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Babinski's signAn extension and fanning out of the toes when the sole of the foot is stroked firmly with a pointed object. This reaction, instead of the normal curling up of the toes, indicates damage to the motor system above the level of the spinal nerves and is common in STROKE. (Joseph François Babinski, 1857–1932, French neurologist).
responsereactive tissue response to stimulus
Babinski response see response, extensor plantar
Chaddock response provocation of extensor plantar response (in cases with upper motor neurone lesion) by stroking lateral side of lower leg from proximal to distal (compare with response, extensor plantar)
extensor plantar response; Babinski response; Babinski reflex slow, reflex dorsiflexion of hallux at first metatarsophalangeal joint, with fanning of lesser toes, and plantarflexion of fourth and fifth toes at 4/5 metatarsophalangeal joints when plantar skin is stimulated; normal in infants up to 7 months old; diagnostic of upper motor neurone lesion in older subjects (see sign, Babinski's; response, Chaddock; response, Gordon; response, Oppenheim)
Gordon response provocation of extensor plantar response, by squeezing posterior calf area; indicative of upper motor neurone lesion
Oppenheim response; Oppenheim reflex provocation of extensor plantar response, by stroking either side of tibial crest from proximal to distal; indicative of upper motor neurone lesion