Orbit and Cavernous Sinus - LO 6
The distal tendon of the superior oblique m. runs through the trochlea, a fibrocartilaginous loop (pulley) that attaches to the trochlear fossa of the frontal bone, before inserting on the posterosuperior sclera of the eye.
The common anular tendon (common tendinous ring) is the origin site for the rectus muscles. The ring encircles the optic n. (CN II), oculomotor n. (CN III), and abducens n. (CN VI).