Article
Computer Science, Interdisciplinary Applications
Youngjae Yoon, Jae-eun Kim, Junho Jung, Sang-hwan Oh, Gunwoo Noh, Yong-Dae Kwon
Summary: The study analyzed the impact of mandibular contouring surgery on mandibular stability. Finite element analysis revealed that the surgery may lead to increased fragility of the mandible, with greater risk of bone resorption and fracture.
JOURNAL OF COMPUTATIONAL DESIGN AND ENGINEERING
(2021)
Article
Biology
Sarah Broyde, Matthew Dempsey, Linjie Wang, Philip G. Cox, Michael Fagan, Karl T. Bates
Summary: Biomechanical modelling is a useful tool for studying the evolution of functional performance in extinct animals, but reconstructions of soft tissue properties in current models face challenges. The qualitative and quantitative differences in reconstructions have a significant impact on predicting evolutionary patterns in macroevolutionary studies.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Engineering, Electrical & Electronic
Francesco Crenna, Giovanni Battista Rossi, Marta Berardengo
Summary: This study focused on measuring internal torques in human body articulations using a combination of biomechanical model and measurements, addressing uncertainties through a probabilistic model. Various influence factors, such as marker misplacement and parasite movements, were considered, with a detailed discussion on anthropometric parameter uncertainty. The proposed approach aims to identify the most influential experimental factors.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Multidisciplinary Sciences
Karl T. Bates, Linjie Wang, Matthew Dempsey, Sarah Broyde, Michael J. Fagan, Philip G. Cox
Summary: The study evaluated the accuracy of muscle area assessment techniques in estimating muscle proportions, force outputs and bone loading in a comparative macroevolutionary context, revealing poor performance with large errors in muscle properties and bone stress. The methods also fail to capture qualitative differences between rodent morphotypes, raising doubts on their validity for providing input data for biomechanical models applied in functional transitions and taxon-rich statistical models at a macroevolutionary scale. Future work is suggested to explore correlations between attachment area and muscle size within homologous muscles across multiple species for more accurate predictions in macroevolutionary and functional studies.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2021)
Article
Chemistry, Analytical
Mantas Jucevicius, Rimantas Oziunas, Mindaugas Mazeika, Vaidotas Marozas, Darius Jegelevicius
Summary: This study explores the use of a permanent magnet and a 3-axial magnetometer to track the mandible's spatial position in relation to the maxilla. An algorithm was developed to determine sensor coordinates from magnetic field values, showing potential for wearable intra-oral systems.
Article
Biology
Rachel A. Olson, Stephane J. Montuelle, Brad A. Chadwell, Hannah Curtis, Susan H. Williams
Summary: This study compared jaw and tongue kinematics during chewing and drinking in pigs, showing significant differences in movements between these behaviors.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2021)
Article
Engineering, Biomedical
Benedikt Sagl, Martina Schmid-Schwap, Eva Piehslinger, Xiaohui Rausch-Fan, Ian Stavness
Summary: This study investigated the impact of food bolus variables on mechanical TMJ loading, finding that smaller and softer food boluses lead to reduced TMJ loading. The results support current guidelines on bolus modifications and suggest potential guidelines for bolus positioning that could be validated in future clinical trials. This in silico investigation of dynamic chewing with detailed TMJ stress helps to enhance confidence in TMD self-management recommendations and may help in reducing pain levels for patients.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Neurosciences
Shiro Nakamura, Risa Kajiwara, Tsuyoshi Noguchi, Kiyomi Nakayama, Ayako Mochizuki, Masanori Dantsuji, Avijite Kumer Sarkar, Tomio Inoue
Summary: The study found that the motoneurons innervating the jaw-closing and jaw-opening muscles play a critical role in oro-facial behaviors. The developmental patterns of non-NMDA and NMDA receptor-mediated inputs vary among these motoneurons, possibly related to their distinct roles in the postnatal development of feeding behavior.
Article
Multidisciplinary Sciences
James L. Williamson, Glen A. Lichtwark, Gregory S. Sawicki, Taylor J. M. Dick
Summary: Passive ankle exoskeletons lead to a brief period of instability during unexpected perturbations, but users rapidly stabilize via a distal-to-proximal redistribution of joint work such that the knee performs an increased energy dissipation role, and stability is regained within one hop cycle.
ROYAL SOCIETY OPEN SCIENCE
(2023)
Article
Materials Science, Textiles
Juan Cordero-Sanchez, Pedro Perez-Soriano, Bruno Bazuelo-Ruiz
Summary: This study focuses on determining the effects of the upper material of running shoes on the mechanical power flows of the muscles of the lower limbs during the support phase of running. The experiment found that the upper material has a significant impact on the muscle power flow variables in the ankle, knee, and hip joints. The KNIT-upper model generates and absorbs more mechanical power at the ankle joint compared to the MESH-upper model, and there are also differences in the mechanical power flows at the knee and hip joints.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Physiology
Laura Meszaros-Beller, Maria Hammer, Syn Schmitt, Peter Pivonka
Summary: Inverse-dynamics analysis is widely used for studying spine biomechanics. This study aimed to determine the impact of modelled passive structures on joint forces and torques that muscles must balance.
FRONTIERS IN PHYSIOLOGY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Sivaranjani Madhan, Gustavo G. Nascimento, Janne Ingerslev, Marie Cornelis, Else Marie Pinholt, Paolo M. Cattaneo, Peter Svensson
Summary: This study investigated the relationship between TMD, pain, jaw and masticatory function at different stages of orthognathic surgical treatment. The results showed that orthognathic surgery did not have a negative impact on TMD, and the jaw function and pain levels were similar to the control group at 24 months follow-up. However, the masticatory function was affected by the surgery and required a longer recovery time. Furthermore, it was confirmed that pain and TMD were associated with limitations in jaw function and impacts on masticatory function.
JOURNAL OF ORAL REHABILITATION
(2023)
Article
Psychology, Biological
Masaharu Yamada, Ayano Katagiri, Yuji Masuda, Hiroki Toyoda, Hitoshi Niwa, Takafumi Kato
Summary: This longitudinal study examined the development of jaw-closing muscle activities during ingestive behaviors in rats. The results showed that distinct patterns of muscle activity emerged before weaning and continued to change over time for each behavior.
PHYSIOLOGY & BEHAVIOR
(2023)
Article
Multidisciplinary Sciences
Pawel R. Golyski, Gregory S. Sawicki
Summary: Current approaches to investigating stabilizing responses during locomotion lack measures that directly relate to perturbation demands and are shared across different levels of description. This study investigated whether mechanical energy could be used as a "common currency" to study treadmill walking. The findings showed that early stance perturbations did not cause a change in net work at the leg/treadmill interface, but resulted in positive net work by the overall leg. In contrast, late stance perturbations led to positive work at the leg/treadmill interface, but no change in net work by the overall leg. The changes in ankle work and contralateral knee work were the best indicators of overall leg work.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2022)
Article
Multidisciplinary Sciences
Rachel S. Sender, David S. Strait
Summary: This study evaluated dome biomechanical models used to describe tooth strength, confirming their accuracy in predicting the distribution and orientation of tensile stresses. However, it also discovered heterogeneity of stress orientation across the lateral enamel, indicating that fractures may not fully propagate between cusp tip and cervix under certain loading conditions. The crown is most susceptible to failure during biting on a hard object with a single cusp, suggesting that geometrically simple biomechanical models do not fully capture the complex adaptations for strength in actual teeth.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2023)
Article
Biophysics
Nathan D. Camarillo, Rafael Jimenez-Silva, Frances T. Sheehan
Summary: This article discusses the statistical dependence between multiple measurements from the same participant and provides recommendations for using these measurements when they are not independent.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
J. Huet, A. -S. Boureau, A. Sarcher, C. Cornu, A. Nordez
Summary: Standard compression in freehand 3D ultrasound induces a bias in volume calculations, but minimal compression and gel pad methods have similar results. With a trained examiner and precautions, the bias can be minimized and become acceptable in clinical applications.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
C. Lariviere, A. H. Eskandari, H. Mecheri, F. Ghezelbash, D. Gagnon, A. Shirazi-Adl
Summary: Recent developments in musculoskeletal modeling have focused on model customization. Personalization of the spine profile may affect estimates of spinal loading and stability. This study investigates the biomechanical consequences of changes in the spinal profile and finds that personalizing the spine profile has medium to large effects on trunk muscle forces and negligible to small effects on spinal loading and stability.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Luke T. Mattar, Arash B. Mahboobin, Adam J. Popchak, William J. Anderst, Volker Musahl, James J. Irrgang, Richard E. Debski
Summary: Exercise therapy fails in about 25.0% of cases for individuals with rotator cuff tears, and one reason for this failure may be the inability to strengthen and balance the muscle forces that keep the humeral head in the correct position. This study developed computational musculoskeletal models to compare the net muscle force before and after exercise therapy between successfully and unsuccessfully treated patients. The study found that unsuccessfully treated patients had less inferiorly oriented net muscle forces, which may increase the risk of impingement.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Natsuki Sado, Takeshi Edagawa, Toshihide Fujimori, Shogo Hashimoto, Yoshikazu Okamoto, Takahito Nakajima
Summary: The existing methods for predicting hip and lumbosacral joint centres in Japanese adults are biased and differ between sexes. We propose new regression equations that consider soft-tissue thickness, sex differences, and a height-directional measure, and validate them using leave-one-out cross-validation.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Peimin Yu, Xuanzhen Cen, Qichang Mei, Alan Wang, Yaodong Gu, Justin Fernandez
Summary: This study aimed to explore the intra-foot biomechanical differences among individuals with chronic ankle instability (CAI), copers, and healthy individuals during dynamic tasks. The study found that copers and CAI individuals had smaller dorsiflexion angles and copers presented a more eversion position compared to healthy participants. Copers also had greater dorsiflexion angles in the metatarsophalangeal joint and more inversion moments in the subtalar joint during certain tasks. These findings can help in designing interventions to restore ankle joint functions in CAI individuals.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Jon Skovgaard Jensen, Anders Holsgaard-Larsen, Anders Stengaard Sorensen, Per Aagaard, Jens Bojsen-Moller
Summary: This study investigates the biomechanical effects of robot-assisted body weight unloading (BWU) on gait patterns in healthy young adults. The results show that dynamic robot-assisted BWU enables reduced kinetic requirements without distorting biomechanically normal gait patterns during overground walking.
JOURNAL OF BIOMECHANICS
(2024)