This article is professionally consulted by MD, Specialist level I. Nguyen Thanh Hai - Radiologist, Department of Diagnostic Imaging and Nuclear Medicine, Vinmec Times City International General Hospital. Musculoskeletal disorders involving the shoulder joint have become increasingly common. Previously, contrast-enhanced shoulder joint X-rays were the preferred diagnostic tool. However, nowadays, non-invasive imaging techniques have advanced, including shoulder joint ultrasound. This technique not only supports examination and diagnosis but is also used by physicians as part of the treatment for some conditions.