Marjolein M. van der Krogt
Authored
19 records found
Applying Stretch to Evoke Hyperreflexia in Spasticity Testing
Velocity vs. Acceleration
The Amsterdam Foot Model
A clinically informed multi-segment foot model developed to minimize measurement errors in foot kinematics
Accurate and reliable measurement of the severity of dystonia is essential for the indication, evaluation, monitoring and fine‐tuning of treatments. Assessment of dystonia in children and adolescents with dyskinetic cerebral palsy (CP) is now commonly performed by visual evalu ...
Towards automated video-based assessment of dystonia in dyskinetic cerebral palsy
A novel approach using markerless motion tracking and machine learning
Introduction: Video-based clinical rating plays an important role in assessing dystonia and monitoring the effect of treatment in dyskinetic cerebral palsy (CP). However, evaluation by clinicians is time-consuming, and the quality of rating is dependent on experience. The aim ...
Precision of determining bone pose and marker position in the foot and lower leg from computed tomography scans
How low can we go in radiation dose?
Interacting effects of AFO stiffness, neutral angle and footplate stiffness on gait in case of plantarflexor weakness
A predictive simulation study
To maximize effects of dorsal leaf ankle foot orthoses (AFOs) on gait in people with bilateral plantarflexor weakness, the AFO properties should be matched to the individual. However, how AFO properties interact regarding their effect on gait function is unknown. We studied th ...
Instrumented assessment of motor function in dyskinetic cerebral palsy
A systematic review
Background: In this systematic review we investigate which instrumented measurements are available to assess motor impairments, related activity limitations and participation restrictions in children and young adults with dyskinetic cerebral palsy. We aim to classify these ins ...
Background: The stiffness of a dorsal leaf AFO that minimizes walking energy cost in people with plantarflexor weakness varies between individuals. Using predictive simulations, we studied the effects of plantarflexor weakness, passive plantarflexor stiffness, body mass, and w ...
How normal is normal
Consequences of stride to stride variability, treadmill walking and age when using normative paediatric gait data
Neuromusculoskeletal models can be used to evaluate aberrant muscle function in cerebral palsy (CP), for example by estimating muscle and joint contact forces during gait. However, to be accurate, models should include representative musculotendon parameters. We aimed to estim ...
Accurate predictive simulations of human gait rely on optimisation criteria to solve the system's redundancy. Defining such criteria is challenging, as the objectives driving the optimization of human gait are unclear. This study evaluated how minimising various physiologicall ...
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 calcula ...
Background: Children with cerebral palsy often show deviating calf muscle activation patterns during gait, with excess activation during early stance and insufficient activation during push-off. Research question: Can children with cerebral palsy improve their calf muscle acti ...
Background: Spasticity, i.e. stretch hyperreflexia, increases joint resistance similar to symptoms like hypertonia and contractures. Botulinum neurotoxin-A (BoNT-A) injections are a widely used intervention to reduce spasticity. BoNT-A effects on spasticity are poorly understo ...
Contributed
1 records found