We present basic differences in the musculoskeletal ultrasound examinations between adults and children. Examiners who deal with adults on a daily basis have shared concerns about examining children. Such concerns may arise from the different approach to child ultrasounds, but they also come from differences in anatomical characteristics according to developmental age. We discuss the presence of growth plates, as well as non-mineralized parts of the bones. We also refer to the pathologies most often found in ultrasounds in early developmental stages. In the PubMed database, the set of keywords: "msk ultrasound in children", "pediatric msk sonoanatomy", "coxitis fugax", "pediatric Baker's cyst", "Baker's cyst ultrasonography", "bone septic necrosis in ultrasonography", "ultrasonography in juvenile idiopathic arthritis", and "ultrasonography in juvenile spondyloarthropathies", was used to identify a total of 1657 results, from which 54 was selected to be included in the article. We discuss the problem of osteochondritis dissecans, Osgood-Schlatter disease, examples of ligament injuries (especially in relation to the knee and ankle joints), exfoliation of growth cartilages, osteochondroma, exudates and inflammations affecting joints, and Baker's cysts. In this way, we have collected useful information about the most common diseases of the musculoskeletal system in children.
Keywords: Baker’s cyst; JIA; arthritis; coxitis; pediatric sonoanatomy; septic necrosis; spondyloarthropathies; ultrasonography; ultrasound.