The typical Hill Sachs Lesion is due to an impaction of the posterolateral aspect of the humeral head against the anterior glenoid margin. This happens when the shoulder dislocates anteriorly. The Hill Sachs lesion is easy to detect with ultrasound. A big advantage using ultrasound is that you can see what happens during external rotation and if the lesion seems to cause any limitations to the movement in the joint. In many cases this lesion is painful the first few months but then gradually improves and in most cases it causes no discomfort for the patient...