FOOT GRASP REFLEX

Click Here to See the Video

Test: Pressure on the sole of the foot elicits this reflex.  In video, you can see the examiner place his finger just under the toes of the infant and apply pressure.

Normal response: The infant's toes flex, or grasp.

Appears: 28 weeks, peaks at 32 weeks

Disappears: 2-3 months. The extrapyramindal motor system maturation may result in cessation of this reflex.

Abnormal persistence: >6 months

Abnormalities:
Asymmetrical PNS disease (root, plexus, or nerve problem)
Exaggerated, nonhabituating severe bilateral cerebral disease
Persistance >6mo  athetoid cerebral palsy

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