Ultrasound deltoids post trauma

These are axial images of both deltoids in a patient who sustained trauma to the area 10 years previously. The muscles have sustained significant injury and it is difficult to identify any significant muscle architecture in the images. Instead, bright calcific deposits are seen that cast shadows and contribute to the obscuration of the bone edge of the humerus (H) below. Muscle calcification can be seen as a residual of trauma or inflammatory myopathy.