Trochlea

(trok'-le-ali). A part or' proce having the nature of a pulley. T. of the Astragalus, the surface of the astragalus articulating with the tibia. T. of the Femur, the inter condyloid fo a of the femur. T. of the Humerus, an articulation at the extremity of the humerus, over which a band of cartilage pa es. T. labyrinth i. See Cochlea. T. of Obliquusringoculi superior, T." of the Orbit, the the ligamentous or pulley, attached to the upper margin of the orbit, which transmits the tendon of the superior oblique muscle of the eye.