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Augmented reality navigation for minimally invasive craniosynostosis surgery: a phantom study

Thabit, Abdullah (author), Benmahdjoub, Mohamed (author), van Veelen, Marie Lise C. (author), Niessen, W.J. (author), Wolvius, Eppo B. (author), van Walsum, T. (author)

Purpose: In minimally invasive spring-assisted craniectomy, surgeons plan the surgery by manually locating the cranial sutures. However, this approach is prone to error. Augmented reality (AR) could be used to visualize the cranial sutures and assist in the surgery planning. The purpose of our work is to develop an AR-based system to...

journal article 2022

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Quantification of the development of trunk control in healthy infants using inertial measurement units

Blok, Janneke (author), Poggensee, K. (author), Lemus Perez, D.S. (author), Kok, M. (author), Pangalila, Robert F. (author), Vallery, H. (author), Deferme, Jolien (author), Toussaint-Duyster, Leontien (author), Horemans, H.L.D. (author)

Trunk motor control is essential for the proper functioning of the upper extremities and is an important predictor of gait capacity in children with delayed development. Early diagnosis and intervention could increase the trunk motor capabilities in later life, but current tools used to assess the level of trunk motor control are largely...

conference paper 2022

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Feasibility and validity of a single camera CNN driven musculoskeletal model for muscle force estimation during upper extremity strength exercises: Proof-of-concept

Noteboom, L. (author), Hoozemans, Marco J.M. (author), Veeger, H.E.J. (author), van der Helm, F.C.T. (author)

Muscle force analysis can be essential for injury risk estimation and performance enhancement in sports like strength training. However, current methods to record muscle forces including electromyography or marker-based measurements combined with a musculoskeletal model are time-consuming and restrict the athlete's natural movement due to...

journal article 2022

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Classification of Wheelchair Related Shoulder Loading Activities from Wearable Sensor Data: A Machine Learning Approach

de Vries, Wiebe H.K. (author), Amrein, Sabrina (author), Arnet, Ursina (author), Mayrhuber, Laura (author), Ehrmann, Cristina (author), Veeger, H.E.J. (author)

Shoulder problems (pain and pathology) are highly prevalent in manual wheelchair users with spinal cord injury. These problems lead to limitations in activities of daily life (ADL), labor- and leisure participation, and increase the health care costs. Shoulder problems are often associated with the long-term reliance on the upper limbs, and...

journal article 2022

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Electromyography-driven model-based estimation of ankle torque and stiffness during dynamic joint rotations in perturbed and unperturbed conditions

Cop, Christopher P. (author), Schouten, A.C. (author), Koopman, Bart (author), Sartori, Massimo (author)

The simultaneous modulation of joint torque and stiffness enables humans to perform large repertoires of movements, while versatilely adapting to external mechanical demands. Multi-muscle force control is key for joint torque and stiffness modulation. However, the inability to directly measure muscle force in the intact moving human prevents...

journal article 2022

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Management of displaced humeral surgical neck fractures in daily clinical practice: hanging does not re-align the fracture

Spek, Reinier W.A. (author), Hoogervorst, Lotje A. (author), Elias, Michaëla E.C. (author), Jaarsma, Ruurd L. (author), Veeger, H.E.J. (author), Doornberg, Job N. (author), Jutte, Paul C. (author), van den Bekerom, Michel P.J. (author)

Introduction: It is unclear if the collar and cuff treatment improve alignment in displaced surgical neck fractures of the proximal humerus. Therefore, this study evaluated if the neckshaft angle and extent of displacement would improve between trauma and onset of radiographically visible callus in non-operatively treated surgical neck...

journal article 2022

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Shoulder kinematics and muscle activity following latissimus dorsi transfer for massive irreparable posterosuperior rotator cuff tears in shoulders with pseudoparalysis

Gurnani, Navin (author), Willems, W. Jaap (author), van Deurzen, Derek F.P. (author), Weening, Alexander A. (author), Bouwer, Joran (author), Janssen, Thomas W.J. (author), Veeger, H.E.J. (author)

Background: The aim of this study was to evaluate the thoracohumeral (TH) and glenohumeral (GH) motion with muscle activity after latissimus dorsi transfer (LDT) in a shoulder with a massive irreparable posterosuperior rotator cuff tear (MIRT) and pseudoparalysis compared with the asymptomatic contralateral shoulder (ACS). Methods: We...

journal article 2022

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Individualised Ball Speed Prediction in Baseball Pitching Based on IMU Data

Gomaz, L. (author), Veeger, H.E.J. (author), van der Graaff, E. (author), van Trigt, B. (author), van der Meulen, F.H. (author)

Ball velocity is considered an important performance measure in baseball pitching. Proper pitching mechanics play an important role in both maximising ball velocity and injury-free participation of baseball pitchers. However, an individual pitcher’s characteristics display individuality and may contribute to velocity imparted to the ball. The...

journal article 2021

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Establishing the Role of Elbow Muscles by Evaluating Muscle Activation and Co-contraction Levels at Maximal External Rotation in Fastball Pitching

van Trigt, B. (author), Galjee, E.N. (author), Hoozemans, Marco J.M. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)

Background: Baseball pitching is associated with a high prevalence of ulnar collateral ligament injuries, potentially due to the high external valgus load on the medial side of the elbow at the instant of maximal shoulder external rotation (MER). In-vitro studies show that external valgus torque is resisted by the ulnar collateral ligament but...

journal article 2021

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The influence of the exclusion of central necrosis on [¹⁸F]FDG PET radiomic analysis

Noortman, Wyanne A. (author), Vriens, Dennis (author), Mooij, C.D.Y. (author), Slump, Cornelis H. (author), Aarntzen, Erik H. (author), van Berkel, Anouk (author), Timmers, Henri J.L.M. (author), Bussink, Johan (author), Meijer, Tineke W.H. (author), de Geus-Oei, Lioe Fee (author), van Velden, Floris H.P. (author)

Background: Central necrosis can be detected on [¹⁸F]FDG PET/CT as a region with little to no tracer uptake. Currently, there is no consensus regarding the inclusion of regions of central necrosis during volume of interest (VOI) delineation for radiomic analysis. The aim of this study was to assess how central necrosis affects...

journal article 2021

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Theta but not beta power is positively associated with better explicit motor task learning

van der Cruijsen, J. (author), Manoochehri, M. (author), Jonker, Z.D. (author), Andrinopoulou, Eleni Rosalina (author), Frens, Maarten A. (author), Ribbers, G.M. (author), Schouten, A.C. (author), Selles, R.W. (author)

Neurophysiologic correlates of motor learning that can be monitored during neurorehabilitation interventions can facilitate the development of more effective learning methods. Previous studies have focused on the role of the beta band (14–30 Hz) because of its clear response during motor activity. However, it is difficult to discriminate...

journal article 2021

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Progression along data-driven disease timelines is predictive of Alzheimer's disease in a population-based cohort

Venkatraghavan, Vikram (author), Vinke, Elisabeth J. (author), Bron, Esther E. (author), Niessen, W.J. (author), Arfan Ikram, M. (author), Klein, S. (author), Vernooij, Meike W. (author)

Data-driven disease progression models have provided important insight into the timeline of brain changes in AD phenotypes. However, their utility in predicting the progression of pre-symptomatic AD in a population-based setting has not yet been investigated. In this study, we investigated if the disease timelines constructed in a case...

journal article 2021

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Machine Learning to Improve Orientation Estimation in Sports Situations Challenging for Inertial Sensor Use

van Dijk, M.P. (author), Kok, M. (author), Berger, Monique A.M. (author), Hoozemans, Marco J.M. (author), Veeger, H.E.J. (author)

In sports, inertial measurement units are often used to measure the orientation of human body segments. A Madgwick (MW) filter can be used to obtain accurate inertial measurement unit (IMU) orientation estimates. This filter combines two different orientation estimates by applying a correction of the (1) gyroscope-based estimate in the...

journal article 2021

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Fixation effects of different types of cannulated screws on vertical femoral neck fracture: A finite element analysis and experimental study

Zhan, Shi (author), Jiang, Dajun (author), Ling, Ming (author), Ding, Jian (author), Yang, Kai (author), Duan, Lei (author), Tsai, Tsung Yuan (author), Feng, Yong (author), van Trigt, B. (author), Jia, Weitao (author), Zhang, Changqing (author), Hu, Hai (author)

Femoral neck fractures (FNFs) in young patients usually result from high-energy violence, and the vertical transcervical type is typically challenging for its instability. FNFs are commonly treated with three cannulated screws (CS), but the role of screws type on fixation effects (FE) is unclear. The purpose of this study was to evaluate the...

journal article 2021

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Quantifying neural and non-neural components of wrist hyper-resistance after stroke: Comparing two instrumented assessment methods

Andringa, Aukje (author), Meskers, Carel (author), van de Port, Ingrid (author), Zandvliet, Sarah (author), Scholte, Larissa (author), de Groot, J.H. (author), Kwakkel, Gert (author), van Wegen, Erwin (author)

Patients with poor upper limb motor recovery after stroke are likely to develop increased resistance to passive wrist extension, i.e., wrist hyper-resistance. Quantification of the underlying neural and non-neural elastic components is of clinical interest. This cross-sectional study compared two methods: a commercially available device ...

journal article 2021

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The ulnar collateral ligament loading paradox between in-vitro and in-vivo studies on baseball pitching (narrative review)

van Trigt, B. (author), Vliegen, Liset (author), Leenen, Ton (author), Veeger, H.E.J. (author)

Ulnar collateral ligament (UCL) weakening or tears occur in 16% of professional baseball pitchers. To prevent players from sustaining a UCL injury, it is important to understand the relationship between the UCL properties and elbow stabilizers with the load on the UCL during pitching. In-vitro studies showed that the ultimate external valgus...

review 2021

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Digital biomarkers and algorithms for detection of atrial fibrillation using surface electrocardiograms: A systematic review: Digital Biomarkers for AF in Surface ECGs

Wesselius, F.J. (author), van Schie, M.S. (author), de Groot, N.M.S. (author), Hendriks, R.C. (author)

Aims: Automated detection of atrial fibrillation (AF) in continuous rhythm registrations is essential in order to prevent complications and optimize treatment of AF. Many algorithms have been developed to detect AF in surface electrocardiograms (ECGs) during the past few years. The aim of this systematic review is to gain more insight into...

review 2021

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Graph-time spectral analysis for atrial fibrillation

Sun, M. (author), Isufi, E. (author), de Groot, N.M.S. (author), Hendriks, R.C. (author)

Atrial fibrillation is a clinical arrhythmia with multifactorial mechanisms still unresolved. Time-frequency analysis of epicardial electrograms has been investigated to study atrial fibrillation. However, deeper understanding can be achieved by incorporating the spatial dimension. Unfortunately, the physical models describing the spatial...

journal article 2020

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Effects of a Disturbed Kinetic Chain in the Fastball Pitch on Elbow Kinetics and Ball Speed

Leenen, A.J.R. (author), van Trigt, B. (author), Hoozemans, Marco J.M. (author), Veeger, H.E.J. (author)

The purpose of the present study was to investigate the effect of an experimentally imposed kinetic chain disturbance in baseball pitching on ball speed and elbow kinetics. The experimental design consisted of two (within-subject) conditions. In one condition there was no manipulation (control condition). The other condition involved a...

journal article 2020

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Are UCL Injuries a Matter of Bad Luck?: The Role of Variability and Fatigue Quantified

van Trigt, B. (author), Leenen, A.J.R. (author), Hoozemans, Marco J.M. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)

Upper extremity injuries are common in baseball. One of these is the ulnar collateral ligament (UCL) injury. In the field of sports injuries, most research focuses on average kinematics and kinetics between subjects, whereas focusing on within-subject variability appears to be more relevant for determining injury risk. We constructed a simple...

journal article 2020