“…Finally, a study by Thom et al 13 showed that POCUS of the hip joint performed by emergency physicians led to expedited diagnosis (68 vs 208 minutes) and arthrocentesis (211 vs 602 minutes) in septic arthritis cases compared with radiology-performed studies. Previous work has described successful POCUS-guided diagnosis and arthrocentesis of shoulder, knee, and hip effusions in pediatric patients by emergency physicians, but to our knowledge, POCUS use for drainage of a pediatric ankle effusion by emergency physicians has not been described 10,12,13 …”