Ankle clonus

A pathological reflex. During the examination, the patient was asked to lie supine, with the hip and knee slightly flexed, one holding the patient's calf and the other holding the distal end of the patient's foot to force the ankle dorsiflexion, then the ankle was in a rhythmic extension and flexion movement. Generally seen in cone bundle injury. Also found in central nervous system hyperexcitation and neurosis.

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