A5070570077- Cerebral Palsy and Movement Disorders
- Balance, Gait, and Falls Prevention
- Muscle activation and electromyography studies
- Lower Extremity Biomechanics and Pathologies
- Total Knee Arthroplasty Outcomes
- Hip disorders and treatments
- Sports injuries and prevention
- Knee injuries and reconstruction techniques
- Orthopaedic implants and arthroplasty
- Stroke Rehabilitation and Recovery
- Botulinum Toxin and Related Neurological Disorders
- Prosthetics and Rehabilitation Robotics
- Sports Performance and Training
- Musculoskeletal pain and rehabilitation
- Infant Development and Preterm Care
- Family and Disability Support Research
- Motor Control and Adaptation
- Sarcoma Diagnosis and Treatment
- Bone fractures and treatments
- Foot and Ankle Surgery
- Shoulder Injury and Treatment
- Additive Manufacturing and 3D Printing Technologies
- Neurogenetic and Muscular Disorders Research
- Bone Tissue Engineering Materials
- Bone Tumor Diagnosis and Treatments
Children’s Health Queensland Hospital and Health Service
2016-2025
Griffith University
2016-2025
Queensland Children’s Hospital
2017-2024
Queensland Health
2012-2022
Metro South Health
2021
Gold Coast Health
2019-2020
The University of Queensland
2006-2019
Cerebral Palsy Alliance
2019
Royal Children's Hospital
2009-2014
Texas Instruments (United States)
1998
During human locomotion lower extremity muscle-tendon units undergo cyclic length changes that were previously assumed to be representative of muscle fascicle changes. Measurements in cats and humans have since revealed can uncoupled from those the unit. Ultrasonography is frequently used estimate during locomotion. Fascicle analysis requires time consuming manual methods are prone error experimenter bias. To bypass these limitations, we developed an automatic tracking method based on...
Abstract Muscle synergies provide a simple description of complex motor control mechanism. Synergies are extracted from muscle activation patterns using factorisation methods. Despite the availability several methods in literature, most appropriate method for synergy extraction is currently unknown. In this study, we compared four methods: non-negative matrix factorisation, principal component analysis, independent and factor analysis. Probability distribution were with probability...
Background: a fall occurs when an individual experiences loss of balance from which they are unable to recover. Assessment recovery ability in older adults may therefore help identify individuals at risk falls. The purpose this 12-month prospective study was assess whether the recover forward with single step across range lean magnitudes predictive Methods: two hundred and one community-dwelling adults, aged 65–90 years, underwent baseline testing sensori-motor function followed by falls...
Gait analysis together with musculoskeletal modeling is widely used for research. In the absence of medical images, surface marker locations are to scale a generic model individual's anthropometry. Studies evaluating accuracy and reliability different scaling approaches in pediatric and/or clinical population have not yet been conducted and, therefore, formed aim this study. Magnetic resonance images (MRI) motion capture data were collected from 12 participants cerebral palsy 6 typically...
Abstract Finite element analysis (FEA) is commonly used in orthopaedic research to estimate localised tissue stresses and strains. A variety of boundary conditions have been proposed for isolated femur analysis, but it remains unclear how these assumed constraints influence FEA predictions bone biomechanics. This study compared the femoral head deflection (FHD), stresses, strains elicited under four (fixed knee, mid-shaft constraint, springs, isostatic methods) benchmarked mechanics against...
Finite element analysis (FEA) is nowadays a pivotal tool in orthopaedic research for personalized virtual surgery planning. Despite its widespread use, comprehensive evaluation of the effect boundary conditions on simulation physiological mechanics implanted bone currently lacking. This study assesses impact and femur geometry predicted mechanics. It focuses an isolated femur, partially imaged, from paediatric patient with femoral varus who underwent proximal osteotomy. By employing FEA...
Human movement requires an ongoing, finely tuned interaction between muscular and tendinous tissues, so changes in the properties of either tissue could have important functional consequences. One condition that alters demands placed on lower limb muscle-tendon units is use high-heeled shoes (HH), which force foot into a plantarflexed position. Long-term HH has been found to shorten medial gastrocnemius muscle fascicles increase Achilles tendon stiffness, but consequences these for locomotor...
Background.Older adults compared with young have reduced strength and balance recovery ability. The purpose of the present study was to investigate whether age, sex, and/or lower limb predicted stepping strategy used recover from a forward loss balance.
This study investigates the in vivo function of medial gastrocnemius and soleus muscle-tendon units (MTU), fascicles, tendons during walking children with cerebral palsy (CP) an equinus gait pattern.Fourteen CP (9 males, 5 females; mean age 10y 6mo, standard deviation [SD] 2y 11mo; GMFCS level I=8, II=6), 10 typically developing (6 4 10y, SD 1mo) undertook full body 3D analysis simultaneous B-mode ultrasound images fascicles walking. Fascicle lengths were analysed using a semi-automated...
The single-leg squat (SLS) is a common test used by clinicians for the musculoskeletal assessment of lower limb. aim current study was to reveal kinematic parameters experienced and inexperienced determine SLS performance establish reliability such assessment. Twenty-two healthy, young adults (23.8 ± 3.1 years) performed three SLSs on each leg whilst being videoed. Three-dimensional data hip knee recorded using 10-camera optical motion analysis system (Vicon, Oxford, UK). rated from video...
3D printing is an emergent manufacturing technology recently being applied in the medical field for development of custom bone prostheses and scaffolds. However, successful industry transformation to this new design approach requires integration, concurrent multi-disciplinary collaboration, a robust quality management framework. This latter change enabler focus study. While number comprehensive frameworks have been developed recent decades ensure that devices produces reliable products, they...
Accurate predictive simulations of human gait rely on optimisation criteria to solve the system’s redundancy. Defining such is challenging, as objectives driving optimization are unclear. This study evaluated how minimising various physiologically-based (i.e., cost transport, muscle activity, head stability, foot–ground impact, and knee ligament use) affects predicted gait, developed a combined, weighted function tuned predict healthy gait. A generic planar musculoskeletal model with 18...
Musculoskeletal (MSK) models based on literature data are meant to represent a generic anatomy and popular tool employed by biomechanists estimate the internal loads occurring in lower limb joints, such as joint reaction forces (JRFs). However, since these normally just linearly scaled an individual's anthropometry, it is unclear how their estimations would be affected personalization of key features MSK anatomy, one which femoral version angle.How JRF magnitudes computed through model...