plantar reflex


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plantar reflex

[′plan·tər ′rē‚fleks]
(physiology)
Flexion of the toes in response to stroking of the outer surface of the sole, from heel to little toe.
References in periodicals archive ?
On 27 July 1898, in the Semaine Medicale, Joseph Babinski discussed the plantar reflex: both in the case of central nervous system anomalies and in the healthy newborn infant during his first year, following a moving sensory stimulus, applied to the lateral plantar surface of the foot, there would be a slow extension of the big toe.
The fanning of the toes phenomenon accomplished the distinction Charcot had been unable to identify--the presence of an abnormal plantar reflex (a Babinski sign) absolutely excluded hysteria.
Initial neurological evaluation disclosed marked leg (1/5 grade) and mild arm weakness (4/5 grade), hypoactive deep tendon reflexes, normal plantar reflexes, decreased pinprick, and vibration sensation in all limbs, without a well-defined sensory level, as well as bilateral facial weakness, dysphonia, dysphagia, and restricted eye movements in all directions.
Hyperactive deep tendon reflexes may be observed, but extensor plantar reflexes are rare (l,2,3,4).
Deep tendon reflexes were absent, and plantar reflexes were not elicitable.
She was areflexic and had down going plantar reflexes but sensation in all limbs was intact.Laboratory examination showed bicytopaenia (haemoglobin of 9.5 g/dL and platelet count of 50 x 109 cells/L).