Joost W. Colaris

ORCID: 0000-0002-1516-6463
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About
Contact & Profiles
Research Areas
  • Orthopedic Surgery and Rehabilitation
  • Elbow and Forearm Trauma Treatment
  • Bone fractures and treatments
  • Shoulder Injury and Treatment
  • Musculoskeletal synovial abnormalities and treatments
  • Medical Malpractice and Liability Issues
  • Osteoarthritis Treatment and Mechanisms
  • Medical Imaging and Analysis
  • Shoulder and Clavicle Injuries
  • Artificial Intelligence in Healthcare and Education
  • Tendon Structure and Treatment
  • Peripheral Nerve Disorders
  • Knee injuries and reconstruction techniques
  • Periodontal Regeneration and Treatments
  • Morphological variations and asymmetry
  • Trauma and Emergency Care Studies
  • Bone Tumor Diagnosis and Treatments
  • Fibromyalgia and Chronic Fatigue Syndrome Research
  • Surgical Sutures and Adhesives
  • Anatomy and Medical Technology
  • Patient Satisfaction in Healthcare
  • Trauma Management and Diagnosis
  • Congenital limb and hand anomalies
  • Genital Health and Disease
  • Clinical practice guidelines implementation

Erasmus MC
2014-2025

Erasmus MC - Sophia Children’s Hospital
2025

Erasmus University Rotterdam
2012-2024

Jeroen Bosch Ziekenhuis
2022

Radboud University Nijmegen
2022

University Medical Center
2022

Radboud University Medical Center
2022

University Hospital and Clinics
2022

Spaarne Ziekenhuis
2017

Spaarne Gasthuis
2017

Convolutional neural networks (CNNs) are increasingly being developed for automated fracture detection in orthopaedic trauma surgery. Studies to date, however, limited providing classification based on the entire image-and only produce heatmaps approximate localization instead of delineating exact morphology. Therefore, we aimed answer (1) what is performance a CNN that detects, classifies, localizes, and segments an ankle fracture, (2) would this be externally valid?The training set...

10.1007/s00068-022-02136-1 article EN cc-by European Journal of Trauma and Emergency Surgery 2022-11-14

Abstract The objective of the study was to obtain adjusted ultrasonographic reference values Achilles tendon thickness (maximum anterior–posterior distance) in adults without (previous) tendinopathy (AT) and compare these with AT patients. Six hundred participants were consecutively included, comprising 500 asymptomatic individuals 100 patients clinically diagnosed chronic AT. maximum assessed using Ultrasound Tissue Characterization. A multiple quantile regression model developed,...

10.1111/sms.14665 article EN cc-by-nc-nd Scandinavian Journal of Medicine and Science in Sports 2024-05-01

Abstract Purpose Distal radius fractures (DRFs) are often initially assessed by junior doctors under time constraints, with limited supervision, risking significant consequences if missed. Convolutional Neural Networks (CNNs) can aid in diagnosing fractures. This study aims to internally and externally validate an open source algorithm for the detection localization of DRFs. Methods Patients from a level 1 trauma center Adelaide, Australia that presented between 2016 2020 wrist were...

10.1007/s00068-024-02731-4 article EN cc-by European Journal of Trauma and Emergency Surgery 2025-01-17

In suspected scaphoid fractures with normal initial radiographs, the usual care is casting, but only 10% of patients have fractures. To reduce overtreatment, we evaluated whether bandaging, instead resulted in noninferior functional outcomes. We included adults and radiographs at emergency department our multicenter randomized controlled trial. Patients were to 3-day bandaging or 2-week casting. Questionnaires, physical examination, performed 2 weeks 1 year. Additional questionnaires sent...

10.1186/s10195-025-00822-5 article EN cc-by Journal of Orthopaedics and Traumatology 2025-03-05

Aims Diagnostic wrist arthroscopy is considered the gold standard for evaluating joint complaints. Although this tool often used to diagnose and stage scapholunate ligament (SLL) lesions, reports about possible findings their clinical relevance are scarce. Therefore, study describes patient characteristics, arthroscopic findings, treatment of patients who underwent diagnostic suspected SLL injury. Methods We conducted a retrospective cohort due suspicion lesion based on medical history,...

10.1302/2633-1462.63.bjo-2024-0237.r1 article EN cc-by-nc-nd Bone & Joint Open 2025-03-10

Forearm malunion affects upper limb function, impairing rotation, grip strength, and dexterity. Traditional osteotomies, based on two-dimensional imaging intraoperative adjustments, may fail to address the intricate three-dimensional aspects of forearm deformities. Advances in 3D technology, including imaging, virtual surgical planning 3D-printed patient-specific guides, have transformed corrective osteotomy by enhancing precision predictability. This paper discusses limitations traditional...

10.1177/17531934251327286 article EN other-oa Journal of Hand Surgery (European Volume) 2025-03-27

For distal forearm fractures in children, it has been shown that a below-elbow cast is an adequate treatment overcomes the discomfort of above-elbow and unnecessary immobilization elbow. reduced diaphyseal both-bone fractures, our previous randomized controlled trial (RCT)-which compared with early conversion to cast-revealed no differences risk redisplacement or functional outcomes at short-term follow-up. Although studies longer follow-up after children are scarce, they essential, as...

10.1097/corr.0000000000003100 article EN cc-by-nc-nd Clinical Orthopaedics and Related Research 2024-05-07

Background and purpose Activated platelets release a cocktail of growth factors, some which are thought to stimulate repair. We investigated whether the use autologous platelet gel (PG) in total knee arthroplasty (TKA) would improve wound healing function, reduce blood loss analgesics. Patients methods 102 patients undergoing TKA were randomly assigned PG group (n = 50) or control (C) 52). The primary analysis was based on 73 participants (PG: 32; C: 41) with comparison postoperative scores,...

10.3109/17453670903350081 article EN cc-by-nc Acta Orthopaedica 2009-10-01

The aim of this study was to determine the difference in functional outcomes after open reduction and internal fixation (ORIF) with without arthroscopic debridement adults displaced intra-articular distal radius fractures. In multicentre trial, 50 patients were randomized between ORIF or debridement. primary outcome measure Patient-Rated Wrist Evaluation (PRWE) score. Secondary measures Disabilities Arm, Shoulder, Hand (DASH) questionnaire, pain scores, range wrist motion, grip strength,...

10.1177/1753193419866128 article EN Journal of Hand Surgery (European Volume) 2019-11-05

Abstract Purpose Direct Discharge protocols (DD) can alleviate strain on healthcare systems by reducing routine outpatient follow-up. These include low-complex musculoskeletal injuries, such as isolated greenstick fractures or torus of the wrist in children. While there is consensus effectiveness DD, a lack injury-specific powered studies. This study compares treatment satisfaction between DD and traditional children with fracture wrist. Methods Children distal radius ulna were eligible for...

10.1007/s00068-023-02391-w article EN cc-by European Journal of Trauma and Emergency Surgery 2024-01-13

Abstract Introduction This study compares computed tomography (CT) with plain radiography in its ability to assess distal radius fracture (DRF) malalignment after closed reduction and cast immobilization. Methods Malalignment is defined as radiographic alignment beyond threshold values according the Dutch guideline encompassing angulation, inclination, positive ulnar variance intra-articular step-off or gap. After identifying 96 patients correct on initial post-reduction radiographs, we...

10.1007/s00068-024-02598-5 article EN cc-by European Journal of Trauma and Emergency Surgery 2024-07-10

Forearm fractures in children have a tendency to displace cast leading malunion with reduced functional and cosmetic results. In order identify risk factors for displacement, total of 247 conservatively treated the forearm 246 mean age 7.3 years (sd 3.2; 0.9 14.9) were included prospective multicentre study. Multivariate logistic regression analyses performed assess displacement or non-reduced cast. Displacement occurred 73 patients (29.6%), which 65 (89.0%) above-elbow casts. The time...

10.1302/0301-620x.95b5.31214 article EN The Bone & Joint Journal 2013-04-30
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