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The pathogenesis of osteoarthritis (OA) involves both metabolic and biomechanical factors. However, the mechanistic implications of contributing factors – obesity, adiposity, and metabolic syndrome – have been difficult to determine due to the complexities of their interactions. To gain further ...
This study demonstrates a biofeedback method for training adaptable gait. The method involved a customised program and 3D motion capture system. 22 young adults were selected to test the effect of gait adaptability training of two target-oriented stepping tests while walking: (1) vertical foot heigh...
A new high accuracy personalised HTO procedure, ToKa,has been created. An in silico trial based on real patient data has demonstrated the mechanical safety equivalence of the personalised ToKa HTO plate and the most commonly used generic plate.
Machine learning was applied to whole-body kinematics collected during a standardized lifting task to predict lifting start and end height and weight lifted. The resulting models included features of the forearm and pelvis segments, and resulted in accurate classification rates between 83% and 98%.
This study investigated a method to use inertial measurement units (IMUs) in certain types of baseball biomechanics research. The method calculates the timing of maximum knee height (MKH) and ball release (BR) using gyroscopic data and defines them as the starting and ending points of the pitching m...
We introduce a multiscale muscle spindle model that provides a framework to simulate the effects of altered muscle properties, neural dynamics, and descending drive on muscle spindle sensory feedback. Our recent work shows that muscle spindle stretch responses in relaxed muscle have a unique relatio...
To keep up with competitive footwear market nowadays, the progress in modeling and computational simulation is a promising solution for accelerating the product development time, and providing customized products. In this study, the effect of various tread pattern designs on traction performance dur...
Traditional static optimization, which minimizes muscle activations squared, may not accurately estimate muscle activity in pathological populations that have abnormal muscle co-activation. A Matlab-OpenSim interface was created to develop and test objective functions that included a muscle co-activ...
A custom-built continuous wave radar was used to record cycling movements performed by 15 healthy individuals. Doppler signatures presented in the radar signals were analyzed to extract temporal parameters of the movement. Standard motion capture was performed to validate the radar results. Large co...
A procedure is presented by which a non-stationary signal can be partitioned into sections to apply different Butterworth filter cut-off frequencies to respective sections when necessary. The Teager-Kaiser Energy Operator (TKEO) is used to divide the signal into sections based on their energy. The p...
Most state-of-the-art prosthetic controllers define modes of operation corresponding to terrain types such as flat-ground walking or stair ascent. This control policy can create impairments for locomotion when unique situations arise, such as in obstacle avoidance or unstructured terrain. Human loco...
Existing stochastic models of slips depend on computing the probability that the required coefficient of friction (rCOF) exceeds the available coefficient of friction (aCOF). The result is an estimate of the probability of a slip. However, in some applications it is known that a slip has occurred an...
The purpose of this research was to clarify a mechanism of body orientation change at the approach phase to curved path in the sprinting event such as 200m or 400m. As a result, the authors revealed that the direction of the runner’s velocity already changed before the curvature. Then, once runner...
Characterisation of tendon mechanical properties is of importance to gain a comprehensive understanding of this tissue’s responses to ageing and loading and can also inform the development of artificial biomaterials based on living tissue data. In this study, we presented an innovative method of c...
A multiscale model of the lumbar spine was developed to characterize the link between whole-body and tissue-level biomechanics for people with and without a transtibial amputation during sit-to-stand. Lumbar spine kinematics predicted trends in tissue loads well for annulus fibrosis stress vs. flexi...
Cervical spine injuries are one of the most common diagnosed pathologies in traffic car accidents. Diagnosis is given according to patient’s symptoms and visual inspection. However, it is unknown if the diagnosis reflects also the functional impairment of the patient. The ROM data acquired with th...
Hamstring strain injuries (HSIs) are the most common and recurrent soft tissue injury in Australian Rules Football (ARF) [1], with only minor reductions in prevalence observed over the past 20 years. While common belief suggests that hamstring injuries are most likely to occur during terminal swing ...
Damage to the scapholunate interosseus ligament (SLIL) is one of the most disabling upper extremity injuries. Current diagnostic approaches for SLIL are invasive or lack the specificity to assess injury location. A better understanding of carpal bone kinematics following the SLIL injury may help to ...
The aim of this study is to test and validate a novel step counter method (DiSC) based on distance and inertial measurements recorded using a single wearable prototype system (SWINGDS) applied to one of the ankles. Thirteen patients with multiple sclerosis (MS) performed a six-minute walking test (6...
Mechanical loading of the spine has shown to be an important risk factor for the development of low-back pain. A passive flexible beam exoskeleton was tested during static bending tasks and during lifting. The EXO reduced back muscle activity by 20-40% (i.e. 2-4% MVC) during static bending and aroun...
Patients with shoulder subluxation often experience pain which limits arm functionality. In this paper we present a spring loaded shoulder orthosis which provides a joint-oriented force on the upper arm. Due to the type of springs and the location of the attachment points this force is always direct...
It was proposed that muscle force is related to metabolic cost of gait. A knee exoskeleton, harvesting different amounts of energy, modulates the metabolic costs, during gait. We used musculoskeletal modelling and simulation to estimate muscle forces changes due to the energy harvesting levels. Mean...
Healthcare lacks effective tools to identify patients in danger of post-traumatic osteoarthritis progression. Knee joint inflammation and excessive shear strains due to mechanical loading post-injury have been suggested to promote the disease progression. We developed a mechanobiological algorithm t...
The lack of an efficient scientific framework that simplifies the analysis of socket-stump interaction is one of the key reasons why physics-based socket modelling techniques are not prevalent. Herein, we propose a novel scientific framework that generates detailed subject-specific 3D models of the ...
A system to generate mechanical load to the musculoskeletal system, through neuromuscular electrical stimulation (NMES), was developed, with load control through an isometric dynamometer adapted for bed-rest situations. The system allows for the control of several NMES parameters, and positions the ...
The results obtained using the conventional method of measuring the center of pressure (COP) trajectory during gait are influenced by the foot progression angle. To correct this, a method was developed and differences in measurements between the new and conventional methods were identified. The subj...
This research describes a new method to quantify external mechanical load during professional rugby league match play. Positional differences during match play are also explored. Outside backs and hit-up forwards spend the majority of match play in low intensity activity, however, outside backs tend...
A custom-built continuous wave radar was used to examine temporo-spatial gait parameters on healthy adults walking on a treadmill. Data simultaneously collected by the radar and motion capture cameras was analysed and compared to validate the radars accuracy. Excellent intra-class correlations were ...
Cartilage defects have been suggested to cause abnormal loading of subchondral bone, which may cause an adaptive response in the bone. Here, we developed an adaptation algorithm for subchondral bone based on maximum shear strain. Strains above the physiological level were assumed to cause an increas...