John Rasmussen
YOU?
Author Swipe
View article: Assessing within-individual gait acceleration variability: a comparative analysis of remote monitoring and laboratory measurements
Assessing within-individual gait acceleration variability: a comparative analysis of remote monitoring and laboratory measurements Open
Background Wearable sensor technology has revolutionized gait analysis by enabling studies in real-world settings and enhancing ecological validity. However, this shift introduces challenges due to uncontrolled environmental factors that c…
View article: Monitoring Gait Recovery After Total Knee Arthroplasty Using Wearable Sensors: Responsiveness of Gait Accelerations
Monitoring Gait Recovery After Total Knee Arthroplasty Using Wearable Sensors: Responsiveness of Gait Accelerations Open
Functional recovery after total knee arthroplasty (TKA) varies widely among individuals, and traditional assessments often fail to detect subtle changes in real‐world walking ability. Wearable sensors offer continuous and objective trackin…
View article: From Knowledge to Leverage: How to Use Musculoskeletal Simulation to Design Exoskeleton Concepts
From Knowledge to Leverage: How to Use Musculoskeletal Simulation to Design Exoskeleton Concepts Open
Background: An exoskeleton and its wearer form a mutually dependent biomechanical system, where design choices for the exoskeleton can affect the wearer in complex and often unforeseeable ways, and this makes exoskeleton design challenging…
View article: Characterization of spine and torso stiffness via differentiable biomechanics
Characterization of spine and torso stiffness via differentiable biomechanics Open
We present a methodology to personalize the stiffness response of a biomechanical model of the torso and the spine. In high contrast to previous work, the proposed methodology uses controlled force-deformation data that mimic the condition…
View article: From Knowledge to Leverage: How to Use Musculoskeletal Simulation to Design Exoskeleton Concepts
From Knowledge to Leverage: How to Use Musculoskeletal Simulation to Design Exoskeleton Concepts Open
(1) Background: An exoskeleton and its wearer form a mutually dependent biome-chanical system, where design choices for the exoskeleton can affect the wearer in complex and often unforeseeable ways, and this makes exoskeleton design challe…
View article: The Effect of Rotational Guided Growth With Flexible Tethers on the Distal Femoral Bone: An Experimental Study in a Porcine Model
The Effect of Rotational Guided Growth With Flexible Tethers on the Distal Femoral Bone: An Experimental Study in a Porcine Model Open
New and innovative surgical techniques, using a flexible tether to correct rotational deformities of the growing femur have recently emerged, but are lacking radiographic validation of desired rotation and adverse effects in the frontal an…
View article: From Workplace Safety to Behavioral Change: Diverse Applications of Low-Cost Sensors in Indoor Environments
From Workplace Safety to Behavioral Change: Diverse Applications of Low-Cost Sensors in Indoor Environments Open
Low-cost sensors (LCS) have emerged as versatile tools for air quality monitoring across diverse applications. This presentation synthesizes some of our work and findings from multiple projects, demonstrating the adaptability and effective…
View article: Multi-phonon <i>γ</i> vibrational bands and chiral vibrations in the A∼100 neutron-rich region
Multi-phonon <i>γ</i> vibrational bands and chiral vibrations in the A∼100 neutron-rich region Open
We present experimental evidence for the one- and two-phonon γ vibrational bands in the isotopes 103−108 Mo by analyzing high-statistics γ-γ-γ and γ-γ-γ-γ coincidence data from the spontaneous fission of 252 Cf. The consistency of the one-…
View article: A Feasibility Study of a Controlled Standing Fulcrum Side-Bending Test in Adolescent Idiopathic Scoliosis
A Feasibility Study of a Controlled Standing Fulcrum Side-Bending Test in Adolescent Idiopathic Scoliosis Open
Background/Objectives: Spinal flexibility radiographs are important in adolescent idiopathic scoliosis (AIS) for clinical decision-making. In this study, we introduce a new method, the ‘quantitatively controlled standing fulcrum side-bendi…
View article: A novel plate design for rotational guided growth: An experimental study in immature porcine femurs
A novel plate design for rotational guided growth: An experimental study in immature porcine femurs Open
Guided growth for correction of rotational deformities has been reported in several preclinical and clinical studies. Different adverse effects, like growth retardation, articular deformities, and rebound effect have been reported. We have…
View article: Kinematic classification of mandibular movements in patients with temporomandibular disorders based on PCA
Kinematic classification of mandibular movements in patients with temporomandibular disorders based on PCA Open
This retrospective study aimed to kinematically classify mandibular movements collected during Temporomandibular Disorders (TMD) treatment, employing Fourier transformation (FT), Principal Component Analysis (PCA), and K-means clustering (…
View article: A generic detailed multibody model for simulating thoracic spine and ribcage kinematics
A generic detailed multibody model for simulating thoracic spine and ribcage kinematics Open
A reliable and comprehensive multibody musculoskeletal model of the thoracic spine and ribcage can offer valuable insight into the biomechanics of healthy and curved spines. In this study, we developed a generic rigid-body thoracic spine a…
View article: A generic detailed multibody thoracic spine and ribcage model
A generic detailed multibody thoracic spine and ribcage model Open
A reliable and comprehensive multibody musculoskeletal model of the thoracic spine and ribcage can offer valuable insight into the biomechanics behind healthy and curved spines. In this study, we developed a generic rigid-body thoracic spi…
View article: A surface registration‐based approach for assessment of 3D angles in guided growth interventions in the growing femur
A surface registration‐based approach for assessment of 3D angles in guided growth interventions in the growing femur Open
Purpose Postoperative assessment of surgical interventions for correcting femoral rotational deformities necessitates a comparative analysis of femoral rotation pre‐ and post‐surgery. While 2D assessment methods are commonly employed, ongo…
View article: Using Electric Stimulation of the Spinal Muscles and Electromyography during Motor Tasks for Evaluation of the Role in Development and Progression of Adolescent Idiopathic Scoliosis
Using Electric Stimulation of the Spinal Muscles and Electromyography during Motor Tasks for Evaluation of the Role in Development and Progression of Adolescent Idiopathic Scoliosis Open
Introduction: The role of the spinal muscles in scoliogenesis is not fully substantiated. Do they act scoliogenic (inducing scoliosis) or counteract scoliosis in adolescent idiopathic scoliosis (AIS)? In this study, we will examine this by…
View article: Predicting Tissue Loads in Running from Inertial Measurement Units
Predicting Tissue Loads in Running from Inertial Measurement Units Open
Background: Runners have high incidence of repetitive load injuries, and habitual runners often use smartwatches with embedded IMU sensors to track their performance and training. If accelerometer information from such IMUs can provide inf…
View article: Predicting Tissue Loads in Running from Inertial Measurement Units
Predicting Tissue Loads in Running from Inertial Measurement Units Open
Background: Runners have high incidence of repetitive load injuries, and habitual runners often use smartwatches with embedded IMU sensors to track their performance and training. If accelerometer information from such IMUs can provide inf…
View article: Main Sequence to Starburst Transitioning Galaxies: Gamma-ray Burst Hosts at $z\sim2$
Main Sequence to Starburst Transitioning Galaxies: Gamma-ray Burst Hosts at $z\sim2$ Open
Star-forming galaxies populate a main sequence (MS), a well-defined relation between stellar mass (M*) and star-formation rate (SFR). Starburst (SB) galaxies lie significantly above the relation whereas quenched galaxies lie below the sequ…
View article: Accelerations Recorded by Simple Inertial Measurement Units with Low Sampling Frequency Can Differentiate between Individuals with and without Knee Osteoarthritis: Implications for Remote Health Care
Accelerations Recorded by Simple Inertial Measurement Units with Low Sampling Frequency Can Differentiate between Individuals with and without Knee Osteoarthritis: Implications for Remote Health Care Open
Determining the presence and severity of knee osteoarthritis (OA) is a valuable application of inertial measurement units (IMUs) in the remote monitoring of patients. This study aimed to employ the Fourier representation of IMU signals to …
View article: Simulation Framework for Active Upper Limb Exoskeleton Design Optimization Based on Musculoskeletal Modeling
Simulation Framework for Active Upper Limb Exoskeleton Design Optimization Based on Musculoskeletal Modeling Open
In dieser Veröffentlichung wird ein Konzept zur Analyse der biomechanischen Exoskelett-Mensch-Interaktion mit dem Ziel der simulationsbasierten Optimierung von aktiven Oberkörper-Exoskeletten, basierend auf Muskel-Skelett-Modellierung mit …
View article: Predicting Vertical Ground Reaction Forces in Running from the Sound of Footsteps
Predicting Vertical Ground Reaction Forces in Running from the Sound of Footsteps Open
From the point of view of measurement, footstep sounds represent a simple, wearable and inexpensive sensing opportunity to assess running biomechanical parameters. Therefore, the aim of this study was to investigate whether the sounds of f…
View article: The Role of Physical Microenvironmental Cues on Myogenesis: Implications for Tissue Engineering of Skeletal Muscle
The Role of Physical Microenvironmental Cues on Myogenesis: Implications for Tissue Engineering of Skeletal Muscle Open
Skeletal muscle tissue engineering holds promise for the treatment of a variety of degenerative and traumatic muscle conditions. The ultimate goal of skeletal muscle tissue engineering is very challenging, since it needs to closely reprodu…
View article: Biomechanical Analysis of Stoop and Free-Style Squat Lifting and Lowering with a Generic Back-Support Exoskeleton Model
Biomechanical Analysis of Stoop and Free-Style Squat Lifting and Lowering with a Generic Back-Support Exoskeleton Model Open
Musculoskeletal disorders (MSDs) induced by industrial manual handling tasks are a major issue for workers and companies. As flexible ergonomic solutions, occupational exoskeletons can decrease critically high body stress in situations of …
View article: Biomechanical Morphing for Personalized Fitting of Scoliotic Torso Skeleton Models
Biomechanical Morphing for Personalized Fitting of Scoliotic Torso Skeleton Models Open
The use of patient-specific biomechanical models offers many opportunities in the treatment of adolescent idiopathic scoliosis, such as the design of personalized braces. The first step in the development of these patient-specific models i…
View article: Criterion Validity of Linear Accelerations Measured with Low-Sampling-Frequency Accelerometers during Overground Walking in Elderly Patients with Knee Osteoarthritis
Criterion Validity of Linear Accelerations Measured with Low-Sampling-Frequency Accelerometers during Overground Walking in Elderly Patients with Knee Osteoarthritis Open
Sensors with a higher sampling rate produce higher-quality data. However, for more extended periods of data acquisition, as in the continuous monitoring of patients, the handling of the generated big data becomes increasingly complicated. …
View article: Triceps surae strength balancing as a management option for early-stage knee osteoarthritis: A patient case
Triceps surae strength balancing as a management option for early-stage knee osteoarthritis: A patient case Open
The case corroborates the hypothesis, and this suggests further tests by randomized controlled trials. If confirmed, this simple and reversible medical intervention can improve the management of early-stage knee osteoarthritis.