Mario Maas

ORCID: 0000-0001-6785-5167
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About
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Research Areas
  • Autoimmune and Inflammatory Disorders Research
  • Sports injuries and prevention
  • Orthopedic Surgery and Rehabilitation
  • Rheumatoid Arthritis Research and Therapies
  • Lysosomal Storage Disorders Research
  • Foot and Ankle Surgery
  • Lower Extremity Biomechanics and Pathologies
  • Bone and Joint Diseases
  • Shoulder Injury and Treatment
  • Diabetic Foot Ulcer Assessment and Management
  • Orthopedic Infections and Treatments
  • Musculoskeletal synovial abnormalities and treatments
  • Advanced Neuroimaging Techniques and Applications
  • Advanced X-ray and CT Imaging
  • Trypanosoma species research and implications
  • Tendon Structure and Treatment
  • Elbow and Forearm Trauma Treatment
  • Bone fractures and treatments
  • Radiation Dose and Imaging
  • Systemic Lupus Erythematosus Research
  • Adolescent and Pediatric Healthcare
  • Studies on Chitinases and Chitosanases
  • Cerebral Palsy and Movement Disorders
  • Peripheral Nerve Disorders
  • Advanced MRI Techniques and Applications

Academic Center for Evidence-Based Sports Medicine
2015-2025

Health & Safety in Sports
2015-2025

University of Amsterdam
2016-2025

Amsterdam University Medical Centers
2018-2025

Amsterdam UMC Location University of Amsterdam
2015-2024

Vrije Universiteit Amsterdam
2008-2024

Isala
2010-2024

Public Risk Management Association
2021

Maasstad Ziekenhuis
2020

University Medical Center
2019

Abstract Purpose To propose a new quality scoring tool, METhodological RadiomICs Score (METRICS), to assess and improve research of radiomics studies. Methods We conducted an online modified Delphi study with group international experts. It was performed in three consecutive stages: Stage#1, item preparation; Stage#2, panel discussion among EuSoMII Auditing Group members identify the items be voted; Stage#3, four rounds exercise by panelists determine eligible for METRICS their weights. The...

10.1186/s13244-023-01572-w article EN cc-by Insights into Imaging 2024-01-17

<h3>Importance</h3> Approximately 3.4% of adults have ankle (tibiotalar) osteoarthritis and, among younger patients, is more common than knee and hip osteoarthritis. Few effective nonsurgical interventions exist, but platelet-rich plasma (PRP) injections are widely used, with some evidence efficacy in <h3>Objective</h3> To determine the effect PRP on symptoms function patients <h3>Design, Setting, Participants</h3> A multicenter, block-randomized, double-blinded, placebo-controlled clinical...

10.1001/jama.2021.16602 article EN JAMA 2021-10-26

Hindfoot malalignment is a recognized cause of foot and ankle disability. For preoperative planning clinical follow-up, reliable radiographic assessment hindfoot alignment important. The long axial view the are commonly used for this purpose. However, their comparative reliabilities unknown. As varus or valgus most pronounced during mid-stance gait, unilateral weight-bearing stance, in comparison with bilateral could increase measurement reliability. purpose study was to compare intra-...

10.1007/s00256-009-0857-9 article EN cc-by-nc Skeletal Radiology 2010-01-08

Peri-articular soft-tissue masses or ‘pseudotumours’ can occur after large-diameter metal-on-metal (MoM) resurfacing of the hip and conventional total replacement (THR). Our aim was to assess incidence pseudotumour formation identify risk factors for their in a prospective cohort study. A 119 patients who underwent 120 MoM THRs with femoral heads between January 2005 November 2007 were included Outcome scores, serum metal ion levels, radiographs CT scans obtained. Patients symptoms an...

10.1302/0301-620x.94b6.28373 article EN Journal of Bone and Joint Surgery - British Volume 2012-05-24

Findings from previous studies have suggested that subclinical inflammation of the synovium does not coincide with appearance rheumatoid arthritis (RA)-specific autoantibodies. This study was undertaken to examine relationship between presence autoantibodies, changes in synovium, and development over time a markedly larger, prospective study.

10.1002/art.38273 article EN Arthritis & Rheumatology 2013-11-19

To develop a protocol for diffusion-tensor imaging (DTI) of the complete upper legs and to demonstrate feasibility detection subclinical sports-related muscle changes in athletes after strenuous exercise, which remain undetected by using conventional T2-weighted magnetic resonance (MR) with fat suppression.The research was approved institutional ethics committee review board, volunteers provided written consent before study. Five male amateur long-distance runners underwent an MR examination...

10.1148/radiol.14140702 article EN Radiology 2014-10-03

To design a time-efficient patient-friendly clinical diffusion tensor MRI protocol and postprocessing tool to study the complex muscle architecture of human forearm.The 15-minute examination was done using 3 T system consisted of: T(1) -weighted imaging, dual echo gradient single-shot spin-echo echo-planar imaging (EPI) MRI. Postprocessing comprised signal-to-noise improvement by Rician noise suppression algorithm, image registration correct for motion eddy currents, correction...

10.1002/jmri.23608 article EN Journal of Magnetic Resonance Imaging 2012-02-14

In 10-20% of patients with subacute-onset idiopathic inflammatory myopathy (IIM), muscle biopsy is normal or shows nonspecific findings. MRI can be used as a triage test before and an add-on if the nondiagnostic.MRI scans skeletal muscles biopsies were evaluated prospectively in 48 suspected to have IIM. The interpretations compared definite diagnosis (based on European Neuromuscular Centre criteria response corticosteroids).The false negative rate (FNR) all was 0.23. Biopsies showing...

10.1002/mus.24307 article EN Muscle & Nerve 2014-06-03

Background: Open reduction and internal fixation (ORIF) of calcaneal fractures using an extended lateral approach results in soft tissue disruption theoretically subtalar joint stiffness. A minimally invasive sinus tarsi for posterior facet exposure percutaneous screw the body has been implemented. This report details stability resulting from this approach. Methods: Twenty-one consecutive patients (18 male, 3 female, 45 ± 16 years) with 22 underwent ORIF minimal through reduction, plate...

10.3113/fai.2012.0925 article EN Foot & Ankle International 2012-11-01

Background Platelet-rich plasma (PRP) injections are an experimental treatment for acute muscle injuries. We examined whether PRP would accelerate return to play after hamstring injury. The methods and the primary outcome measure were published in New England Journal of Medicine ( NEJM ) as ‘Platelet-rich injury’ (2014). This article shares information not available letter or online supplement, especially rationale behind study secondary measures including 1 year re-injury data. Methods...

10.1136/bjsports-2014-094250 article EN British Journal of Sports Medicine 2015-05-04
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