Figure 1

Three axes and line of vision (A) before and (B) after HA-ECTS. Abbreviations: O, oral axis; P, pharyngeal axis; L, laryngeal axis; LV, line of vision.

Three axes and line of vision (A) before and (B) after HA-ECTS. Abbreviations: O, oral axis; P, pharyngeal axis; L, laryngeal axis; LV, line of vision.