Fourth Nerve Palsies | Animation | Explained Conceptually скачать в хорошем качестве

Fourth Nerve Palsies | Animation | Explained Conceptually

An animated analogy to explain why vertical and torsional diplopia occurs in unilateral and bilateral 4th (trochlear) nerve palsies, and how to diagnose it at the bedside using Bielschowsky's head tilt test. Link to extraocular muscle actions video mentioned:    • Extraocular Muscle Actions | Animation | E...   Timecodes 0:00 - Intro 0:25 - Analogy breakdown 0:46 - Resting extraocular muscle actions 1:03 - Torsional eye movements 1:46 - Patient's perspective 2:21 - Normal rightward head tilt 2:38 - Eye intorters (Superior oblique and rectus) 3:09 - Eye extorters (Inferior oblique and rectus) 3:54 - Normal leftward head tilt 4:13 - Ocular counter-rolling 4:40 - Trochlear nerve 4:55 - Superior oblique actions 5:02 - Superior oblique palsy 6:06 - Vertical + Torsional diplopia 6:31 - Right 4th nerve palsy with rightward head tilt 7:08 - Positive Bielschowsky head tilt test 7:22 - Right 4th nerve palsy with leftward head tilt 8:13 - Habitual head tilting 8:45 - Right 4th nerve palsy with a leftward gaze 9:32 - Arrow sign 10:01 - Bilateral 4th nerve palsy 11:09 - Bilateral 4th nerve palsy with rightward head tilt 11:19 - Bilateral 4th nerve palsy with leftward head tilt 11:27 - Positive Double Bielschowsky head tilt test 11:50 - Summary #EndNeurophobia