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Constant torque gravity compensation: Designing a wrist support for Duchenne Muscular Dystrophy patients

van der Burgh, Bas (author)

Duchenne Muscular Dystrophy (DMD) patients suffer from a severe form of progressive muscular weakness. Consequently, as the disease progresses these patients become more and more dependent on assistive devices for their daily activities. For instance lifting their arms against gravity already becomes challenging. So far, a considerable amount of...

master thesis 2022

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Design Feasibility of an Energy-efficient Wrist Flexion-Extension Exoskeleton using Compliant Beams and Soft Actuators

Amoozandeh, A. (author), Caasenbrood, Brandon (author)

Passive and active exoskeletons have been used over recent decades. However, regarding many physiological systems, we see that the majority explore both active and passive elements to minimize energy consumption while retaining proper motion control. In light of this, we propose a design that combines compliant mechanisms as passive support...

conference paper 2022

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Design of an experimental protocol to test voluntary reflex modulation in the wrist flexor

Mulder, Babette (author)

Background: Determining how the reflex voluntarily modulates while performing activities of daily living (ADL), and understanding how this modulation might differ between healthy subjects and patients with motor disorders, can aid in developing a rehabilitative program to improve the functional performance of thewrist. The current study designs...

master thesis 2021

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Design and validation of a 3D printed curved hydraulic cylinder for a prosthetic wrist joint

Burema, Arine (author)

Introduction: Amputees still experience problems with the use of their upper limb prostheses, mainly in the lack of comfort and functionality. This results in rejection of the prosthesis or overuse injuries due to compensatory movements. The comfort and functionality should be improved by reducing weight and increasing the degrees of freedom....

master thesis 2021

document

Development of a 3D Printed Patient-Specific Orthosis for Wrist Immobilization in Long-Term Use

Chung, Jeeyong (author)

Background: Wrist immobilization orthosis is a commonly adopted treatment method for wrist regarding pathologies. In recent years, a group of 3D-printed immobilization orthosis for the upper extremity has been proposed. However, they were mainly developed as substitutes for traditional casts for the upper extremity for short-term usage. There...

master thesis 2021

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The future of fracture management: Feasibility of in-house design, production and implementation of 3D printed wrist casts for the treatment of distal radius fractures

Mooij, Charlotte (author)

INTRODUCTIOND istal radius fractures are traditionally treated with plaster casts. Although this has been the gold standard for treatment for years, it also comes with disadvantages. These are the weight, not being water-resistant and a lack of ventilation, leading to skin problems, itching and compromised hygiene. Furthermore, plaster has no...

master thesis 2021

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UNet-based Fully-automatic Segmentation of the Capitate from CT Images

Xue, Wenli (author)

Osteoarthritis (OA) is a degenerative joint disease and imposes an increasing burden on individuals and public health systems. Most prevalent joints are the knee, hip and hands, including the wrist. In order to enable early treatment of wrist OA, an early-detection method of cartilage loss, a characteristic symptom of OA, is needed. , CT images...

master thesis 2021

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Wrist Protection for Professional Goalkeepers

Aberle, Noor (author)

This report describes the design of a wrist protector for professional soccer goalkeepers. This project was part of the master’s thesis for the TU delft and has been performed in collaboration with Norbert Alblas and the Fieldlab UPPS. Due to the increasing intensity of the game, injuries are becoming more common among goalkeepers. These include...

master thesis 2021

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Design of an external patient specific guide for drilling a tunnel through the scaphoid

Hiemstra, Olivier (author)

In recent years, patient specific instrumentation (PSI) has shown to be a promising application of 3D printing in orthopedic surgery. By aiding the surgeon with accurate placement of instruments such as saws or drills, surgeries can be performed faster, and require less surgeon experience. While most of these devices interface directly with the...

master thesis 2020

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Two hands, one goal: Functional coupling in the wrist joints during a bimanual task

Pries, Rosanne (author)

Bimanual coordination is essential for the performance of daily activities, but the underlying motor control mechanisms are not yet fully understood. The goal of the present study is to identify the contribution of contralateral responses in the wrist joints to the performance of a bimanual task. Contralateral responses could possibly be used in...

master thesis 2020

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Stiffness and Pliability: Developing an Algorithm to Identify Intrinsic and Reflexive Stiffness during Voluntary Movement and a Shared Mental Model Making Cross-Disciplinary Collaboration Dynamics Meaningful to Engineers

van Koppen, Jorik (author)

System identification techniques to analyse movement disorders are in development, but concrete clinical evidence to receive broad support from the clinical world is lacking. This master thesis proposes two ways to accelerate their development as part of the master’s programmes in Mechanical Engineering and Science Communication. The Mechanical...

master thesis 2020

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Development of an automated passive wrist movement device for 4D CT scans

van der Linden, Job (author)

This project is initiated by Stan Buckens, a radiologist from the RadboudUMC, who believes in realizing passive four-dimensional (4D) CT scans for the wrist. At this moment the wrist is mainly scanned and reviewed statically in 3D. However, it is desirable to see what happens on a CT scan during movement (the fourth dimension) of the wrist, as...

master thesis 2020

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A New Take on Prosthetic Wrists: The Development of a 3 DoF, Hydraulically Powered Wrist Prosthesis

Belet, Tom (author)

Background: While new prosthetic hands are developed to increase functionality and allow more complex movements, prosthetic wrists are researched less. Although there are wrists available, primarily featuring 1 degree of freedom (DoF), only a few prototype 3 DoF wrists are currently known. These 3 DoF wrists usually have sufficient range of...

master thesis 2020

document

Design of a scalable tremor suppression brace for Essential Tremor patients

Jagers op Akkerhuis, Stijn (author)

This report presents a design proposal for a product that will suppress the tremor of patients diagnosed with Essential Tremor (ET). People suffering from ET are restricted in their ability to function in everyday life, due to a constraint of performing delicate movements. Simple tasks, such as drinking and eating are a great challenge for...

master thesis 2019

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A history of distal radius fracture disturbs processing of sensory feedback without influencing neuromuscular control in the wrist joint

Muurling, Marijn (author)

A distal radius fracture (DRF) is one of the most common fractures, especially in older women. Previous research shows that a DRF disturbs sensorimotor functions even eight weeks after finished treatment, which could influence neuromuscular control. The neuromuscular system exists of a sensory, motor and integration part, which all interact with...

master thesis 2018

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The design of an active, under-actuated, prosthetic wrist mechanism based on synergetic relations

Lenssen, Tomas (author)

Inspired by work of Montagnani et al. (2015), who found that for prosthetic hands a complex wrist mechanism worked functionally equal to a multi-DOF hand mechanism, new work has been set in motion to extrapolate and test this hypothesis. The goal of this work consisted of building a multi-DOF wrist mechanism, while it was crucial to keep the...

master thesis 2018

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Physical Activity Recognition using Wearable Accelerometers in Controlled and Free-Living Environments

Konsolakis, Kostas (author)

Physical activity recognition through wearables has enabled the development of novel applications in healthcare. Most of the existing studies focus on predicting activities using wearable sensors, either in a controlled or uncontrolled environment. However, there is not a clear distinction between these two environments. Hence, this thesis aimed...

master thesis 2018

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Multiple degrees of freedom wrist prostheses: Design of an electrically powered two DoF wrist prosthesis

Binda, Jasper (author)

Current wrist prostheses offer limited functionality regarding degrees of freedom and range of motion. A new two degrees of freedom wrist mechanism was designed and based on this concept a prototype was build and tested. Testing included generated torque measurements, externally applied torques, weight and size measurements. The prototype has a...

master thesis 2018

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Modeling the nonlinear cortical response in EEG evoked by wrist joint manipulation

Vlaar, M.P. (author), Birpoutsoukis, Georgios (author), Lataire, John (author), Schouten, A.C. (author), Schoukens, Johan (author), van der Helm, F.C.T. (author)

Joint manipulation elicits a response from the sensors in the periphery which, via the spinal cord, arrives in the cortex. The average evoked cortical response recorded using electroencephalography was shown to be highly nonlinear; a linear model can only explain 10% of the variance of the evoked response, and over 80% of the response is...

journal article 2018

document

Early shortening of wrist flexor muscles coincides with poor recovery after stroke

de Gooijer-van de Groep, Karin L. (author), de Groot, Jurriaan H. (author), van der Krogt, Hanneke (author), de Vlugt, E. (author), Arendzen, J. Hans (author), Meskers, Carel G.M. (author)

Background. The mechanism and time course of increased wrist joint stiffness poststroke and clinically observed wrist flexion deformity is still not well understood. The components contributing to increased joint stiffness are of neural reflexive and peripheral tissue origin and quantified by reflexive torque and muscle slack length and...

journal article 2018