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Applied Bionics and Biomechanics

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https://www.readbyqxmd.com/read/28819344/positioning-performance-of-power-and-manual-drivers-in-posterior-spinal-fusion-procedures
#1
J Micah Prendergast, Alexander C Perry, Vikas V Patel, Emily M Lindley, Mark E Rentschler
This work presents an analysis and comparison of the efficacy of two methods for pedicle screw placement during posterior spinal fusion surgery. A total of 100 screws (64 manual and 36 power driven), all placed utilizing a surgical navigation system, were analyzed and compared. Final screw placement was compared to initial surgical plans using the navigation system, and the final screw locations were analyzed on the basis of angular deviation from these planned trajectories as well as screw translation within a critical reference plane...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28811739/a-fem-experimental-approach-for-the-development-of-a-conceptual-linear-actuator-based-on-tendril-s-free-coiling
#2
Luca Cortese, Selena Milanovic, Renato Vidoni
Within the vastness of the plant species, certain living systems show tendril structures whose motion is of particular interest for biomimetic engineers. Tendrils sense and coil around suitable grips, and by shortening in length, they erect the remaining plant body. To achieve contraction, tendrils rotate along their main axis and shift from a linear to a double-spring geometry. This phenomenon is denoted as the free-coiling phase. In this work, with the aim of understanding the fundamentals of the mechanics behind the free coiling, a reverse-engineering approach based on the finite element method was firstly applied...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28790799/bilateral-misalignment-compensating-full-dof-hip-exoskeleton-design-and-kinematic-validation
#3
Karen Junius, Marc Degelaen, Nina Lefeber, Eva Swinnen, Bram Vanderborght, Dirk Lefeber
A shared design goal for most robotic lower limb exoskeletons is to reduce the metabolic cost of locomotion for the user. Despite this, only a limited amount of devices was able to actually reduce user metabolic consumption. Preservation of the natural motion kinematics was defined as an important requirement for a device to be metabolically beneficial. This requires the inclusion of all human degrees of freedom (DOF) in a design, as well as perfect alignment of the rotation axes. As perfect alignment is impossible, compensation for misalignment effects should be provided...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28785159/structural-geometric-functionalization-of-the-additively-manufactured-prototype-of-biomimetic-multispiked-connecting-ti-alloy-scaffold-for-entirely-noncemented-resurfacing-arthroplasty-endoprostheses
#4
Ryszard Uklejewski, Mariusz Winiecki, Piotr Rogala, Adam Patalas
The multispiked connecting scaffold (MSC-Scaffold) prototype, inspired by the biological system of anchorage of the articular cartilage in the periarticular trabecular bone by means of subchondral bone interdigitations, is the essential innovation in fixation of the bone in resurfacing arthroplasty (RA) endoprostheses. The biomimetic MSC-Scaffold, due to its complex geometric structure, can be manufactured only using additive technology, for example, selective laser melting (SLM). The major purpose of this work is determination of constructional possibilities for the structural-geometric functionalization of SLM-manufactured MSC-Scaffold prototype, compensating the reduced ability-due to the SLM technological limitations-to accommodate the ingrowing bone filling the interspike space of the prototype, which is important for the prototype bioengineering design...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28757796/bionic-design-for-reducing-adhesive-resistance-of-the-ridger-inspired-by-a-boar-s-head
#5
Jianqiao Li, Yunpeng Yan, Benard Chirende, Xuejiao Wu, Zhaoliang Wang, Meng Zou
The main feature of the boar's head used to root around for food is the front part, which is similar to the ridger in terms of function, load, and environment. In this paper, the boar's head was selected as the biological prototype for developing a new ridger. The point cloud of the head was captured by a 3D scanner, and then, the head surface was reconstructed using 3D coordinates. The characteristic curves of the front part of the boar's head were extracted, and then, five cross-sectional curves and one vertical section curve were fitted...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28757795/a-new-model-to-study-fatigue-in-dental-implants-based-on-probabilistic-finite-elements-and-cumulative-damage-model
#6
María Prados-Privado, José Antonio Bea, Rosa Rojo, Sérgio A Gehrke, José Luis Calvo-Guirado, Juan Carlos Prados-Frutos
The aim of this study was to predict the fatigue life of two different connections of a dental implant as in load transfer to bone. Two three-dimensional models were created and assembled. All models were subjected to a natural masticatory force of 118 N in the angle of 75° to the occlusal plane. All degrees of freedom in the inferior border of the cortical bone were restrained, and the mesial and distal borders of the end of the bone section were constrained. Fatigue material data and loads were assumed as random variables...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28706440/reliability-of-an-integrated-ultrasound-and-stereophotogrammetric-system-for-lower-limb-anatomical-characterisation
#7
Frederick Greatrex, Erica Montefiori, Thomas Grupp, Josef Kozak, Claudia Mazzà
BACKGROUND: Lower extremity analysis for preoperative total knee and hip arthroplasty routines can increase surgery success rate and hence reduce associated costs. Current tools are limited by being invasive, limited to supine analysis, or too expensive. This study aimed to propose and validate a device, OrthoPilot®, based on the combined use of a stereophotogrammetric and ultrasound system which can in vivo and noninvasively measure varus/valgus, flexion/extension, femur and tibia torsion, and femur and tibia lengths...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28694684/comparison-of-joint-loading-in-badminton-lunging-between-professional-and-amateur-badminton-players
#8
Lin Fu, Feng Ren, Julien S Baker
The knee and ankle are the two most injured joints associated with the sport of badminton. This study evaluates biomechanical factors between professional and amateur badminton players using an injury mechanism model. The aim of this study was to investigate the kinematic motion and kinetic loading differences of the right knee and ankle while performing a maximal right lunge. Amateur players exhibited greater ankle range of motion (p < 0.05, r = 0.89) and inversion joint moment (p < 0.05, r = 0.54) in the frontal plane as well as greater internal joint rotation moment (p < 0...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28684897/influence-of-cleats-surface-interaction-on-the-performance-and-risk-of-injury-in-soccer-a-systematic-review
#9
REVIEW
Diogo C F Silva, Rubim Santos, João Paulo Vilas-Boas, Rui Macedo, António Mesquita Montes, Andreia S P Sousa
OBJECTIVE: To review the influence of cleats-surface interaction on the performance and risk of injury in soccer athletes. DESIGN: Systematic review. DATA SOURCES: Scopus, Web of science, PubMed, and B-on. ELIGIBILITY CRITERIA: Full experimental and original papers, written in English that studied the influence of soccer cleats on sports performance and injury risk in artificial or natural grass. RESULTS: Twenty-three articles were included in this review: nine related to performance and fourteen to injury risk...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28659710/fluid-shear-stress-and-fibroblast-growth-factor-2-increase-endothelial-cell-associated-vitronectin
#10
Justin G Mathew, Sarah Basehore, Alisa Morss Clyne
Vitronectin is a matricellular protein that plays an important role in both coagulation and angiogenesis through its effects on cell adhesion and the plasminogen system. Vitronectin is known to bind to endothelial cells upon integrin activation. However, the effect of integrin activation by shear stress and growth factors on cell-associated vitronectin and plasminogen system activity has not yet been studied. We therefore exposed human umbilical vein endothelial cells to steady laminar flow, oscillating disturbed flow, or fibroblast growth factor-2 (FGF-2) for 24 hours...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28630564/cathrob-a-highly-compact-and-versatile-remote-catheter-navigation-system
#11
Laura Cercenelli, Barbara Bortolani, Emanuela Marcelli
Several remote catheter navigation systems have been developed and are now commercially available. However, these systems typically require specialized catheters or equipment, as well as time-consuming operations for the system set-up. In this paper, we present CathROB, a highly compact and versatile robotic system for remote navigation of standard tip-steerable electrophysiology (EP) catheters. Key features of CathROB include an extremely compact design that minimizes encumbrance and time for system set-up in a standard cath lab, a force-sensing mechanism, an intuitive command interface, and functions for automatic catheter navigation and repositioning...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28584518/an-investigation-into-a-gear-based-knee-joint-designed-for-lower-limb-prosthesis
#12
M S H Bhuiyan, I A Choudhury, M Dahari, Y Nukman, S Z Dawal
A gear-based knee joint is designed to improve the performance of mechanical-type above-knee prostheses. The gear set with the help of some bracing, and bracket arrangement, is used to enable the prosthesis to follow the residual limb movement. The motion analysis and finite-element analysis (FEA) of knee joint components are carried out to assess the feasibility of the design. The maximum stress of 29.74 MPa and maximum strain of 2.393e-004 are obtained in the gear, whereas the maximum displacement of 7...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28555091/gravity-compensation-and-feedback-of-ground-reaction-forces-for-biped-balance-control
#13
Satoshi Ito, Shingo Nishio, Yuuki Fukumoto, Kojiro Matsushita, Minoru Sasaki
This paper considers the balance control of a biped robot under a constant external force or on a sloped ground. We have proposed a control method with feedback of the ground reaction forces and have realized adaptive posture changes that ensure the stability of the robot. However, fast responses have not been obtained because effective control is achieved by an integral feedback that accompanies a time delay necessary for error accumulation. To improve this response, here, we introduce gravity compensation in a feedforward manner...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28546738/kinematic-and-electromyographic-activity-changes-during-back-squat-with-submaximal-and-maximal-loading
#14
Hasan U Yavuz, Deniz Erdag
The aim of this study was to investigate the possible kinematic and muscular activity changes with maximal loading during squat maneuver. Fourteen healthy male individuals, who were experienced at performing squats, participated in this study. Each subject performed squats with 80%, 90%, and 100% of the previously established 1 repetition maximum (1RM). Electromyographic (EMG) activities were measured for the vastus lateralis, vastus medialis, rectus femoris, semitendinosus, biceps femoris, gluteus maximus, and erector spinae by using an 8-channel dual-mode portable EMG and physiological signal data acquisition system (Myomonitor IV, Delsys Inc...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28487622/an-ultrasound-imaging-guided-robotic-hifu-ablation-experimental-system-and-accuracy-evaluations
#15
Chih Yu An, Jia Hao Syu, Ching Shiow Tseng, Chih-Ju Chang
In recent years, noninvasive thermal treatment by using high-intensity focused ultrasound (HIFU) has high potential in tumor treatment. The goal of this research is to develop an ultrasound imaging-guided robotic HIFU ablation system for tumor treatment. The system integrates the technologies of ultrasound image-assisted guidance, robotic positioning control, and HIFU treatment planning. With the assistance of ultrasound image guidance technology, the tumor size and location can be determined from ultrasound images as well as the robotic arm can be controlled to position the HIFU transducer to focus on the target tumor...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28487621/effect-of-drop-foot-on-spatiotemporal-kinematic-and-kinetic-parameters-during-gait
#16
Ida Wiszomirska, Michalina Błażkiewicz, Katarzyna Kaczmarczyk, Grażyna Brzuszkiewicz-Kuźmicka, Andrzej Wit
Background. The complexity of the structure and function of a living body can be affected by disorders and can cause various dysfunctions. Objective. The aim of this study was to determine compensatory mechanisms in subjects with drop foot during gait. Methods. The study evaluated 10 subjects with drop foot (DF) whose results were compared to a group of 10 healthy controls (C). Spatiotemporal, kinematic, and kinetic parameters during the gait cycle were collected using Vicon system synchronized with Kistler platforms...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28487620/kinematics-of-the-normal-knee-during-dynamic-activities-a-synthesis-of-data-from-intracortical-pins-and-biplane-imaging
#17
Xavier Gasparutto, Florent Moissenet, Yoann Lafon, Laurence Chèze, Raphaël Dumas
Few studies have provided in vivo tibiofemoral kinematics of the normal knee during dynamic weight-bearing activities. Indeed, gold standard measurement methods (i.e., intracortical pins and biplane imaging) raise ethical and experimental issues. Moreover, the conventions used for the processing of the kinematics show large inconsistencies. This study aims at synthesising the tibiofemoral kinematics measured with gold standard measurement methods. Published kinematic data were transformed in the standard recommended by the International Society of Biomechanics (ISB), and a clustering method was applied to investigate whether the couplings between the degrees of freedom (DoFs) are consistent among the different activities and measurement methods...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28465660/the-effect-of-body-mass-on-the-shoe-athlete-interaction
#18
A Tsouknidas, M Pantazopoulos, D Sagris, D Fasnakis, S Maropoulos, F Arabatzi, N Michailidis
Long-distance running is known to induce joint overloading and elevate cytokine levels, which are the hallmarks for a variety of running-related injuries. To address this, footwear systems incorporate cushioning midsoles to mitigate injurious mechanical loading. The aim of this study was to evaluate the effect of athlete body mass on the cushioning capacity of technical footwear. An artificial heel was prototyped to fit the impact pattern of a heel-strike runner and used to measure shock attenuation by an automated drop test...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28348501/an-investigation-into-the-relation-between-the-technique-of-movement-and-overload-in-step-aerobics
#19
Alicja Rutkowska-Kucharska, Katarzyna Wysocka, Sławomir Winiarski, Agnieszka Szpala, Małgorzata Sobera
The aim of this research was to determine the features of a step workout technique which may be related to motor system overloading in step aerobics. Subjects participating in the research were instructors (n = 15) and students (n = 15) without any prior experience in step aerobics. Kinematic and kinetic data was collected with the use of the BTS SMART system comprised of 6 calibrated video cameras and two Kistler force plates. The subjects' task was to perform basic steps. The following variables were analyzed: vertical, anteroposterior, and mediolateral ground reaction forces; foot flexion and abduction and adduction angles; knee joint flexion angle; and trunk flexion angle in the sagittal plane...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28260849/effects-of-gait-speed-of-femoroacetabular-joint-forces
#20
Joshua T Weinhandl, Bobbie S Irmischer, Zachary A Sievert
Alterations in hip joint loading have been associated with diseases such as arthritis and osteoporosis. Understanding the relationship between gait speed and hip joint loading in healthy hips may illuminate changes in gait mechanics as walking speed deviates from preferred. The purpose of this study was to quantify hip joint loading during the gait cycle and identify differences with varying speed using musculoskeletal modeling. Ten, healthy, physically active individuals performed walking trials at their preferred speed, 10% faster, and 10% slower...
2017: Applied Bionics and Biomechanics
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