A5012785604- Musculoskeletal pain and rehabilitation
- Automotive and Human Injury Biomechanics
- Lower Extremity Biomechanics and Pathologies
- Spine and Intervertebral Disc Pathology
- Sports Performance and Training
- Knee injuries and reconstruction techniques
- Medical Imaging and Analysis
- Muscle activation and electromyography studies
- Total Knee Arthroplasty Outcomes
- Osteoarthritis Treatment and Mechanisms
- Human Pose and Action Recognition
- Traumatic Brain Injury Research
- Diabetic Foot Ulcer Assessment and Management
- Orthopaedic implants and arthroplasty
- Occupational Health and Performance
- Mechanics and Biomechanics Studies
- Proteoglycans and glycosaminoglycans research
- Ion-surface interactions and analysis
- Engineering Applied Research
- Bone fractures and treatments
- Context-Aware Activity Recognition Systems
- Elasticity and Material Modeling
- Winter Sports Injuries and Performance
- Agriculture and Farm Safety
- Trauma and Emergency Care Studies
Southwest Research Institute
2012-2024
Recent in vitro evidence shows that glycosaminoglycans (GAGs) and proteoglycans (PGs) bone matrix may functionally be involved the tissue-level toughness of bone. In this study, we showed effect biglycan (Bgn), a small leucine-rich proteoglycan enriched extracellular associated GAG subtype, chondroitin sulfate (CS), on vivo, using wild-type (WT) Bgn deficient mice. The amount total GAGs CS mineralized compartment KO mouse decreased significantly, with reduction bone, comparison those WT...
Cervical spinal injuries are a significant concern in all trauma injuries. Recent military conflicts have demonstrated the substantial risk of injury for modern warfighter. Finite element models used to investigate mechanisms often fail examine effects variation geometry or material properties on mechanical behavior. The goals this study were model geometric set cervical spines, extend parametric finite model, and, as first step, validate against experimental data low-loading conditions....
Three-dimensional force plates are important tools for biomechanics discovery and sports performance practice. However, currently, available 3D lack portability often cost-prohibitive. To address this, a recently discovered sensor technology was used in the fabrication of prototype plate. Thirteen participants performed bodyweight weighted lunges squats on plate standard positioned series to compare forces measured by both validate technology. For lunges, there excellent agreement between...
Nucleus replacement technologies are a minimally invasive alternative to spinal fusion and total disc that have the potential reduce pain restore motion for patients with degenerative disease. Finite element modeling can be used determine biomechanics associated nucleus technologies. The current study focuses on new device designed as conforming silicone implant an internal void. A validated finite model of human lumbar L3-L4 segment was developed investigate influence spine biomechanics. In...
AbstractThe objective of this investigation was to develop probabilistic finite element (FE) models the anterior longitudinal ligament (ALL) and posterior (PLL) cervical spine that incorporate natural variability biological specimens. In addition model development, a rigorous validation methodology developed quantify performance. Experimental data for geometry dynamic properties ALL PLL were used create FE capable predicting not only mean relaxation response but also observed experimental...
Analyzing sports performance or preventing injuries requires capturing ground reaction forces (GRFs) exerted by the human body during certain movements. Standard practice uses physical markers paired with force plates in a controlled environment, but this is marred high costs, lengthy implementation time, and variance repeat experiments; hence, we propose GRF inference from video. While recent work has used LSTMs to estimate GRFs 2D viewpoints, these can be limited their modeling...
We present diamond-like carbon (DLC) conversion surfaces to detect particles with energy below 2 keV. Conversion have been widely applied in measurements of low-energy by instruments onboard planetary and heliophysics missions. Their effectiveness is characterized the efficiency changing charge state incident while maintaining a narrow angular distribution for reflected particles. DLC as surface coating material has high efficiency. developed production process that provides ultra-smooth...
3D Markerless motion capture technologies have advanced significantly over the last few decades to overcome limitations of marker-based systems, which require significant cost, time, and specialization. As markerless develop mature, there is increasing demand from biomechanics community provide kinematic kinetic data with similar levels reliability accuracy as current reference standard methods. The purpose this study was evaluate how a novel system trained both hand-labeled synthetic...
Strains and pressures in the brain are known to be influenced by rotation of head response loading. This is governed motion head, as permitted neck, due loading conditions. In order better understand effect neck characteristics have on strains brain, a human finite element model (HHFEM) was attached two FEMs: standard, well characterized Hybrid III Anthropometric Test Device FEM; high fidelity parametric probabilistic FEM that has been hierarchically validated. The well-established...
The potential for delayed evacuation of injured Service members from austere environments highlights the need to develop solutions that can stabilize a wound and enable mobility during these prolonged casualty care (PCC) scenarios. Lower extremity fractures have traditionally been treated by immobilization (splinting) followed air - paradigm not practical in PCC In civilian sector, treatment injuries sustained remote recreational activities similar challenges, particularly when adverse...
Abstract As markerless motion capture technologies develop and mature, there is an increasing demand from the biomechanics community to provide kinematic data with same level of accuracy as current gold standard methods. The purpose this study was evaluate how adding synthetic training dataset a deep learning based system impacts measurements during two functional movements. Synchronized video multiple camera views captured along marker-based 9 subjects who performed 3 repetitions...
It is widely accepted that the mechanical environment within knee, or more specifically, increased altered stresses strains generated cartilage, a leading cause of knee osteoarthritis (OA). However, significant unfulfilled technological challenge in musculoskeletal biomechanics and OA research has been determining dynamic cartilage (and other components) resulting from routine non-routine physical movements. There are two methods investigating joint mechanics have used to date: 1) forward...
Injury prediction and mitigation are common overarching goals of modern biomechanical research. This research is fundamental to preventing mitigating injuries sustained by those exposed dangerous conditions including but not limited occupational hazards, warfighter risks, automotive accidents, etc. Unlike traditional mechanical system research, biological systems difficult costly test resulting in a need for robust accurate numerical simulations. Models the cervical spine complex, nonlinear...
Introduction: Non-combat musculoskeletal injuries (MSKIs) during military training significantly impede the US military's functionality, with an annual cost exceeding $3.7 billion. This study aimed to investigate effectiveness of a markerless motion capture system and full-body biomechanical movement pattern assessments predict MSKI risk among trainees. Methods: A total 156 male United States Air Force (USAF) airmen were screened using validated biomechanics system. Trainees performed...
Analyzing sports performance or preventing injuries requires capturing ground reaction forces (GRFs) exerted by the human body during certain movements. Standard practice uses physical markers paired with force plates in a controlled environment, but this is marred high costs, lengthy implementation time, and variance repeat experiments; hence, we propose GRF inference from video. While recent work has used LSTMs to estimate GRFs 2D viewpoints, these can be limited their modeling...
Abstract In this work, we discuss the development of accelerated atmospheric corrosion test cycles designed to produce similar types damage observed during field exposures while also highly accelerating formation that damage. These four vary times spent in three different ranges RH (high, intermediate, and low) maintaining a constant temperature. The ratios testing time each these were inspired by profiles obtained variety locations throughout continental U.S. To ensure performance between...