Understanding fat-pad signs is crucial in trauma imaging! These images clearly demonstrate how joint effusion alters the position and visibility of the anterior and posterior fat pads on a lateral elbow X-ray. 👉 Normal Elbow: • Anterior fat pad lies parallel to the distal humerus • Posterior fat pad is not visualized 👉 Elbow Effusion: • Anterior fat pad is displaced anteriorly → “Sail Sign” ⛵ • Posterior fat pad becomes visible → ALWAYS abnormal --- 🔴 IMPORTANT NOTE FOR RADIOLOGY PROFESSIONAL