Ultrasound imaging and guidance in Bell's palsy

VIDEO S1: Ultrasound-guided perineural (corticosteroid and lidocaine) injection using the direct in-plane technique. Arrows indicate needle, arrowhead indicates facial nerve, and asterisk indicates injectate. Abbreviations: SCM; sternocleidomastoid muscle; T, temporal bone. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.