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Relationships between joint position sense (JPS) and the sensorimotor characteristics of joint stiffness, time to detect motion, and time to peak torque during a perturbation test have rarely been investigated due to methodological challenges. The purpose of this study was to compare JPS and the sen...
The purpose of this study was to directly compare the passive moduli of single muscle fibers and fiber bundles from both frog and mouse muscles. This study demonstrated that the passive elastic tensile load born by frog fibers is almost exclusively born intracellularly by the muscle fibers themselve...
Patellofemoral pain (PFP) is a common pathology that often requires rehabilitation exercises such as lunges to strengthen leg musculature. We examined the joint reaction forces at the knee during different phases of forward and backward lunges. Peak quadriceps force and patellofemoral (PF) joint rea...
The purpose of this study was to further develop robust ways to non-invasively measure and report scapular dynamics used by diverse reverse total shoulder arthroplasty (RTSA) patients.
Novel adaptive zero-velocity update (ZUPT) criteria when applied to data from a shin-mounted inertial measurement unit (IMU) are able to acceptably track start-stop pedestrian movements conducted at multiple velocities. This approach appears to overcome the persisting limitation of distinguishing co...
Like breathing, standing balance is mostly effortless but the motion related to maintaining an upright posture can be perceived consciously. Because standing balance involves subcortical processes, the motion perceived while maintaining standing balance may differ from the motion detected by the bal...
To remain internationally competitive in figure skating, athletes must be able to perform jumps safely. The axel jump has been considered traditionally the most difficult jump and as athletes trains since very young age, it is fundamental to recognize landing techniques rising injury risk. This stud...
High-speed video analysis has been used to measure certain kinematic metrics during a competitive diver’s performance. However, it is time-consuming and limited in accuracy. An inertial measurement unit (IMU) may substitute video analysis. However, IMUs must be evaluated before implementation. Thi...
Medial knee osteoarthritis (mKOA) progression is linked to a¶ high peak knee adduction moment (pKAM). Toe-in and toeout¶ gait modifications can reduce the pKAM, but prescribing a¶ uniform modification to an entire cohort has yielded mixed¶ clinical outcomes. Our study investigates the efficacy o...
The periodic trajectory taken by a muscle on a force-length plot, i.e. a work loop, is an important measure of its function that arises from its active force generation and resistance to motion. Several types of work loops are routinely observed across different muscle types and across species: a la...
The mechanical nature of factors influencing hip fracture rates are not fully understood. This study evaluated the influence of fall simulation paradigm (FSP), sex, and trochanteric soft tissue thickness (TSTT) on femoral neck stresses and fracture risk. Through coupling of experimental FSP and tiss...
Plantar fascia is related to the metatarsophalangeal joint (MTPJ) by the windlass mechanism, but the correlation between joint stiffness and diagnosis of plantar fasciitis has not been researched. In this study, passive MTPJ dorsiflexion stiffness was measured in healthy subjects and patients with p...
Patella kinematics such as lateral tilt and translation may be associated with patellofemoral pain and osteoarthritis development. Physiotherapists design programs to strengthen the VMO to decrease tracking and tilt to reduce contact pressure. Using a musculoskeletal model, we estimated in vivo join...
The present work compares the anticipatory postural adjustments in forward and backward stepping, taking also into account the effect of wearing shoes while performing this task. Eighteen healthy subjects participated in the study, performing 10 trials on a forceplate for each of the four conditions...
The most commonly injured area for golfers is the lower back. The purpose of this study was to describe the sequencing patterns of the pelvis, lower trunk (LT), and upper trunk (UT) in golfers with lower back pain (LBP). Twelve amateur golfers with a history of LBP performed five driver swings recor...
The purpose of this topic is to describe how biomechanical studies performed to assess the effects on digital flexor tendons excursion of these minimally invasive procedures in comparison to the classical open approach finally leads to the development of original procedures that are now a days routi...
A rotating platform (RP) total knee replacement (TKR) design increased total contact area and reduced peak contact pressures compared to a fixed-bearing (FB) design in a finite element analysis (FEA) of turning gait. Considering physiological knee biomechanics through FEA may provide important desig...
Sports related concussions are managed clinically; however, recent evidence suggests persistent deficits beyond clinical recovery. Nineteen intercollegiate student-athletes performed 5 trails of gait initiation (GI) prior to the concussion (baseline) and again on the day they returned to participati...
We evaluated inter-limb movement variability from wireless sensor data captured during treadmill walking and jogging gait. Using machine learning algorithms, gait features were extracted and analysed to classify patients with Anterior Cruciate Ligament reconstructed (ACLR)knees from healthy subjects...
This presentation will focus on technological approaches that are applied in biomechanical research on head injury and in assessment of protective headgear. Both physical surrogate models that are designed to mimic the biomechanics of living humans, and instrumentation that quantifies exposure to in...
An exoskeleton to assist the knee during a vertical jump was built and tested. The device stores energy in springs during knee bending before the jump and releases energy during the leg push. The device thus provides support during both the negative and the positive work phases of the muscles during...
The effect of trochlear groove depth on lateral patellar stability following simulated tibial tubercle osteotomy was investigated using a combined statistical shape modelling and musculoskeletal simulation approach. Knee models with trochlear grooves ranging from shallow to deep were generated using...
This study considers the technology of patient-specific computer planning of dentition restoration of edentulous mandible using dental implants. A model of the jaw and distribution of elastic modules by jaw‘s volume are reconstructed from a computer tomogram. The model is supplemented with virtual...
Peak lower-limb acceleration (PLA) is a possible factor influencing tibial stress fractures in runners . The majority of training runs are performed over varying surfaces and at lower intensity . This study evaluated differences in PLA across road and woodchip trail surfaces during a typical trainin...
We used a novel prosthosis to simulate the biomechanics of cycling with a uni-lateral amputation in people without an amputation. This provided a model for acute adaptation to the asymmetrical biomechanics associated with using a transtibial prosthesis. We compared joint moment data to a group of pe...
Swing tempo and rhythm are the most important golf performance indicators. In this study, we investigated the swing tempo and rhythm according to different golf clubs and distance using a wireless inertial measurement unit (IMU) sensor. 14 golfers performed repeated, consistent swing with three golf...
The current work encompassed the development of a multi-directional CT-compatible mechanical testing device and quantified the accuracy of full-field displacements predicted by QCT-FEMs of the scapula. Digital volume correlation (DVC) was used to derive full-field experimental displacement measureme...
Closed-loop tactile biofeedback (TBF), delivered during the stance phase of gait, created a change in local dynamic stability in people with Parkinson’s disease (PD) while walking. TBF decreased the rate of local divergence compared to baseline and open-loop cueing (metronome), but this effect was...
An accurate and reliable procedure to co-register CT and MR images of the cervical spine (C1-C7) is essential to construct a personalized model of the neck musculoskeletal system. In this study, we proposed principal component analysis (PCA) based a simple and fully automated registration technique ...
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