Article
Biotechnology & Applied Microbiology
Anqi Xue, Zuming Mao, Xiaoyu Zhu, Qiang Yang, Peichen Wang, Zimu Mao, Mingze Du, Xu Ma, Dong Jiang, Yubo Fan, Feng Zhao
Summary: This study aimed to investigate the biomechanical effects of horizontal meniscal tears and different resection strategies on a rabbit knee joint using finite element analysis. The results showed that the horizontal meniscal tears had little biomechanical impact on the rabbit knee joint, and some of the partial meniscectomy strategies also had minimal effect on joint stress. It is recommended to preserve the posterior root and the remaining peripheral edge of the meniscus during surgery for a horizontal meniscal tear.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Polymer Science
Yuchen Liu, Ming Fang, Ruifeng Zhao, Hengyan Liu, Min Tian, Sheng Zhong, Shizhu Bai
Summary: This study evaluated the effect of periodontal splints made from different materials on stress distributions in compromised periodontal tissues and cement layers. Using a computer simulation of mastication, it was found that the use of splints effectively distributed loads and reduced stress. Splinting materials with low elastic moduli reduced stress concentration at the connectors, but increased tensile stress in the cement layer.
Article
Polymer Science
Larissa Mendes Campaner, Marcos Paulo Motta Silveira, Guilherme Schmitt de Andrade, Alexandre Luiz Souto Borges, Marco Antonio Bottino, Amanda Maria de Oliveira Dal Piva, Roberto Lo Giudice, Pietro Ausiello, Joao Paulo Mendes Tribst
Summary: This study evaluated the biomechanical behavior of different interim restorative materials for posterior fixed partial dentures, with resin composite attenuating stress on the cement layer and acrylic resin attenuating stress on the connector region.
Review
Computer Science, Interdisciplinary Applications
Wenqing Wei, Tianyuan Zhang, Zifang Huang, Junlin Yang
Summary: This article reviews the use of finite element analysis (FEA) in assisting brace treatment for adolescent idiopathic scoliosis (AIS). It discusses the technical choices encountered during the construction of the finite element model (FEM) and explores the different fields and limitations of FEA. The article also collects observation items based on FEA and provides guidance and directions to improve brace treatment.
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING
(2022)
Article
Engineering, Mechanical
Fuhao Mo, Yuandong Li, Junjie Li, Shuangyuan Zhou, Zurong Yang
Summary: This study established a three-dimensional foot-ankle model and investigated its suitability for analyzing foot-ankle biomechanical responses. Two personalization methods were compared, using magnetic resonance imaging (MRI) and fast optical scan data, respectively, to analyze the dynamic gait responses. The results showed good correlation with subject-specific experimental results, indicating the effectiveness of the model in analyzing subject-specific foot deformation behavior during dynamic gait loading.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Biomedical
Luca Salvadori Ferre, Felipe Goncalves Di Nisio, Celso Junio Aguiar Mendonca, Ivan Moura Belo
Summary: This study presents a comparative finite element analysis of two different fixation methods for treating high-energy tibial plateau fractures, LC-DCP and LCP, and finds that osteosynthesis with LCP achieves better results with reduced independent motion of bone fragments at the fracture site, as predicted in literature.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Review
Biotechnology & Applied Microbiology
Ruofan Wang, Zenghui Wu
Summary: Finite element analysis (FEA) is a widely used tool that has contributed to a better understanding of the spine and its behavior, as well as assisting in the design and application of spinal interbody cages (ICs). FEA allows for thorough testing of new designs before manufacturing, examining biomechanical responses and spinal fusion processes that cannot easily be experimented upon in vivo. This paper reviews the recent progress of FEA in spinal ICs over the last six years and discusses its limitations and future advancements.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Francois Zot, Estelle Ben-Brahim, Mathieu Severyns, Yann Ledoux, Michel Mesnard, Laetitia Caille, Cecile Swennen, Simon Teyssedou, Abdollah-Yassine Moufid, Arnaud Germaneau, Tanguy Vendeuvre
Summary: Lumbar disc arthroplasty is a surgical procedure used to treat degenerative disc disease. This study compared the mechanical response of ball-and-socket and elastic prostheses using finite element models.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Computer Science, Interdisciplinary Applications
DaiZhu Yuan, ZhanYu Wu, Long Yang, Qiang Zou, DaWei Hua, ZiHao Zou, Chuan Ye
Summary: This study investigated the effects of different core decompression drilling locations and diameters on mechanical stability using finite element analysis. It was found that femoral stiffness decreased with increasing drilling diameters, while maximum equivalent stress increased. A safe drilling parameter range suitable for most patients was proposed.
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
(2022)
Article
Biophysics
Yi-jun Zhang, Yan Guo, Xiao Long, Jing-yu Du, Tao Liu, Xiang-jin Lin
Summary: This study utilized a 3-Dimensional finite element foot model to investigate the role of soft tissue stress in flexible flatfoot, finding that the plantar fascia plays a crucial role in maintaining the medial longitudinal arch. The equivalent stress in the arch increases with plantar fascia attenuation, indicating its importance in arch support.
BIOMECHANICS AND MODELING IN MECHANOBIOLOGY
(2021)
Article
Chemistry, Physical
Sergio Giner, Jose F. Bartolome, Pablo Gomez-Cogolludo, Carlos Castellote, Guillermo Pradies
Summary: The mechanical behavior of zirconia abutments and monolithic all-ceramic restorations connected to titanium implants with different internal connection designs were evaluated in this study, showing that the internal conical connection of zirconia abutments had higher mechanical performance. Furthermore, the choice of materials for chairside CAD/CAM monolithic restorations had similar effects on mechanical fracture and fatigue resistance. Stress distribution was found to be influenced by the connection design within the implant/restoration complex.
Article
Clinical Neurology
Amin Joukar, Jwalant Mehta, Vijay K. Goel, David S. Marks
Summary: This study evaluated the mechanical effectiveness of tuning fork plate fixation system compared to dual iliac screw fixation through finite element analysis. The results showed that both fixation systems had similar motion reduction at spine levels, but the stress values were higher in the dual iliac screw constructs compared to the tuning fork plate fixation system. The factor of safety of the tuning fork plate device was 50% higher than the dual iliac screw fixation.
GLOBAL SPINE JOURNAL
(2022)
Article
Biology
Jiantao Liu, Yanzheng Gao, Binbin Niu, Jintao Xiu, Hongbo Wang, Yanbiao Wang, Yin Yang
Summary: The novel double-hook clavicular plate shows significant reductions in stress on the bone and screws around the clavicle, as well as helping to alleviate peak stress on the acromion.
COMPUTERS IN BIOLOGY AND MEDICINE
(2021)
Article
Materials Science, Multidisciplinary
Somasundaram Prasadh, Anirudh Venkatraman Krishnan, C. Y. H. Lim, Manoj Gupta, Raymond Wong
Summary: This study compares the stress distribution of magnesium alloy and titanium fracture fixation plates in simple uni-lateral mandibular angle fractures and analyzes the stresses acting within the screws used to stabilize the plates. The results show that the circular bar design exhibits lower stresses within the prosthesis compared to the straight plate designs.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Ryo Hamanaka, Runa Yamaguchi, Daiki Kuga, Sachio Jinnai, Hiroya Komaki, Jun-ya Tominaga, Noriaki Yoshida
Summary: The study introduced a new technique using open-coil springs and anchor screws to improve molar distalization efficiency in orthodontics, and the finite element analysis confirmed the effectiveness of this method.
APPLIED SCIENCES-BASEL
(2022)
Article
Anatomy & Morphology
Jordan Bestwick, Andrew S. Jones, Sterling J. Nesbitt, Stephan Lautenschlager, Emily J. Rayfield, Andrew R. Cuff, David J. Button, Paul M. Barrett, Laura B. Porro, Richard J. Butler
Summary: The study focused on the skull morphology and function of the pseudosuchian reptile Effigia, revealing it to be a specialist herbivore likely feeding on softer plant material, a unique niche among the study taxa. The research found limited functional convergence with Ornithomimus and Struthio despite morphological similarities, emphasizing that superficial morphological similarity does not always imply functional and ecological convergence.
ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Waisum Ma, Michael Pittman, Richard J. Butler, Stephan Lautenschlager
Summary: Theropod dinosaurs underwent significant changes in their mandibular evolution and morphological adaptations, which reflected their dietary shifts. Using finite element analysis, we found variations in feeding mechanics among different dietary groups and major clades of non-avialan coelurosaurian theropods. Overall, there was a reduction in feeding-induced stresses along all theropod lineages through time. This reduction was associated with the expansion and development of the mandible in herbivores and carnivores, likely through the curved bone effect. Observing the same reduction in an ontogenetic series of jaws in tyrannosaurids, we suggest that this structural strengthening of the theropod mandible over time, regardless of diet, is linked to functional adaptations acquired during ontogeny.
Article
Paleontology
Anna Krahl, Adam S. Smith, Ingmar Werneburg
Summary: Plesiosaurians evolved similar wing-like flippers for underwater flight. This study discusses the transposition of fore- and hind flippers in a specific specimen and provides methods for correctly identifying the osteological characteristics of this species.
Article
Ecology
Ingmar Werneburg, Pascal Abel
Summary: This study investigates the relationship between skull modularity and temporal skull morphology. By examining the skull network of an early amniote, the researchers discovered complex partitioning in the temporal region, which indicates potential positions for temporal skull openings. Through modeling different temporal skull morphotypes, the researchers found that the introduction of temporal openings leads to comprehensive changes in skull modularity. The alternative incorporation of the jugal and palate highlights the importance of an integrated view on skull evolution.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Ecology
Oliver E. Demuth, Juan Benito, Emanuel Tschopp, Stephan Lautenschlager, Heinrich Mallison, Niklaus Heeb, Daniel J. Field
Summary: Taphonomic and diagenetic processes distort the morphology of fossil vertebrate remains. To overcome this challenge, researchers propose a novel reconstruction workflow combining retopology and retrodeformation. Case studies demonstrate the effectiveness of this workflow in reconstructing the original morphology of fossils.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Anatomy & Morphology
Casey M. Holliday, Kaleb C. Sellers, Emily J. Lessner, Kevin M. Middleton, Corrine Cranor, Conner D. Verhulst, Stephan Lautenschlager, Kenneth Bader, Matthew A. Brown, Matthew W. Colbert
Summary: New imaging and biomechanical approaches have led to a renaissance in our understanding of crocodylian anatomy, particularly in the study of jaw muscles. These approaches, such as iodine-contrast microCT and 3D modeling, provide new insights into the anatomy, diversity, and function of jaw muscles and the heads of crocodylians.
ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
(2022)
Article
Zoology
Ingmar Werneburg, Uwe Hossfeld, Georgy S. Levit
Summary: This report presents a recently discovered student script of a paleontology lecture by Ernst Haeckel. The script covers the taxonomy and anatomy of fossil invertebrates and vertebrates. The drawings included in the script provide insights into Haeckel's visualization of paleontology in the 1860s. The report also explores the division between zoology, embryology, and paleontology in Germany during the 19th century.
VERTEBRATE ZOOLOGY
(2022)
Article
Biology
Stephan Lautenschlager
Summary: The shape of the archosaur eye socket varies depending on feeding habits and body size. Large carnivores have adopted elliptical and keyhole-shaped orbits, which are beneficial in mitigating feeding-induced stresses.
COMMUNICATIONS BIOLOGY
(2022)
Article
Multidisciplinary Sciences
Eva C. Herbst, Luke E. Meade, Stephan Lautenschlager, Niccolo Fioritti, Torsten M. Scheyer
Summary: This paper introduces a new interactive tool for three-dimensional modelling of muscles in Blender software and provides a guide on reconstructing distorted or incomplete specimens using Blender tools. These methods can be applied to paleontological and human biomechanics research.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
David J. Button, Laura B. Porro, Stephan Lautenschlager, Marc E. H. Jones, Paul M. Barrett
Summary: The extent to which evolution is deterministic is a topic of debate in biology. Fossil records provide crucial information for this debate, but data for extinct taxa are limited. By analyzing the skulls of early-diverging ornithischian dinosaurs, researchers discovered that different adaptations of the feeding apparatus led to similar performance levels, demonstrating that phenotypic evolution is not necessarily predictable.
Article
Anatomy & Morphology
Juan V. V. Ruiz, Gabriel S. S. Ferreira, Stephan Lautenschlager, Mariela C. C. de Castro, Felipe C. C. Montefeltro
Summary: This study investigated the craniomandibular functional morphology of the bush dog and compared it to the grey wolf and grey fox. The results showed that the bush dog's biting behavior is more similar to the wolf's, suggesting a convergent evolution in their craniomandibular functional morphology. The bush dog has relatively strong bite force and is specialized in hunting prey similar in size to itself.
JOURNAL OF ANATOMY
(2023)
Article
Zoology
Ingmar Werneburg, Irina Ruf
Summary: This collection of research articles focuses on various aspects of vertebrate morphology, exploring the interrelationship between ontogenetic and functional adaptations and evolutionary transformations. The articles apply modern and traditional techniques, integrating conceptual frameworks from early morphological research.
VERTEBRATE ZOOLOGY
(2022)
Article
Biology
Stephan Lautenschlager, Michael J. Fagan, Zhe-Xi Luo, Charlotte M. Bird, Pamela Gill, Emily J. Rayfield
Summary: Skeletal simplification occurred in multiple vertebrate clades, including the evolution from premammalian cynodonts to mammals. However, digital reconstruction and biomechanical modeling demonstrate that there is no evidence for an increase in cranial strength and biomechanical performance during this transition.
COMMUNICATIONS BIOLOGY
(2023)
Article
Anatomy & Morphology
Molly J. Fawcett, Stephan Lautenschlager, Jordan Bestwick, Richard J. Butler
Summary: This study used finite element analysis to compare the functional morphology of basal pseudosuchian archosaurs with the stress distribution of post-Triassic theropod dinosaurs. The results showed some degree of functional convergence, but also revealed that the basal loricatan Saurosuchus had a weaker bite force and likely consumed softer parts of carcasses. This finding highlights the functional diversity of basal pseudosuchians and the functional differences between Triassic and post-Triassic apex predators.
ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
(2023)
Review
Anatomy & Morphology
Ingmar Werneburg, Uwe Hossfeld, Georgy S. Levit
Summary: This article introduces the discussion between Charles Darwin and Ernst Haeckel about Nikolai N. Miklucho-Maclay and emphasizes its importance for the history of science. They discuss Miklucho-Maclay's discovery of a swim bladder anlage in sharks, with Haeckel expressing enthusiasm while Darwin is less interested. The article further discusses the scientific treatment of Miklucho-Maclay's observation in the literature and the homology, origin, and destiny of gas organs-swim bladders and lungs-in vertebrate evolution from an ontogenetic point of view.
DEVELOPMENTAL DYNAMICS
(2023)