Ângelo, DavidAraújo, R. A. D.Sanz, D.2021-04-122021-04-122021International Journal of Oral and Maxillofacial Surgery, 20210901-5027http://hdl.handle.net/10451/47347© 2021 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.Temporomandibular joint (TMJ) arthroscopy is a minimally invasive surgical procedure proposed for diverse TMJ intra-articular disorders. A prospective study was designed with the aim of investigating intraoperative and postoperative surgical complications for single and double-portal TMJ arthroscopy. All interventions were performed by one surgeon with the same surgical protocol. A total of 55 patients were enrolled, resulting in 82 TMJ arthroscopies (28 unilateral and 27 bilateral). A total of 39 single portal (47.57%) and 43 double-portal (52.43%) arthroscopies were performed. No severe and irreversible complications were observed. Most complications were resolved after 4 weeks. Double-portal was associated with more complications (n=23) compared with single-portal TMJ arthroscopy (n=14), with a statistically significant difference found between single and double-portal TMJ arthroscopy in two intraoperative complications: intra-articular bleeding (P=0.044) and oedema of the preauricular area (P=0.042). This study confirms the safety of TMJ arthroscopy for single and double-portal procedures, with the authors suggesting a multicentre study, in an effort to minimize any possible bias.engTMJTemporomandibular jointArthroscopyMinimally invasive surgical proceduresjournal article10.1016/j.ijom.2020.07.0201399-0020