THE SIGNIFICANCE of A CROSSED EXTENSOR HALLUCIS RESPONSE IN NEUROLOGICAL DISORDERS: A COMPARISON WITH the BABINSKI SIGN

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Abstract
The significance of a crossed extensor hallucis response on active flexion of the hip was analyzed in various neurological disorders. This sign, not formerly described, is apparently a pathological reflex or synkinesia. In the cooperative patient the crossed extensor response was a more sensitive indicator of a minor disturbance within the corticospinal motor pathways than the Babinski sign. With lesions above the foramen magnum a crossed extensor hallucis response was observed more frequently than the Babinski sign.