Abstract:
:Even though bariatric surgery is one of the most effective treatment option of obesity, post-surgical weight loss is not always ensured, especially in the long term, when many patients experience weight regain. Bariatric procedures are largely based on surgeon's expertise and intra-operative decisions, while an integrated in-silico approach could support surgical activity. The effects of bariatric surgery on gastric distension, which activates the neural circuitry promoting satiety, can be considered one of the main factors in the operation success. This aspect can be investigated trough computational modelling based on the mechanical properties of stomach tissues and structure. Mechanical tests on gastric tissues and structure from people with obesity are carried out, as basis for the development of a computational model. The samples are obtained from stomach residuals explanted during laparoscopic sleeve gastrectomy interventions. Uniaxial tensile and stress relaxation tests are performed in different directions and inflation tests are carried out on the entire stomach residual. Experimental results show anisotropic, non-linear elastic and time-dependent behavior. In addition, the mechanical properties demonstrate to be dependent on the sample location within the stomach. Inflation tests confirm the characteristics of time-dependence and non-linear elasticity of the stomach wall. Experimental activities developed provide a unique set of data about the mechanical behavior of the stomach of patients with obesity, considering both tissues and structure. This data set can be adopted for the development of computational models of the stomach, as support to the rational investigation of biomechanical aspects of bariatric surgery.
journal_name
J Mech Behav Biomed Materauthors
Carniel EL,Albanese A,Fontanella CG,Pavan PG,Prevedello L,Salmaso C,Todros S,Toniolo I,Foletto Mdoi
10.1016/j.jmbbm.2020.103883subject
Has Abstractpub_date
2020-10-01 00:00:00pages
103883eissn
1751-6161issn
1878-0180pii
S1751-6161(20)30437-9journal_volume
110pub_type
杂志文章abstract::The surface of commercially pure Ti (cp-Ti) substrate was grit-blasted with Al(2)O(3) powders and then wet-blasted with HAp/Ti mixed powders at room temperature. Then plasma spraying with Ti powders or HAp/Ti mixed powders on the blasted surface was carried out to form a bond coat layer, denoted as T50 and T100 bond c...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2008.11.001
更新日期:2009-10-01 00:00:00
abstract::Previous physiological experiments and finite element modelling indicate that inter-synergistic epimuscular myofascial force transmission (EMFT) between co-activated muscles has a potential to affect healthy muscle's contribution to joint moment and joint range of movement. This is quite relevant for patients with cer...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2017.08.040
更新日期:2018-01-01 00:00:00
abstract::Poly(vinyl) alcohol hydrogel (PVA) is a well-known polymer widely used in the medical field due to its biocompatibility properties and easy manufacturing. In this work, the tribo-mechanical properties of PVA-based blocks are studied to evaluate their suitability as a part of a structure simulating the length scale dep...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2016.05.001
更新日期:2016-09-01 00:00:00
abstract::This study evaluated the effect of air-particle abrasion protocols on the biaxial flexural strength, surface characteristics and phase transformation of zirconia after cyclic loading. Disc-shaped zirconia specimens (Ø: 15mm, thickness: 1.2mm) (N=32) were submitted to one of the air-particle abrasion protocols (n=8 per...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2013.01.005
更新日期:2013-04-01 00:00:00
abstract::Muscle fiber direction strain provides invaluable information for characterizing muscle function. However, methods to study this for human muscles in vivo are lacking. Using magnetic resonance (MR) imaging based deformation analyses and diffusion tensor (DT) imaging based tractography combined, we aimed to assess musc...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2016.06.031
更新日期:2016-10-01 00:00:00
abstract::Fish scales from modern teleost fish are high-performance materials made of cross-plies of collagen type I fibrils reinforced with hydroxyapatite. Recent studies on this material have demonstrated the remarkable performance of this material in tension and against sharp puncture. Although it is known that teleost fish ...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2014.09.025
更新日期:2015-12-01 00:00:00
abstract::Tissue nonlinearity is conventionally measured in shear wave elastography by studying the change in wave speed caused by the tissue deformation, generally known as the acoustoelastic effect. However, these measurements have mainly focused on the excitation and detection of one specific shear mode, while it is theoreti...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2020.103754
更新日期:2020-07-01 00:00:00
abstract::Nickel and carbides free Co-28Cr-6Mo alloy was fabricated by combination of mechanical alloying and warm pressing. The microstructure, mechanical properties, pin-on-disk dry sliding wear and corrosion behavior in simulated physiological solution were investigated. The produced Co-28Cr-6Mo alloy has elongated ultra-fin...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2015.12.039
更新日期:2016-07-01 00:00:00
abstract::After fractures, bone can experience different potential outcomes: successful bone consolidation, non-union and bone failure. Although, there are a lot of factors that influence fracture healing, experimental studies have shown that the interfragmentary movement (IFM) is one of the main regulators for the course of bo...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2013.09.023
更新日期:2014-01-01 00:00:00
abstract::Droplet processing technologies and many biological processes use disk-like or hemispherical shapes for construction or the design of surfaces. The ability to tune the characteristics and properties of a surface is important at the micro- and nano-scale. The influence of size on the mechanical properties is presently ...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2012.07.014
更新日期:2012-12-01 00:00:00
abstract:PURPOSE:To compare osseointegration and implant stability of two types of laser-etched (LE) Ti implants with a chemically-modified, sandblasted, large-grit and acid-etched (SLA) Ti implant (SLActive(®), Straumann, Basel, Switzerland), by evaluating removal torque and resonance frequency between the implant surface and ...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2016.03.034
更新日期:2016-08-01 00:00:00
abstract::The orthopedic application of Zn is limited owing to the poor strength and low plasticity. In this study, a novel strategy by combining rapid solidification obtained by selective laser melting (SLM) and alloying with Mg was proposed to improve the mechanical properties of Zn. The microstructures, mechanical properties...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2018.03.018
更新日期:2018-06-01 00:00:00
abstract::The present study has two major purposes: firstly, to investigate whether the analytical model proposed by Jedwab and Clerc for assessing the mechanical behaviour of an open ends metallic braided stent is applicable to the looped ends stent design and secondly, to compare the response of the two stent designs subjecte...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2017.08.025
更新日期:2017-11-01 00:00:00
abstract::An adaptive finite element simulation was developed to predict fretting wear in a head-neck taper junction of hip joint implant through a two dimensional (2D) model and based on the Archard wear equation. This model represents the most critical section of the head-neck junction which was identified from a 3D model of ...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2017.07.003
更新日期:2017-11-01 00:00:00
abstract::The aim of this study was to evaluate if mechanical cycling influences bioactivity and bond strength of resin-dentine interface after bonding with Zn-doped self-etching adhesives. Sound dentine surfaces were bonded with Clearfil SE Bond (SEB), 10 wt% ZnO microparticles or 2 wt% ZnCl2 were added into the SEB primer (P)...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2015.05.026
更新日期:2015-10-01 00:00:00
abstract::In the study, the microstructure, mechanical property and metal release behavior of selective laser melted CoCrW alloys under different solution treatment conditions were systemically investigated to assess their potential use in orthopedic implants. The effects of the solution treatment on the microstructure, mechani...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2015.10.019
更新日期:2015-03-01 00:00:00
abstract::Although great progresses in the fracture mechanisms and deformation behaviors of cortical bones have been achieved, the effective methods to predict the surface fracture path of cortical bones are still difficult. By using depth-sensing nanoindentation measurement technique, the hardness distribution map of cortical ...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2020.104303
更新日期:2021-01-20 00:00:00
abstract::Biochemical signals related to a mechanosensory mechanism by which cells sense mechanical stimuli have been gradually clarified by biological approaches such as blocking specific signaling pathways; however, mechanical signals such as deformation/strain, which is transduced into biochemical signals through this mechan...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2007.06.003
更新日期:2008-01-01 00:00:00
abstract::An experimental simulation study is made to determine the effects of occlusal wear on the capacity of teeth to resist fracture. Tests are carried out on model dome structures, using glass shells to represent enamel and epoxy filler to represent dentin. The top of the domes are ground and polished to produce flat surfa...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2011.08.028
更新日期:2012-01-01 00:00:00
abstract::Breast implant durability and the mechanisms of rupture are important topics in the medical community, for patients, manufactures and regulatory medical agencies. After concerns about the Poly Implant Prosthesis (PIP) implants, the need for understanding the adverse outcomes and the failure mode to improve the breast ...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2017.04.005
更新日期:2017-08-01 00:00:00
abstract::Porous scaffolds of Ti-6Al-4V were produced by mixing of this alloy with different amount of magnesium (Mg) powders. The mixtures were compacted in steel die by applying uniaxial pressure of 500 MPa before sintering the compacts in sealed quartz tubes at 900 °C for 2 h. Employing Archimedes׳ principle and Image Tool s...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2015.04.015
更新日期:2015-08-01 00:00:00
abstract::The current study is part of an ongoing research program to develop an advanced new carbon fiber/flax/epoxy (CF/flax/epoxy) hybrid composite with a “sandwich structure” as a substitute for metallic materials for orthopedic long bone fracture plate applications. The purpose of this study was to assess the fatigue prope...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:
更新日期:2014-07-01 00:00:00
abstract::Single-cell technologies are powerful tools to evaluate cell characteristics. In particular, Atomic Force Microscopy (AFM) nanoindentation experiments have been widely used to study single cell mechanical properties. One important aspect related to single cell techniques is the need for sufficient statistical power to...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2019.03.018
更新日期:2019-06-01 00:00:00
abstract:AIM OF THE STUDY:The aim of this study was to evaluate the effect of solvent/disinfectant ethanol on the surface of denture base polymers. Changes in surface roughness, topography and some nanomechanical properties were assessed by SEM and nanoindentation plotted against different concentrations of ethanol on heat cure...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2015.09.007
更新日期:2016-02-01 00:00:00
abstract::Current guidelines for abdominal aortic aneurysm (AAA) repair are primarily based on the maximum diameter. Since these methods lack robustness in decision making, new image-based methods for mechanical characterization have been proposed. Recently, time-resolved 3D ultrasound (4D US) in combination with finite element...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2019.103571
更新日期:2020-03-01 00:00:00
abstract::Study of the properties of natural biomaterials provides a reliable experimental basis for the design of biomimetic materials. The mechanical properties and impact wear behaviors of turtle shell with different soaking time were investigated on a micro-amplitude impact wear tester. The damage behavior of turtle shells ...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2017.11.007
更新日期:2018-02-01 00:00:00
abstract:PURPOSE:Limited information is available on the effect of Immediate Dentin Sealing (IDS) on the fracture strength of indirect partial posterior restorations. This study evaluated the effect of IDS on the fracture strength and failure types of two indirect restorative materials. MATERIALS AND METHODS:Standard MOD inlay...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2017.04.002
更新日期:2017-08-01 00:00:00
abstract::The incorporation of functional monomers and proteolytic inhibitors into adhesive systems have shown to be promising strategies to improve the longevity of adhesive restorations. The aim of this study was to evaluate the long-term bonding performance and anti-gelatinolytic effect of a 10-MDP-based universal adhesive s...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2020.103925
更新日期:2020-10-01 00:00:00
abstract::Many treatments for cardiovascular diseases include an endovascular insertion of stents or stent grafts into arteries, a procedure which may cause high tissue stresses and even damage in the arterial wall. In order to study such problems by using finite element methods, both appropriate constitutive models and experim...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2012.03.012
更新日期:2012-08-01 00:00:00
abstract::Alterations in mechanical loading can induce growth and remodeling in soft connective tissues. Numerous studies have measured changes in the collagen structure and mechanical properties of cellularized native and engineered tissues in response to cyclic mechanical loading. However, a recent experimental study demonstr...
journal_title:Journal of the mechanical behavior of biomedical materials
pub_type: 杂志文章
doi:10.1016/j.jmbbm.2018.03.027
更新日期:2018-06-01 00:00:00