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Skin marker-based versus bone morphology-based coordinate systems of the hindfoot and forefoot

Hulshof, Chantal M. (author), Schallig, Wouter (author), van den Noort, Josien C. (author), Streekstra, Geert J. (author), Kleipool, Roeland P. (author), GG Dobbe, Johannes (author), Maas, Mario (author), Harlaar, J. (author), van der Krogt, Marjolein M. (author)

Segment coordinate systems (CSs) of marker-based multi-segment foot models are used to measure foot kinematics, however their relationship to the underlying bony anatomy is barely studied. The aim of this study was to compare marker-based CSs (MCSs) with bone morphology-based CSs (BCSs) for the hindfoot and forefoot. Markers were placed on...

journal article 2024

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A Three Dimensional Spring-Mass Model for Bipedal Locomotion and Prosthetic Leg Design

Sleijfer, Josh (author)

Humans are efficient at moving due to their exceptional mastery of bipedal locomotion. Several models have been made that attempt to model the motion of the centre of mass with a spring-mass system with various degree of success. For example, a two dimensional model tracks the height of the centre of mass well and a three dimensional model...

bachelor thesis 2023

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Accessible instrumented gait analysis in rehabilitation: Implementation of accessible instrumented gait analysis in the current care path in Basalt rehabilitation clinic The Hague

van Deelen, Sanne (author)

At Basalt rehabilitation clinic The Hague, gait analysis is currently mostly observational. No objective measures are used and there is no systematic use of recordings. The aim of this research is to find and verify an accessible instrumented gait analysis method that could be implemented in the current care path at Basalt The Hague. The current...

master thesis 2023

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Performance of a Mobile 3D Camera to Evaluate Simulated Pathological Gait in Practical Scenarios

Guffanti, Diego (author), Lemus Perez, D.S. (author), Vallery, H. (author), Brunete, Alberto (author), Hernando, Miguel (author), Horemans, H.L.D. (author)

Three-dimensional (3D) cameras used for gait assessment obviate the need for bodily markers or sensors, making them particularly interesting for clinical applications. Due to their limited field of view, their application has predominantly focused on evaluating gait patterns within short walking distances. However, assessment of gait...

journal article 2023

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Sensitivity of a coupled modelling workflow to knee marker displacement: Determining the sensitivity of a coupled modelling workflow to variations in marker data retrieved from gait analysis

Wildöer, David (author)

To better understand and predict osteoarthritis, researchers are developing so-called coupled modelling workflows. Coupled workflows convert data from gait analysis studies to subject-specific tissue mechanical response estimations through the use of musculoskeletal and finite element models. The tissue mechanical response inside the joint is...

master thesis 2022

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Measuring fall risk of the elderly with IMU sensors by developing a Convolutional Neural Network

Claassen, Carlijn (author)

The combination of the high number and the consequences of falls in older adults led to the development of fall risk assessments; non-sensor-based and sensor-based. Multiple studies used ML for older adults' fall risk prediction using raw IMU data. This study's objective was to develop a DL algorithm that predicts the fall risk of people living...

master thesis 2022

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Design of ankle-knee prostheses using predictive simulations

Smit, Nerissa (author)

There is an increasing need for transfemoral prostheses that provide gait support, stability, safety and comfort. Although there are many prostheses available in different levels of complexity and price, there is still room for improvement. It has been proved that the cost of transport (CoT) for walking is significantly increased for...

master thesis 2022

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The Amsterdam Foot Model: a clinically informed multi-segment foot model developed to minimize measurement errors in foot kinematics

Schallig, Wouter (author), van den Noort, Josien C. (author), Piening, Marjolein (author), Streekstra, Geert J. (author), Maas, Mario (author), van der Krogt, Marjolein M. (author), Harlaar, J. (author)

Background: Foot and ankle joint kinematics are measured during clinical gait analyses with marker-based multi-segment foot models. To improve on existing models, measurement errors due to soft tissue artifacts (STAs) and marker misplacements should be reduced. Therefore, the aim of this study is to define a clinically informed, universally...

journal article 2022

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Reliability and Validity of IMU-Based Foot Progression Angle Measurement under Different Gait Retraining Strategies

Urbanus, Francine C.A. (author), Grayson, Jane (author), Harlaar, J. (author), Simic, Milena (author)

Load modifying gait retraining strategies, such as changing the foot progression angle (FPA) to toe-in and toe-out gait, are used for people with medial knee osteoarthritis. The FPA can be measured using a pressure sensitive walkway (PSW), but inertial measurement units (IMUs) are considered more suitable for clinical use. This study...

journal article 2022

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Design of Interface for Gait Assessment in Spinal Cord Injury

Kempske, Rebekah (author)

Spinal cord injuries (SCI) occur when damage to any part of the spinal cord is sustained. Depending on what vertebrae segment the injury occurs, the patient will develop paraplegia or tetraplegia and have a complete or incomplete spinal cord injury. After sustaining a spinal cord injury, the patient must undergo rehabilitation. <br/><br/>For...

master thesis 2021

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Automatic gait event detection in paediatric pathological gait

Sansgiri, Sailee (author)

<b>Introduction: </b>Spatio-temporal parameters (STP), calculated from 3D gait analysis, are frequently used for treatment planning and evaluation in Cerebral Palsy (CP). To calculate these parameters, accurate determination of gait events (i. e. initial contact (IC) and foot off (FO)) is essential. Previous research on the performance of...

master thesis 2021

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The influence of soft tissue artifacts on multi-segment foot kinematics

Schallig, Wouter (author), Streekstra, Geert J. (author), Hulshof, Chantal M. (author), Kleipool, Roeland P. (author), Dobbe, Johannes G.G. (author), Maas, Mario (author), Harlaar, J. (author), van der Krogt, Marjolein M. (author), van den Noort, Josien C. (author)

Movement of skin markers with respect to their underlying bone (i.e. soft tissue artifacts (STAs)) might corrupt the accuracy of marker-based movement analyses. This study aims to quantify STAs in 3D for foot markers and their effect on multi-segment foot kinematics as calculated by the Oxford and Rizzoli Foot Models (OFM, RFM). Fifteen...

journal article 2021

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Wearable Sensor-Based Real-Time Gait Detection: A Systematic Review

Prasanth, H. (author), Caban, Miroslav (author), Keller, Urs (author), Courtine, Grégoire (author), Ijspeert, Auke J. (author), Vallery, H. (author), Von Zitzewitz, Joachim (author)

Gait analysis has traditionally been carried out in a laboratory environment using expensive equipment, but, recently, reliable, affordable, and wearable sensors have enabled integration into clinical applications as well as use during activities of daily living. Real-time gait analysis is key to the development of gait rehabilitation techniques...

journal article 2021

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Towards validation and standardization of automatic gait event identification algorithms for use in paediatric pathological populations

Visscher, Rosa M.S. (author), Sansgiri, Sailee (author), Freslier, Marie (author), Harlaar, J. (author), Brunner, Reinald (author), Taylor, William R. (author), Singh, Navrag B. (author)

Background: To analyse and interpret gait patterns in pathological paediatric populations, accurate determination of the timing of specific gait events (e.g. initial contract – IC, or toe-off – TO) is essential. As currently used clinical identification methods are generally subjective, time-consuming, or limited to steps with force platform...

journal article 2021

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A most painful knee does not induce interlimb differences in knee and hip moments during gait in patients with knee osteoarthritis

Bakker, Nienke F. (author), Schrijvers, Jim C. (author), van den Noort, Josien C. (author), Hall, Michelle (author), van der Krogt, Marjolein M. (author), Harlaar, J. (author), van der Esch, Martin (author)

Background: Patients with knee osteoarthritis can adapt their gait to unload the most painful knee joint in order to try to reduce pain and improve physical function. However, these gait adaptations can cause higher loads on the contralateral joints. The aim of the study was to investigate the interlimb differences in knee and hip frontal...

journal article 2021

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Neuromechanical assessment of knee joint instability during perturbed gait in patients with knee osteoarthritis

Schrijvers, Jim C. (author), van den Noort, Josien C. (author), van der Esch, Martin (author), Harlaar, J. (author)

Knee joint instability is frequently reported by patients with knee osteoarthritis (KOA). Objective metrics to assess knee joint instability are lacking, making it difficult to target therapies aiming to improve stability. Therefore, the aim of this study was to compare responses in neuromechanics to perturbations during gait in patients with...

journal article 2021

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Generic scaled versus subject-specific models for the calculation of musculoskeletal loading in cerebral palsy gait: Effect of personalized musculoskeletal geometry outweighs the effect of personalized neural control

Kainz, Hans (author), Wesseling, M.G.H. (author), Jonkers, Ilse (author)

Background: Musculoskeletal modelling is used to assess musculoskeletal loading during gait. Linear scaling methods are used to personalize generic models to each participant's anthropometry. This approach introduces simplifications, especially when used in paediatric and/or pathological populations. This study aimed to compare results from...

journal article 2021

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Marker placement sensitivity of the Oxford and Rizzoli foot models in adults and children

Schallig, Wouter (author), van den Noort, Josien C. (author), Maas, Mario (author), Harlaar, J. (author), van der Krogt, Marjolein M. (author)

Understanding the effect of individual marker misplacements is important to improve the repeatability and aid to the interpretation of multi-segment foot models like the Oxford and Rizzoli Foot Models (OFM, RFM). Therefore, this study aimed to quantify the effect of controlled anatomical marker misplacement on multi-segment foot kinematics (i...

journal article 2021

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Towards prevention of overuse lower limb injury with a smart wearable for military use

Ahsmann, Laura (author)

This thesis explains the research into and implementation of overuse lower-limb injury prediction among military recruits, using wearable plantar-pressure sensing and biomechanical gait algorithms. The research has been done with the purpose of designing a usable, affordable and accurate injury-prevention tool, increasing both military wellbeing...

master thesis 2020

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Sequential Human Gait Classification with Distributed Radar Sensor Fusion

Li, H. (author), Mehul, A. (author), Kernec, J. Le (author), Gurbuz, S. Z. (author), Fioranelli, F. (author)

This paper presents different information fusion approaches to classify human gait patterns and falls in a radar sensors network. The human gaits classified in this work are both individual and sequential, continuous gait collected by a FMCW radar and three UWB pulse radar placed at different spatial locations. Sequential gaits are those...

journal article 2020