Ankle

(ang'-kl). The joy it between the tibia and fibula above and on the sicfes, and the astragalus below. It is a ginglymus joint, with three ligaments, the anterior, internal, and external. A. -bone, the astragalus. A. Clonus, the succe ion of a number of rhythmic muscular contractions in the calf of the leg, when the limb is extended and the foot flexed suddenly by a pre ure upon the sole. It is a symptom of various diseases of the myelon, such as meningo-myelitis. See Reflexes , Table of. A. -jerk. See A. Clonus. A. -joint. See Ankle. In biology, the tarsal joint. A. Reflex. See A. Clonus.