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The purpose of this study was to assess if wearing augmented and virtual reality googles affect the balance of older adults. Nine community dwelling older adults who could walk without assistive devices participated in the pilot study. Balance was assessment using an AMTI OR6-700 Force Plate with an...
Labral tears in developmental dysplasia of the hip (DDH) may be related to abnormal loads at the acetabular edge. Thus, quantifying in-vivo edge loads can help us clarify the reasons for labral tears. Using image-based musculoskeletal models (MSM), we developed new analyses to project hip joint reac...
Insertion torque and insertion energy for dental implants are influenced by bone density, implant geometry, surface roughness, and drill protocol to different degrees. The aim of this study was to investigate the influence of these factors on insertion torque and energy. Torque, displacement, and tw...
Previous models of articular cartilage permeability were successful in demonstrating the effect of the collagen fibres on the anisotropy of the permeability, but could not reproduce some experimental results under large deformations. The proposed model, which accounts not only for fibre reorientatio...
The objective of this study was to verify the reproducibility of a joint stress protocol previously to the electromyographic evaluations in subjects with PFD. Twenty women with PFD where evaluated through presence of pain, questionnaires, specific clinical tests for PFD, and superficial electromyogr...
The aim of this study is to measure the gait features and global position of the pedestrian in the outdoor environment by using shoe attached IMU sensor and GPS, and visualize the stride length on a geographical map in order to investigate the explicit factors in the walkway that changed the gait pa...
A fibril-reinforced poroviscoelastic material model was introduced to model anterior cruciate ligament stress-relaxation behaviour in tension. The proposed model with an exponential fibril formulation was able to capture the stress-relaxation response at physiological strain levels. It provides insi...
3D printing is increasingly used to design patient-specific medical products [1], such as orthoses. Indeed, 3D printed foot orthoses (FO) have an interesting potential as they can include optimized patterns to locally adjust the mechanical properties according to each patient’s gait pattern. Model...
The Functional movement screen (FMS) is an assessment tool for identifying physical weaknesses and asymmetries prevention potential injury. There has been plenty of FMS documents regarding to many sports. However, there are few FMS documents been conducted for baseball. Therefore, the purposes of th...
The influence of heel pad and shoe mechanical properties on the ground reaction forces were examined during the impact phase of running. Heel pad mechanical properties were measured in cadaver heel pads under a range of conditions reflecting how the heel pad can be surrounded in a shoe. These mechan...
Underrepresented high school students in the STEM fields received interest-tailored lectures on biomechanics during a 5-week summer program. Changes in student engagement and performance between interest-tailored and generic lectures was assessed. Interest-tailored lectures showed an increase in lec...
Usage of prophylactic ankle braces have been shown to reduce risk of injury while performing various jumping tasks, however the magnitude of the force acting on the knee has not been quantified. This study examined sagittal and frontal plane knee angle and moment at peak ground reaction force (vGRF)...
The purpose of this study was to determine the effect load carriage has on natural ankle quasi-stiffness (NAS). Fourteen college-aged healthy individuals underwent an instrumented gait analysis while walking over ground at 0.8 statures/second (st/s) under three load carriage conditions. Data were an...
The purpose of this study was to examine relationship between kinetics and effectiveness of mechanical energy utilization during lifting phase of squat. Ten male students majoring physical education. Participants completed one repetition of a high-bar back squat using 75% of 1RM. Sagittal plane kine...
We developed a novel, multiple-input single-output, closed-loop, parametric identification method to quantify the EMG-torque relations for central controller and stretch reflex contributions to human postural control. Our results demonstrated that the relation for the reflex pathway has higher bandw...
Patellofemoral pain (PFP) reduces quality of life for thousands of adolescents each year. Having previously demonstrated that patellar maltracking is associated with PFP in adolescents, our study aimed to determine if PF shape is altered in adolescents with PFP and if shape influences patellar maltr...
CT-based finite element (FE) modelling can be used to assess bone fragility around the knee after spinal cord injury (SCI), but models must be validated using realistic loading scenarios. Activities such as wheelchair transfer are likely associated with biaxial loads (e.g., compression + torsion), h...
A medializing calcaneal osteotomy (MCO) is frequently performed to correct adult-aquired flatfoot deformities, but a lack in reliable 3D data associated to clinical/surgical parameters still exists. This study was aimed at reconstructing relevant 3D surgical parameters using a Cone-Beam CT (CBCT) in...
Functional Movement Screen (abbreviation: FMS) has been widely used to assess physical asymmetry for athletes. This study aimed to assess the FMS score and compare the differences between volleyball and track and field athletes. The results were found that more volleyball players got a lower score i...
In this paper, we present a novel smart wearable and wireless body-fixed inertial sensor (i-Sens) based design for estimation of joint kinematics in the sagittal plane. Preliminary testing has been done on normal volunteers with this bodyworn i-Sens sensors kept at knee and hip level on one side. Th...
The current standard of care in concussion management involves removal from participation and recovery monitoring via a multifaceted array of measurements. Several established and commonly used methods are used to quantify balance dysfunction after concussion. Emerging research suggests than in addi...
Indian infantry soldiers exposed to uphill terrain to fortify their duties with carrying different military loads which influence them to adapt the environmental stress and improve their combat readiness. The gait kinematic changes of the combined effect of load and grade may influence to recruit th...
In reverse shoulder arthroplasty (RSA), controversy exists over whether to repair the subscapularis and infraspinatus muscles. The objectives of this study were to investigate the effect of rotator cuff deficiencies and repairs on deltoid force in RSA and assess for any interaction with humeral impl...
Shin splints are common in high-arched runners, which may be related to rear-foot over-supination during toe-off caused by forefoot eversion. It was reported that the forefoot lateral wedge insole could decrease the supination angle of the rear-foot during toe-off. The purpose of this study was to c...
Controlled micromotion between bone fragments is a vital component of fracture healing. Distal femur fractures are stabilized using locking plates and the functional stiffness of this construct is sensitive to implant geometry, material, and bridge span (the distance between screws crossing the frac...
Walking at high speeds for longer periods feels uncomfortable and is fatiguing. This study compares ankle flexor and extensor strength prior to and following 35 or 47 min fast walking. Following the walking period, isometric maximal ankle dorsiflexor and plantarflexor strength was reduced with 25% a...
Creep, a gradual length change under constant load, may influence how someone senses pain. This study sought to determine if there were local or distal changes to mechanical pain sensitivity following a creep-inducing trunk flexion exposure. Findings showed inconsistent sensitivity changes immediate...
Our understanding of the relationship between 3D bone shape and knee osteoarthritis (OA), as well as our ability to investigate potential causative factors of OA, has been hampered by the time intensive nature of manually segmenting bone from MR images. Thus, we aim to develop and validate a fully a...
This study aimed to identify differences in contact force pathways at the interface between the acetabular cup and femoral head. We have observed different locations of peak contact forces for different activities of daily living, which could lead to different wear rates in patients depending on act...
Spatiotemporal gait asymmetries are a common feature of walking post-stroke. Although reducing asymmetry is a common objective of rehabilitation, the functional benefits of improving symmetry are not well understood. Here, we determined how manipulation of step length asymmetry influenced dynamic ba...
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