No snapping phenomena or fluid selection is obvious during dynamic evaluation. Note that the subscapularis muscle belly - noticeable at the end of exterior rotation - should not be misinterpreted as an anechoic pathology. This sequence in AJPMR delivers concise but extensive educational movies on this subject and a brief http://www.canetads.com/view/item-3940818-Regenerative-Institute-of-Newport-Beach-Stem-Cell-Doctor-for-Pain-Management.html