A plain x-ray is important. An x-ray will identify calcific tendonitis, a very painful condition that can be treated simply, if identified early. An x-ray will also rule arthritis in or out as a cause of symptoms. An x-ray can often be a guide for identifying rotator cuff dysfunction if there is spur formation on the acromion and the greater tuberosity.
We have our own high quality x-ray system on-site.