The significance of positive pyramidal tract signs

Babinski sign refers to the abnormal reflex that occurs when the brain loses its inhibitory effect on the brainstem and spinal cord when the pyramidal tract is damaged; it is used in clinical neurological examination and is a pathological reflex of the pyramidal tract. You may not understand such a professional medical explanation, but it doesn’t matter, you will understand it after reading it more. Let’s take a look at the significance of a positive pyramidal tract sign.

Babinski sign

① Correct inspection method: Use a bamboo stick to pass along the outer edge of the patient's sole from back to front to the heel of the little toe and turn inward.

side. ② A positive reaction is dorsiflexion of the big toe and the remaining toes spreading out in a fan shape.

(2) Oppenheim's sign

① Correct examination method: The examiner uses the thumb and index finger to apply force from top to bottom along the front edge of the examinee's tibia.

Sliding pressure. ② A positive reaction is dorsiflexion of the big toe and the remaining toes spreading out in a fan shape.

(3) Gordon's sign

① Correct examination method: During the examination, use your hands to pinch the middle part of the subject's gastrocnemius muscle with a certain force. ② A positive reaction is dorsiflexion of the big toe and the remaining toes spreading out in a fan shape.

①What should be considered if the pyramidal tract sign is positive on one side? What should be considered when bilateral pyramidal tract signs are positive? Answer: If one side is positive, it may indicate damage to the pyramidal tract or a higher central lesion. Bilateral positivity is caused by lesions in the lower motor nerve conduction pathway, which results in the loss of inhibition from higher centers on both sides. Note that children under 1 year old may have positive pyramidal tract signs.

②Can a normal person have Babinski sign (+)? Answer: It may occur in children before 1 and a half years old, and the rest are abnormal. ③When there is pyramidal tract sign (+) in one limb, what other physical examinations are needed?

Answer: Check the contralateral pyramidal tract signs, as well as other physical signs such as motor and sensory examinations to qualitatively locate and evaluate the lesion location.

Second meaning

It may take several days or even longer for a stroke patient to develop tendon hyperreflexia after a stroke, but Babinski sign can appear immediately after the onset of the disease. When the muscle tone of the hemiplegic limbs increases, tendon hyperreflexia and Babinski sign are easily seen. However, in most cases of hemiplegia, low muscle tone and non-hyperactive tendon reflexes, Babinski sign can be elicited, that is, hyperreflexia of tendons and positive Babinski sign are not necessarily completely parallel. In addition, the occurrence of Babinski sign is by no means limited to pathological anatomical changes of the pyramidal tract. Pyramidal tract signs can sometimes be seen in cases of pyramidal tract dysfunction.

After reading the above content, you will have some understanding of the various reactions when the pyramidal tract sign is positive. However, this phenomenon of positive pyramidal tract sign only occurs in children aged one and a half years old. If it occurs in other people, it is an abnormal reaction. You should pay more attention to the symptoms that appear in these children. It will also be helpful if it occurs in your baby in the future. Care about your baby's growth and development.