ممرض يفحص منعكس بابنسكي عند بالغ، فارتفع الإبهام للأعلى وانفرجت الأصابع. ماذا تعني النتيجة؟

Testing the plantar reflex in an adult, the nurse sees the big toe rise and the toes fan. What does this mean?

1. Abnormal, indicating upper motor neuron injury
2. A sign of peripheral nerve weakness in the leg only
3. A normal finding in all healthy adults
4. A sign of low blood calcium

Answer: A) Abnormal, indicating upper motor neuron injury. An upgoing big toe (positive Babinski) in an adult indicates corticospinal tract injury in the brain or cord. In infants up to about one year it is normal.