Renato Natal Jorge
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View article: SAT-076 Dual Pituitary Adenomas in an Acromegalic Patient: Diagnostic and Therapeutic Considerations
SAT-076 Dual Pituitary Adenomas in an Acromegalic Patient: Diagnostic and Therapeutic Considerations Open
Disclosure: B.A. Galizzi: None. M.D. Nascimento: None. R. Natal: None. S. Borigato: None. L.G. Freitas: None. B.S. Soares: None. J.B. Drummond: None. Introduction: Pituitary adenomas are common neuroendocrine tumors, but dual adenomas are …
View article: In silico testing of a multimaterial scaffold for mandibular reconstruction
In silico testing of a multimaterial scaffold for mandibular reconstruction Open
Introduction Mandibular reconstruction following segmental resection is a challenging procedure. The implantation of scaffolds as an alternative for microsurgical free flaps appears as a promising strategy; however, there is still a lack o…
View article: Computational modeling of vacuum-assisted delivery: biomechanics of maternal soft tissues
Computational modeling of vacuum-assisted delivery: biomechanics of maternal soft tissues Open
Childbirth is a complex process influenced by physiological, mechanical, and hormonal factors. While natural vaginal delivery is the safest, it is not always feasible due to diverse circumstances. In such cases, assisted delivery technique…
View article: Angiogenesis Dynamics: A Computational Model of Intravascular Flow Within a Structural Adaptive Vascular Network
Angiogenesis Dynamics: A Computational Model of Intravascular Flow Within a Structural Adaptive Vascular Network Open
Background: Understanding vascular development and the key factors involved in regulating angiogenesis—the growth of new blood vessels from pre-existing vasculature—is crucial for developing therapeutic approaches to promote wound healing.…
View article: Contributing factors to preterm pre-labor rupture of the fetal membrane: Biomechanical analysis of the membrane under different physiological conditions
Contributing factors to preterm pre-labor rupture of the fetal membrane: Biomechanical analysis of the membrane under different physiological conditions Open
The fetal membranes are a complex biological structure essential for pregnancy, comprising two main layers: the amnion and the chorion. Characterizing each layer from a mechanical perspective is extremely important to understand the ruptur…
View article: Biomechanics of a Novel 3D Mandibular Osteotomy Design
Biomechanics of a Novel 3D Mandibular Osteotomy Design Open
Elective mandibular surgical osteotomies are commonly used to correct craniofacial discrepancies. Since the modifications proposed by Obwegeser, Dal Pont, and Hunsuck, no effective variations have been proposed to improve the biomechanical…
View article: Pregnancy state before the onset of labor: a holistic mechanical perspective
Pregnancy state before the onset of labor: a holistic mechanical perspective Open
Successful pregnancy highly depends on the complex interaction between the uterine body, cervix, and fetal membrane. This interaction is synchronized, usually following a specific sequence in normal vaginal deliveries: (1) cervical ripenin…
View article: Computational Insights into the Interplay of Mechanical Forces in Angiogenesis
Computational Insights into the Interplay of Mechanical Forces in Angiogenesis Open
This study employs a meshless computational model to investigate the impacts of compression and traction on angiogenesis, exploring their effects on vascular endothelial growth factor (VEGF) diffusion and subsequent capillary network forma…
View article: A finite element-based machine learning framework to predict the mechanical behavior of the pelvic floor muscles during childbirth
A finite element-based machine learning framework to predict the mechanical behavior of the pelvic floor muscles during childbirth Open
The medical community has been focusing on gaining a deeper understanding of birth trauma, which affects millions of women worldwide. Maternal lesions can be challenging to diagnose and expensive to examine. To better comprehend the mechan…
View article: A Numerical Analysis of the Influence of Oxygen and Glucose in Healthy and Tumour Cells
A Numerical Analysis of the Influence of Oxygen and Glucose in Healthy and Tumour Cells Open
Cancer is widely regarded as a critical health issue in modern society. Tumour cells are usually associated with abnormal proliferation that disrupts the normal behaviour of the body. All cells depend on the availability of oxygen and nutr…
View article: Developing a Biomechanical Model to Study OASIS
Developing a Biomechanical Model to Study OASIS Open
Childbirth-related injuries, such as perineal lacerations and Obstetric Anal Sphincter Injuries (OASIS), can lead to maternal complications. Finite element (FE) models have been used to study childbirth biomechanics, but these models often…
View article: Pregnancy Stage Before the Onset of Labor: A Holistic Mechanical Perspective
Pregnancy Stage Before the Onset of Labor: A Holistic Mechanical Perspective Open
View article: Development of a multilayer fetal membrane material model calibrated using bulge inflation mechanical tests
Development of a multilayer fetal membrane material model calibrated using bulge inflation mechanical tests Open
View article: A Comprehensive Look at In Vitro Angiogenesis Image Analysis Software
A Comprehensive Look at In Vitro Angiogenesis Image Analysis Software Open
One of the complex challenges faced presently by tissue engineering (TE) is the development of vascularized constructs that accurately mimic the extracellular matrix (ECM) of native tissue in which they are inserted to promote vessel growt…
View article: Static in bone implants: standard steady-state torque and primary stability in a bioactive kinetic screw
Static in bone implants: standard steady-state torque and primary stability in a bioactive kinetic screw Open
Establishing a standard measurement for drilling and screwing bone implants in different amounts and qualities of bone tissue, in a simple and adequate way to control and predict results, is the gold standard for successful primary stabili…
View article: Consistent C-bar radial-basis Galerkin method for finite strain analysis
Consistent C-bar radial-basis Galerkin method for finite strain analysis Open
For finite-strain problems of quasi-incompressible materials, with hyperelastic and hyperelasto-plastic behavior, we develop a mixed polynomial-enriched radial-basis function (RBF) interpolation. It is characterized by decoupling quadratur…
View article: A biomechanical perspective on perineal injuries during childbirth
A biomechanical perspective on perineal injuries during childbirth Open
View article: A New Collector Device for the Immediate Use of Particulate Autogenous Bone Grafts
A New Collector Device for the Immediate Use of Particulate Autogenous Bone Grafts Open
Autogenous bone grafts can be harvested from either intraoral or extraoral sources. Intra-oral sources include healing tooth extraction wounds, a bone from edentulous ridges, bone trephined from within the jaw using trephine drills, bone f…
View article: Multiscale Homogenization Techniques for TPMS Foam Material for Biomedical Structural Applications
Multiscale Homogenization Techniques for TPMS Foam Material for Biomedical Structural Applications Open
Multiscale techniques, namely homogenization, result in significant computational time savings in the analysis of complex structures such as lattice structures, as in many cases it is inefficient to model a periodic structure in full detai…
View article: A New Simplified Autogenous Sinus Lift Technique
A New Simplified Autogenous Sinus Lift Technique Open
Oral maxillofacial rehabilitation of the atrophic maxilla with or without pneumatization of the maxillary sinuses routinely presents limited bone availability. This indicates the need for vertical and horizontal bone augmentation. The stan…
View article: Immediate Autogenous Bone Transplantation Using a Novel Kinetic Bioactive Screw 3D Design as a Dental Implant
Immediate Autogenous Bone Transplantation Using a Novel Kinetic Bioactive Screw 3D Design as a Dental Implant Open
The restoration of osseous defects is accomplished by bone grafts and bone substitutes, which are also called biomaterials. Autogenous grafts, which are derived from the same individual, can retain the viability of cells, mainly the osteob…
View article: Revisiting the Role of Knee External Rotation in Non-Contact ACL Mechanism of Injury
Revisiting the Role of Knee External Rotation in Non-Contact ACL Mechanism of Injury Open
An anterior cruciate ligament (ACL) tear is a severe sports injury that often occurs in young athletes. Besides the strong cumulative evidence on noncontact ACL tears, the injury mechanism (especially the contribution of external rotation)…
View article: Bio-lubricant Properties Analysis of Drilling an Innovative Design of Bioactive Kinetic Screw into Bone
Bio-lubricant Properties Analysis of Drilling an Innovative Design of Bioactive Kinetic Screw into Bone Open
Biotribology is applied to study the friction, wear, and lubrication of biological systems or natural phenomena under relative motion in the human body. It is a multidisciplinary field and tribological processes impact all aspects of our d…
View article: Numerical Study of Tympanosclerosis Including Its Effect on Human Hearing
Numerical Study of Tympanosclerosis Including Its Effect on Human Hearing Open
Tympanosclerosis is an abnormal disorder of the middle ear or only the eardrum (i.e., myringosclerosis) in which there are calcium deposits. Normally, it is caused by recurrent middle ear infections. In this work, a 3D finite element model…
View article: Bladder Wall Stiffness after Cystectomy in Bladder Cancer Patients: A Preliminary Study
Bladder Wall Stiffness after Cystectomy in Bladder Cancer Patients: A Preliminary Study Open
Bladder cancer (BlCa), specifically urothelial carcinomas, is a heterogeneous disease that derives from the urothelial lining. Two main classes of BlCa are acknowledged: the non-muscle invasive BlCa and the muscle-invasive BlCa; the latter…
View article: An Estimation of the Biomechanical Properties of the Continent and Incontinent Woman Bladder Via Inverse Finite Element Analysis
An Estimation of the Biomechanical Properties of the Continent and Incontinent Woman Bladder Via Inverse Finite Element Analysis Open
View article: Bending analysis of antisymmetric angle-ply laminates using HSDTs and the radial point interpolation method – Part I: Literature review and formulation
Bending analysis of antisymmetric angle-ply laminates using HSDTs and the radial point interpolation method – Part I: Literature review and formulation Open
The mechanics of laminated plates is primarily studied using the Finite Element Method (FEM), which is often combined with plate models. Those plate models can be High-Order Shear Deformation Theories (HSDTs) since they accurately pred…
View article: An elastoplastic constitutive model to simulate the non-linear behaviour of chitosan material for nerve regeneration guide tubes applications
An elastoplastic constitutive model to simulate the non-linear behaviour of chitosan material for nerve regeneration guide tubes applications Open
Neurotmesis is the most severe injury a peripheral nerve can endure. One of the strategies to treat this type of nerve injury is the tubulization technique, consisting of bridging the two nerve tips enclosed by a tube made of a compatible …
View article: Bending analysis of antisymmetric angle-ply laminates using HSDTs and the radial point interpolation method – Part II: numerical examples
Bending analysis of antisymmetric angle-ply laminates using HSDTs and the radial point interpolation method – Part II: numerical examples Open
This work makes use of the Radial Point Interpolation Method (RPIM) and five different High-Order Shear Deformation Theories (HSDTs), to analyse several antisymmetric angle-ply composite laminated plates. The RPIM’s formulation and the…
View article: Structural analysis of the new Bioactive Kinetic Screw in titanium alloy vs. commercially pure titanium
Structural analysis of the new Bioactive Kinetic Screw in titanium alloy vs. commercially pure titanium Open
This study presents the structural and static analysis of the new Bioactive Kinetic Screw (BKS) using the finite element method (FEM). The FEM was conducted to predict three-dimensional (3D) simulations according to a cutting torque ap…