optimal screw configuration with combi-holes remains a subject of debate. The study aims to create a time-dependent finite element (FE) model to assess the impacts of different screw configurations on LCP fixation stiffness and healing efficiency across four healing stages during a complete
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Classification of cognitive impairment using electroencephalography for clinical inspection Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-02-17 Karuppathal Easwaran, Kalpana Ramakrishnan, Senthil Nathan Jeyabal
Impairment in cognitive skill though set-in due to various diseases, its progress is based on neuronal degeneration. In general, cognitive impairment (CI) is divided into three stages: mild, moderate and severe. Quantification of CI is important for deciding/changing therapy. Attempted in this work is to quantify electroencephalograph (EEG) signal and group it into four classes (controls and three
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Deep learning-based tooth segmentation methods in medical imaging: A review Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-02-05 Xiaokang Chen, Nan Ma, Tongkai Xu, Cheng Xu
Deep learning approaches for tooth segmentation employ convolutional neural networks (CNNs) or Transformers to derive tooth feature maps from extensive training datasets. Tooth segmentation serves as a critical prerequisite for clinical dental analysis and surgical procedures, enabling dentists to comprehensively assess oral conditions and subsequently diagnose pathologies. Over the past decade, deep
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Tibial fractures treated with mono-lateral fixation: Principles of design and application Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-02-05 Peter Jan Ogrodnik, Peter Brian MacFarlane Thomas, Alexander Collingwood
This paper presents the outcome of a data review of patients treated with the IOS external fixation system at the Royal Stoke University Hospital: a fixation designed to meet four requirements for external fixation proposed in this paper. Demographic data and outcome were collected and assessed. From 69 initial patients, 64 patients (55 males and 9 females) had an average age of 35.9 years. The mean
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Regional differences in electroactive response of the sclera Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-31 Hamed Hatami-Marbini, Jafar Arash Mehr
The sclera exhibits mechanical response when subjected to an external electric stimulation. The scleral electroactive response is a function of its charge density, mechanical properties, thickness, and strength of the applied electric voltage. The primary objective of the present work was to investigate the regional differences in the electroactive response of porcine sclera. To this end, we cut scleral
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Analysis of microvascular pattern in diabetes mellitus condition using the nailfold capillaroscopy images Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-27 Sowmiya Elumalai, Nirmala Krishnamoorthi, Naveen Periyasamy, Mohamed Farazullah, Kiran Raj, Shriraam Mahadevan
Diabetes is often considered a vascular disease due to its impact on blood vessels, it is a complex condition with various metabolic and autoimmune factors involved. One of the long term comorbidities of diabetes includes microvascular complications. The microvascular complications can be analyzed using the Nailfold capillaroscopy, a non-invasive technique that allows for the visualization and analysis
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Assessment of 3D printed mechanical metamaterials for prosthetic liners Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-27 Kirstie M Devin, Jinghua Tang, Andrew R Hamilton, David Moser, Liudi Jiang
This study focuses on novel design and evaluation of Elastic 50A (EL50) mechanical metamaterials with open-cell patterns for its potential application to lower limb residuum/socket interfaces, specifically that of a transtibial (TT) amputee. Mechanical characteristics, that is, effective Young’s modulus ( E), was tuned by altering metamaterial porosity, which was experimentally verified. Specifically
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Simulating whole-body vibration for neonatal patients on a tire-coupled road simulator Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-25 Patrick Kehoe, Keely Gibb, Jason Hurley, Robert G Langlois, James R Green, Adrian DC Chan, Elton Toma, Cheryl Aubertin, Kim Greenwood, Andrew Ibey, Stephanie Redpath
Exposure to excessive whole-body vibration is linked to health issues and may result in increased rates of mortality and morbidity in infants. Newborn infants requiring specialized treatment at neonatal intensive care units often require transportation by road ambulance to specialized care centers, exposing the infants to potentially harmful vibration and noise. A standardized Neonatal Patient Transport
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Virtual registration of comminuted bone fracture and preoperative assessment of reconstructed bone model using the Procrustes algorithm based on CT dataset Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-19 Senthilmurugan Arumugam, Rajesh Ranganathan, Venkatesh Kumar Narayanasamy
A research work was undergone in a virtual bone reduction process for reconstruction of the comminuted pelvic bone fracture using a CT scan dataset of patients. This includes segmentation, 3D model optimization and bone registration technique. The accuracy of the reconstructed bone model was validated using Finite Element Method. Analysed and applied various segmentation techniques to segregate the
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On the soft tissue ultrasound elastography using FEM based inversion approach Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-19 Seyed Shahab Eshaghinia, Afshin Taghvaeipour, Mohammad Mohammadi Aghdam, Hassan Rivaz
Elastography is a medical imaging modality that enables visualization of tissue stiffness. It involves quasi-static or harmonic mechanical stimulation of the tissue to generate a displacement field which is used as input in an inversion algorithm to reconstruct tissue elastic modulus. This paper considers quasi-static stimulation and presents a novel inversion technique for elastic modulus reconstruction
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Risk factors for periprosthetic femoral fracture risk around a cemented polished taper-slip stem using an osteoporotic composite bone model Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-18 Sameer Jain, Jonathan N Lamb, Ruth Drake, Ian Entwistle, James P Baren, Zachary Thompson, Andrew R Beadling, Michael G Bryant, Farag Shuweihdi, Hemant Pandit
This biomechanical study aimed to determine if variations in stem material, stem geometry, stem offset and cement viscosity affect mechanical resistance to postoperative periprosthetic fracture (PFF) after hip arthroplasty with a commonly used cemented polished taper-slip (PTS) stem (CPT, Zimmer Biomet) in a novel osteoporotic composite femoral bone model. Thirty-six osteoporotic composite femoral
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Finite element model with realistic bone geometries for the optimal design of internal fixation during the fibula healing process Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-18 Yafeng Li, Peng Yi, Zichun Zou, Fengyuan Lu, Xi Zhang, Jing Zhang
A finite element model with realistic bone geometries is developed to design optimal internal fixation during the fibula healing process in this study. The effect of bone plate parameters on fibula fracture healing is studied. The relationship between differences in plate length, thickness and working length, and bone healing performance is focused. The optimal combination form of the bone plate parameters
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Simple recognition of hand gestures using single-channel EMG signals Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-18 Mina Pourmokhtari, Borhan Beigzadeh
Electromyography (EMG) signals are used for many different purposes, such as recording and measuring the electrical activity generated by varying the body’s skeletal muscles. Biosignals are different types of biomedical signals, like EMG signals, which can be used for the neural linkage with computers and are obtained from a particular part of the body such as tissue, muscle, organ, or cell system
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Evaluation of the lumbar and abdominal muscles behavior in different sagittal plane angles during maximum voluntary isometric extension Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-17 Sharareh Kian-Bostanabad, Mahmoodreza Azghani, Mohammad Parnianpour
Physical positions and lumbar movements are directly related to lumbar disorders. It is known that the sagittal plane angle affects the person’s ability to apply extension torque. However, there is no consensus on whether or not muscle activity and co-contractions change at these angles. This paper aimed to investigate the abdominal and lumbar muscles’ behavior at different sagittal plane angles during
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Incorporating patient-specific hip orientation from weightbearing computed tomography affects discrete element analysis-computed regional joint contact mechanics in individuals treated with periacetabular osteotomy for hip dysplasia Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-17 Dominic JL Rivas, Holly D Aitken, Kevin N Dibbern, Michael C Willey, Robert W Westermann, Jessica E Goetz
Computational models of the hip often omit patient-specific functional orientation when placing imaging-derived bony geometry into anatomic landmark-based coordinate systems for application of joint loading schemes. The purpose of this study was to determine if this omission meaningfully alters computed contact mechanics. Discrete element analysis models were created from non-weightbearing (NWB) clinical
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Numerical simulation and experimental testing for static failure prediction in additively manufactured below-knee prosthetic sockets Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-12 Kavuri Karthik Rajashekar, Srinivasa Prakash Regalla, Kurra Suresh, Prakash Narayan Shrivastava
The socket of a transtibial prosthesis is a structural part customized to a patient’s amputated residual lower limb. The free-form geometry of the socket can be suitable for additive manufacturing (AM) to save time and cost. However, the mechanical fracture of additively manufactured lower limb prostheses is not yet fully understood. A novel experimental method and numerical approach by finite element
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Comparative study of two retrograde locked intramedullary nail designs for ankle arthrodesis: A finite element analysis Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-09 Víctor Manuel Araujo-Monsalvo, María Fernanda Toledo-Romo, Germán Aníbal Rodríguez-Castro, Jesús Vázquez-Escamilla, Víctor Manuel Domínguez-Hernández, Alfonso Meneses-Amador, Juan Ricardo Cortés-García, Elisa Martínez-Coria
Ankle arthrodesis is the gold standard for treatment of end-stage arthritis. The goal of ankle arthrodesis is to obtain bony union between the tibia and the talus. Retrograde intramedullary nailing is typically reserved for ankle and subtalar joints arthrodesis. The purpose of this study is to evaluate the effect of two different materials, two locking pin configurations and two nail designs of a retrograde
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Hand assistive device with suction cup (HADS) technology for poststroke patients Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-08 Porkodi Jayavel, Varshini Karthik, Jaison Jacob Mathunny, Suresh Jothi, Ashokkumar Devaraj
A stroke is a neurological disease that primarily causes paralysis. Besides paraplegia, all other types of paralysis affect the upper extremity. Advanced technologies, such as wearable devices and rehabilitation regimens, are also being developed to enhance the functional ability of a stroke person to grasp and release daily living objects. In this research, we developed a rehabilitation functional
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Mechanical and fatigue resistance of restorations supported by welded-framework and realized using computer-aided designed prosthetic shells: In vitro pilot study Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2024-01-08 Alberto Maria Albiero, Lorenzo Bevilacqua, Federica Pegoraro, Gianluca Turco, Stefano Momic, Roberto Di Lenarda, Michele Maglione
Resin coating in implants rehabilitation cannot always be aesthetic, durable and comfortable for the patient mainly due to the limited dimensions of the final structure. Intraoral welding technique and computer-aided designed prosthetic shells may be a solution. This in vitro study evaluates the capacity of load and the weakest point of implant-supported provisional prosthesis using welded titanium
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A wearable system to assist impaired-neck patients: Design and evaluation. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-29 Ali Ghasemi,Majid Sadedel,Majid Mohammadi Moghaddam
Patients with neurological disorders, such as amyotrophic lateral sclerosis, Parkinson's disease, and cerebral palsy, often face challenges due to head-neck immobility. The conventional treatment approach involves using a neck collar to maintain an upright head position, but this can be cumbersome and restricts head-neck movements over prolonged periods. This study introduces a wearable robot capable
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Novel bone cement based on calcium phosphate composited CNT curcumin with improved strength and antitumor properties. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-29 Wei Zhao,Huiming Zhang,Jigang Ma,Yanjie Li,Zheng Liu,Shujing Zhou,Ying Wang,Jie Zhang
In this study, carboxylated carbon nanotube (CNT)-loaded curcumin (CUR) was blended into calcium phosphate cement (CPC) owing to the poor mechanical properties and single function of CPC as a bone-filling material, and CNT-CUR-CPC with improved strength and antitumor properties was obtained. The failure strength, hydrophilicity, in vitro bioactivity, bacteriostatic activity, antitumor activity, and
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Degree of conversion and physicomechanical properties of newly developed flowable composite derived from rice husk using urethane dimethacrylate monomer. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-28 Nor Ain Fatihah Azlisham,Yanti Johari,Dasmawati Mohamad,Mohd Firdaus Yhaya,Zuliani Mahmood
This study evaluated the use of urethane dimethacrylate (UDMA) as a base monomer to prepare the newly developed flowable composite (FC) using nanohybrid silica derived from rice husk in comparison to bisphenol A-glycidyl methacrylate (Bis-GMA) on the degree of conversion and physicomechanical properties. The different loadings of base monomer to diluent monomer were used at the ratio of 40:60, 50:50
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Three-dimensional analysis of reconstructed skulls using three different open-source software versus commercial software. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-22 Johari Yap Abdullah,Abdul Manaf Abdullah,Syafawati Zaim,Helmi Hadi,Adam Husein,Zainul Ahmad Rajion,Jafri Malin Abdullah
This study aimed to compare the 3D skull models reconstructed from computed tomography (CT) images using three different open-source software with a commercial software as a reference. The commercial Mimics v17.0 software was used to reconstruct the 3D skull models from 58 subjects. Next, two open-source software, MITK Workbench 2016.11, 3D Slicer 4.8.1 and InVesalius 3.1 were used to reconstruct the
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Computational simulation of applying mechanical vibration to mesenchymal stem cell for mechanical modulation toward bone tissue engineering. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-20 Mohammadreza Mohseni,Bahman Vahidi,Hamidreza Azizi
Evaluation of cell response to mechanical stimuli at in vitro conditions is known as one of the important issues for modulating cell behavior. Mechanical stimuli, including mechanical vibration and oscillatory fluid flow, act as important biophysical signals for the mechanical modulation of stem cells. In the present study, mesenchymal stem cell (MSC) consists of cytoplasm, nucleus, actin, and microtubule
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Electrogastrography in patients with gastric motility disorders. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-20 Abdullah Al Kafee,Yusuf Kayar
Electrogastrography (EGG) is a novel diagnostic modality for assessing the gastrointestinal tract (GI) that generates spontaneous electrical activity and monitors gastric motility. The aim of this study was to compare patients with functional dyspepsia (FD) and diabetic gastroparesis (D-GP) with healthy controls (CT) to use established findings on abnormalities of gastric motility based on EGG characteristics
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Optimum design of the geometry of boots and socks with the aim of minimum weight and preventing frostbite. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-20 Ali Nikbakht,Hossein Ahmadikia
In order to design shoes suitable for cold environments, knowledge of the thermal conditions inside the shoes and the variables affecting those conditions is necessary. A two-dimensional model of a boot and sock was developed to investigate the effect of the materials and dimensions of various parts of shoes and to design geometry for them to prevent foot frostbite. The optimization algorithm was used
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Impact forces in backward falls: Subject-specific video-based rigid body simulation of backward falls. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-16 Fatemeh Khorami,Numaira Obaid,Tim Bhatnagar,Ahmed Ayoub,Steve N Robinovitch,Carolyn J Sparrey
A critical missing component in the study of real-world falls is the ability to accurately determine impact forces resulting from the fall. Subject-specific rigid body dynamic (RBD) models calibrated to video captured falls can quantify impact forces and provide additional insights into injury risk factors. RBD models were developed based on five backward falls captured on surveillance video in long-term
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Study on damage of the macrostructure of the cochlea under the impact load. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-13 Jiakun Wang,Junyi Liang,Lei Gao,Wenjuan Yao
Due to the tiny and delicate structure of the cochlea, the auditory system is the most sensitive to explosion impact damage. After being damaged by the explosion impact wave, it usually causes long-term deafness, tinnitus, and other symptoms. To better understand the influence of impact load on the cochlea and basilar membrane (BM), a three-dimensional (3D) fluid-solid coupling finite element model
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In-silico study of type 'B' condylar head fractures and evaluating the influence of two positional screw distance in two-screw osteosynthesis construct. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-04 Anik Banerjee,Masud Rana,Arindam Chakraborty,Jayanta Kumar Biswas,Amit Roy Chowdhury
Clinical fixation screws are common in clinical practices to fix mandibular condyle fractures. Evidence suggests significance of 'working length' that is, distance between proximal and distal fixation screws in proximity to the fracture in orthopaedic implant design. In pursuit of stable implant-bone construct, this study aims to investigate the biomechanical performance of each configuration considered
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Co-electrospun PCL-collagen nanofibers containing saffron-synthesized gold nanoparticles as an antioxidant wound dressing. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-03 Parisa Javadi,Mohammad Ali Derakhshan,Fatemeh Asghari,Sharmin Kharrazi,Reza Faridi-Majidi
Oxidant environment and inflammation are the leading cause of chronic wounds such as diabetic ulcers. A dressing containing antioxidants would ensure accelerated wound healing. In this study, electrospun gold nanoparticle (GNP)-embedded nanofibers were developed. GNPs (about 7 nm) were synthesized using saffron extract as a reducing and capping agent (GNP-EXT). For comparison, nanoparticles of the
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Multi-objective optimization of cortical bone grinding parameters based on particle swarm optimization. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-03 Qingchun Zheng,Yuying Zhu,Zhenhao Fan,Daohan Wang,Chunqiu Zhang,Shuhong Liu,Yahui Hu,Weihua Fu
Grinding is a fundamental operation in craniotomy. Suitable grinding parameters will not only reduce force damage, but also ensure grinding efficiency. In this study, the regression equations of material removal rate and grinding force were obtained based on the theory of cortical bone grinding and full factorial test results, a multi-objective optimization based on the particle swarm algorithm was
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Detecting early-stage Parkinson's disease from gait data. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-11-02 Parvathy Nair,Maryam Shojaei Baghini,Gita Pendharkar,Hoam Chung
Parkinson's disease is a chronic and progressive neurodegenerative disorder with an estimated 10 million people worldwide living with PD. Since early signs are benign, many patients go undiagnosed until the symptoms get severe and the treatment becomes more difficult. The symptoms start intermittently and gradually become continuous as the disease progresses. In order to detect and classify these minute
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A survival prediction model based on PCA-HSIDA-LSSVM for patients with esophageal squamous cell carcinoma. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-10-25 Yanfeng Wang,Yuhang Xia,Dan Ling,Junwei Sun,Yan Wang
Esophageal squamous cell carcinoma (ESCC) is a type of cancer and has some of the highest rates of both incidence and mortality globally. Developing accurate models for survival prediction provides a basis clinical judgment and decision making, improving the survival status of ESCC patients. Although many predictive models have been developed, there is still lack of highly accurate survival prediction
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A two-stage prediction filling method with support vector technologies optimized competitively in stages by grey wolf optimizer and particle swarm optimization for missing fasting blood glucose. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-10-24 Wenlong Gao,Jingxiang Xie,Yongsong Ke,Maoyun Tian,Zhimei Zeng,Xiaojie Ma,Minqian Zhi
Missing values often affect the data utilization in epidemiological survey. In this study, according to the cut-off point value of the medical diagnostic standard of fasting blood glucose for diabetes, we divide fasting blood glucose test data from the China Health and Nutrition Survey (CHNS) of Shandong province in 2009 into two classes: the normal and the abnormal. Accordingly, for missing fasting
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Assessment of the elastic stiffness of human cardiac fibres after an apical infarction using finite element simulation. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-10-21 Jacobo Córdova-Aquino,Hugo I Medellín-Castillo
Several research works in the literature have focused on understanding the post-infarction ventricular remodelling phenomenon, but few works have considered the evaluation of the elastic behaviour of the cardiac tissue after a myocardial infarction. This paper presents an investigation focused on predicting the elastic performance of the human heart after a left ventricular apical infarction. The aim
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In vitro evaluation of temperature change on the root surface after the removal of root canal filling. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-10-20 Muhammed Kagan Bas,Parla Meva Durmazpinar,Fatima Betul Basturk,Hesna Sazak Ovecoglu
This study aimed to compare the temperature changes occurring on the root surfaces after the removal of root canal filling with two different root canal sealers by two different reciprocating files. Sixty extracted teeth with a single root and canal were used in this study. After chemomechanical preparation, the root canals in the experimental groups were filled with gutta-percha and AH Plus or CeraSeal
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Fluid-structure interaction and structural simulation of high acceleration effects on surgical repaired human mitral valve biomechanics. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-10-17 Omid Khalili,Masoud Asgari
Mitral valve dynamics depend on force stability in the mitral leaflets, the mitral annulus, the chordae tendineae, and the papillary muscles. In chordal rupture conditions, the proper function of the valve disrupts, causing mitral regurgitation, the most prevalent valvular disease. In this study, Structural and FSI frameworks were employed to study valve dynamics in healthy, pathologic, and repaired
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Medical device regulatory challenges in the UK are affecting innovation and its potential benefits. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-10-15 Jacqueline Beddoe-Rosendo,Clare L Heaysman,Joseph V Hajnal,Sebastien Ourselin,Anne Vanhoestenberghe
The increase in regulatory challenges on medical technology developed and deployed in the UK is having a negative impact on innovation. In this paper we show how the limited capacity of Approved and Notified Bodies is one more barrier in the innovation pipeline, that could push more teams to consider applying for FDA approval instead of UKCA marking, potentially limiting how much our patients benefit
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Skin lesion classification using HG-PSO and YOLOv7 based convolutional network in real time. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-10-15 Hera Shaheen,Maheshwari Prasad Singh
Skin cancer is a chronic illness seen visually and further diagnosed with a dermoscopic examination. It is crucial to precisely localize and classify lesions from dermoscopic images to diagnose and treat skin cancers as soon as possible. This work presents melanoma identification, and the classification method significantly improves accuracy and precision. This work proposes a method Hybrid of Genetic
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Laser textured Ti-6Al-7Nb alloy for biomedical applications: An investigation of texturing parameters on surface properties. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-09-30 Sertan Ozan,Abdurrahman Bilgin,Şefika Kasman
Surface texturing with a laser beam is an effective method for engraving on the surface of biomaterials. The four laser texturing parameters (scan speed, frequency, fill spacing, and pulse width) having five different values were associated with five different scanning strategies (scan direction), and a total of 25 texturing conditions were tested on the Ti-6Al-7Nb alloy surface. The surface roughness
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Effect of GO content on microstructure and mechanical properties of Ti6Al4V coating reinforced artificial joint. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-09-30 Yuling Gong,Chen Cui,Meiping Wu,Rui He,Dadong Jie,Xiaojin Miao
In this study, we have innovatively proposed a method of in-situ synthesized TiC hard phase to improve the surface mechanical properties of artificial joint materials (Ti6Al4V). In order to explore the optimum graphene oxide (GO) addition, GO/Ti6Al4V composite powders with different proportions (0, 0.5, 1.0, and 1.5 wt.%) were prepared. The homogeneously dispersed GO/Ti6Al4V composite powder was prepared
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Mechanisms of mobile bearing dislocation in lateral unicompartmental knee replacement. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-09-30 Irene Yang,Greta Agustoni,David W Murray,Stephen J Mellon
Mobile bearing dislocation occurs in 1- 6% of Oxford Domed Lateral replacements. Dislocations are predominantly medial, but can occur anteriorly or posteriorly. They tend to occur when the knee is flexed. It is not clear how dislocations can be prevented. A previously described mechanical rig for assessing mobile bearing dislocation was updated so as to study dislocation with the knee in flexion. Sub-categories
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Pre-clinical characterization of a novel flexible surface stem design for total knee replacements. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-09-25 Jan-Oliver Sass,Jessica Hembus,Erik Fuhrmann,Danny Vogel,Eckhard Bauer,Helmut Detlef Link,Rainer Bader
Primary stability is crucial for implant osseointegration and the long-term stability of cementless total joint replacements. Biomechanical studies have shown the potential of femoral stems for total knee replacements to reduce micromotions at the bone-implant interface. However, approaches such as focusing on the structural elasticity of the femoral stems are rarely described. Three groups with different
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Research on an ankle rehabilitation robot for hemiplegic patients after stroke. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-09-14 Zhengdi Sun,Anle Mu,Chunbao Wang,Quanquan Liu,Fuxiang Hao,Jianjun Wei,Wei Li
This paper proposes an ankle rehabilitation robot to assist hemiplegic patients with movement training. The robot consists of two symmetric mechanisms, allowing stroke survivors to execute ankle rehabilitation training based on physiological differences. LPMS-B sensors measure the range of movement (ROM) of the human ankle joint, and the results are used for control parameters of the robot. Control
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Thoughts and perspectives on biomechanical numerical models under impacts: Are women forgotten from research? Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-09-13 Sebastien Roth
The present paper explores a series of articles in the literature which deal with impact biomechanics of the head and thorax/abdomen segments, investigating the "sex specific properties/data" used in the studies. Statements in these studies are analyzed and point out, the use of male or female subjects for the developments of finite element models and their validation against experimental data. The
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Health prediction of reciprocating endodontic instrument based on the machine learning and exponential degradation models. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-09-05 Vinod Singh Thakur,Pavan Kumar Kankar,Anand Parey,Arpit Jain,Prashant Kumar Jain
This study proposes an intelligent health prediction and fault prognosis of the endodontic file during the root canal treatment. Root canal treatment is the procedure of disinfecting the infected pulp through the canal with the help of an endodontic instrument. Force signals are acquired with the help of a dynamometer during the canal preparation, and statistical features are extracted. The extracted
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An evolutionary model for sleep quality analytics using fuzzy system. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-09-05 Shivalila Hangaragi,Neelima Nizampatnam,Deepa Kaliyaperumal,Tolga Özer
Electroencephalography (EEG) is a neuro signal reflecting brain activity. These signals provide information about brain activity, eye movements, and muscle tone, which can be used to determine the sleep stage. Categorizing sleep stages can be done manually by visually. Alternatively, automated algorithms can be developed using machine learning techniques to classify sleep stages based on signal features
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Stress-strain and fatigue life numerical evaluation of two different dental implants considering isotropic and anisotropic human jaw. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-09-05 Marco De Stefano,Antonio Lanza,Ludovico Sbordone,Alessandro Ruggiero
Dental prostheses are currently a valid solution for replacing potential missing tooth or edentulism clinical condition. Nevertheless, the oral cavity is a dynamic and complex system: occlusal loads, external agents, or other unpleasant events can impact on implants functionality and stability causing a future revision surgery. One of the failure origins is certainly the dynamic loading originated
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Research priorities for diagnostic instrumentation in urinary incontinence. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-09-05 Andrew Gammie,Stefan De Wachter
The International Consultation on Incontinence (ICI) captures current evidence on incontinence. The conference 'Incontinence: The Engineering Challenge XIII' in November 2021 heard an update on the most recent ICI summary on urodynamic testing. This paper summarises the ICI recommendations for future research in urodynamics, with a view to informing engineers of issues and challenges that could benefit
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Holistically sustainable continence care: A working definition, the case of single-used absorbent hygiene products (AHPs) and the need for ecosystems thinking. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-09-01 Tiina Vaittinen,Krista Koljonen,Susanna Tella,Eveliina Asikainen,Katri Laatikainen
Incontinence is a common health issue that affects hundreds of millions of people across the world. The solution is often to manage the condition with different kinds of single-use continence technologies, such as incontinence pads and other absorbent hygiene products (AHPs). Throughout their life cycle, these fossil-based products form a remarkable yet inadequately addressed ecological burden in society
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The visual perception of wetness: Multisensory integration of visual and tactile stimuli. Proc. Inst. Mech. Eng. Part H J. Mech. Eng. Med. (IF 1.8) Pub Date : 2023-08-24 Charlotte Merrick,Rodrigo Rosati,Davide Filingeri
A multitude of sensory modalities are involved in humans' experience of wetness, yet we know little of the integratory role of vision. Therefore, the aim was to quantify the effect of physical stain volume, chroma and size on wetness perception, and to compare wetness perception under different sensory conditions, including visuotactile and visual only interactions. Eighteen participants visually observed