ABSTRACT

Trochlear nerve palsy has been based on head trauma, various inflammatory and infectious disorders, vascular diseases and neoplasms. In many cases cause of the nerve palsy unclear. We examined in relationship of the superior cerebellar artery (SCA) with the trochlear nerve in 35 cadaveric brains. The trochlear nerves were in contact with main trunk of the SCAs or its branches in all hemispheres. The anatomic relationships between the SCA and the trochlear nerve were observed in this study.