title: Intra-articular osteoid osteoma mimicking juvenile arthritis.
abstract: In case of intra-articular osteoid osteoma, misdiagnosis as juvenile arthritis may occur, delaying adequate treatment. We report cases of intra-articular osteoid osteomas in children that were misdiagnosed and initially inappropriately treated with intra-articular corticoid injection. Diagnosis of osteoid osteoma was finally given by CT-scan and appropriate treatment by radiofrequency ablation or surgical ablation was performed. Clinicians and radiologists should be aware of the potentially confusing clinical and imaging findings associated with intra-articular osteoid osteoma.
authors.affiliation: Computer Assisted Robotic Surgery (CARS), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Tour Pasteur +4, Avenue Mounier 53, 1200 Brussels, Belgium ; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200 Brussels, Belgium.
authors.forename: Sidi Yaya
authors.initials: SY
authors.lastname: Traore
authors.affiliation: Service de Radiologie et d'Imagerie Médicale, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200 Brussels, Belgium.
authors.forename: Dana Ioana
authors.initials: DI
authors.lastname: Dumitriu
authors.affiliation: Computer Assisted Robotic Surgery (CARS), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Tour Pasteur +4, Avenue Mounier 53, 1200 Brussels, Belgium ; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200 Brussels, Belgium.
authors.forename: Pierre-Louis
authors.initials: PL
authors.lastname: Docquier