Explore the intricacies of the trochlear nerve in this comprehensive 11-minute video. Delve into the nerve's anatomy, starting with its nucleus in the midbrain and following its unique course as it emerges from the posterior surface, crosses to the contralateral side, and enters the orbit. Learn about the superior oblique muscle's functions, including its role in eye movement and its pulley-like mechanism. Understand the clinical relevance of trochlear nerve damage, including symptoms like diplopia and compensatory head positioning. Gain insights into both congenital and acquired causes of trochlear nerve palsy. Benefit from clear explanations, detailed anatomical descriptions, and visual aids to enhance your understanding of this important cranial nerve.