A5036602603- Lower Extremity Biomechanics and Pathologies
- Foot and Ankle Surgery
- Shoulder Injury and Treatment
- Diabetic Foot Ulcer Assessment and Management
- Orthopedic Surgery and Rehabilitation
- Shoulder and Clavicle Injuries
- Muscle activation and electromyography studies
- Sports Performance and Training
- Elbow and Forearm Trauma Treatment
- Sports injuries and prevention
- Musculoskeletal pain and rehabilitation
- Sports Dynamics and Biomechanics
- Balance, Gait, and Falls Prevention
- Total Knee Arthroplasty Outcomes
- Tendon Structure and Treatment
- Osteoarthritis Treatment and Mechanisms
- Knee injuries and reconstruction techniques
- Mechanics and Biomechanics Studies
- Nerve Injury and Rehabilitation
- Cerebral Palsy and Movement Disorders
- Human Pose and Action Recognition
- Context-Aware Activity Recognition Systems
- Gait Recognition and Analysis
- Bone fractures and treatments
- Prosthetics and Rehabilitation Robotics
Queen's University
2016-2025
Queens University
2018-2022
Kingston University
2020
Kingston Health Sciences Centre
2018
Harvard University
2012-2015
Brown University
2008-2014
Spaulding Rehabilitation Hospital
2013-2014
Rhode Island Hospital
2008-2014
Hospital for Special Surgery
2012
Cornell University
2012
Measuring motion of the human foot presents a unique challenge due to large number closely packed bones with congruent articulating surfaces. Optical capture (OMC) and multi-segment models can be used infer motion, but might affected by soft tissue artefact (STA). Biplanar videoradiography (BVR) is relatively new tool that allows direct, non-invasive measurement bone using high-speed, dynamic x-ray images track individual bones. It unknown whether OMC BVR interchangeably analyse motion....
The function of the human foot is described dichotomously as a compliant structure during mid-stance and stiff lever push-off. arch-spring windlass mechanisms, respectively, describe each these behaviours; however, their interaction has not been quantified to date. We hypothesized that by engaging mechanism with metatarsophalangeal joint (MTPJ) dorsiflexion, we would observe stiffening arch reduced energy absorption dissipation dynamic compressions foot. Using custom apparatus, MTPJ angle...
The arch of the human foot is unique among hominins as it compliant at ground contact but sufficiently stiff to enable push-off. These behaviours are partly facilitated by ligamentous plantar fascia whose role central two mechanisms. ideal windlass mechanism assumes that has a nearly constant length directly couple toe dorsiflexion with change in shape. However, also stretches and then shortens throughout gait arch-spring stores releases elastic energy. We aimed understand how extensible...
The thumb carpometacarpal (CMC) joint is often affected by osteoarthritis--a mechanically mediated disease. Pathomechanics of the CMC joint, however, are not thoroughly understood due to a paucity in vivo data. We documented normal, kinematics during isometric functional tasks. hypothesized there would be motion these tasks and that this differ with sex age group. also sought determine whether rotations at were coupled trapezium moved respect third metacarpal. Forty-six asymptomatic subjects...
Barefoot (BF) running has recently increased in popularity with claims that it is more natural and may result fewer injuries due to a reduction impact loading. However, novice BF runners do not necessarily immediately switch forefoot strike pattern. This increase mechanical parameters such as loading rate, which been associated certain running-related injuries, specifically, tibial stress fractures, patellofemoral pain, plantar fasciitis. The purpose of this study was examine changes between...
A typical gait analysis data collection consists of a series discrete trials, where participant initiates gait, walks through motion capture volume, and then terminates gait. This is not normal 'everyday' pattern, yet measurements are considered representative walking. However, walking speed, global descriptor quality that can affect joint kinematics kinetics, may be different during compared to continuous Therefore, the purpose this study was investigate effect versus trials on speed...
Developing the ability to habitually walk and run upright on two feet is one of most significant transformations have occurred in human evolution. Many musculoskeletal adaptations enabled bipedal locomotion, including dramatic structural changes foot and, particular, evolution an elevated medial arch. The foot's arched structure has previously been assumed play a central role directly propelling center mass forward upward through leverage about toes spring-like energy recoil. However, it...
Abstract Background Wrist injuries limit function and can lead to long-term pain disability. Current interventions aim decrease restore healthy function; however, during dynamic motion has not been fully characterized. Four-dimensional computed tomography (4DCT) capture bony providing new insight the wrist joint. Materials Methods Ten young participants were scanned using a 4DCT scanner three-dimensional (3D) models made of radius carpal bones. Using helical axes local coordinate systems for...
If human skeletal shape increases proportionally with size (isometric scaling), we would expect exponential in joint contact stress as individuals become larger. However, if changes a function of (allometric this can mitigate by changing the surface area (SA)-to-volume ratio. Here, explored whether foot bones scale allometry and, so, to identify features that are associated bone size. Computed tomography scans two largest (talus, calcaneus) were obtained from 36 healthy individuals. We...
Introduction Specific scapula shapes are associated with full-thickness tears of the supraspinatus tendon. A primary role is to actively stabilize glenohumeral joint against muscles that generate destabilizing shear forces. Mechanisms increase load required perform this stabilizing function may an individual's susceptibility tears. Previous work has shown tear-associated action deltoid during arm-raising, but no investigated whether inhibit potential itself. Methods We combined statistical...