Plantar reflex
Plantar reflex is a neurological reflex that occurs in response to stimulation of the sole of the foot. It is used in medicine to assess the integrity of the spinal cord and peripheral nerves of the lower limb.
Mechanism[edit | edit source]
The plantar reflex is elicited by stroking the lateral aspect of the sole of the foot with a blunt instrument. The normal response is a downward flexion of the toes. This is known as the flexor response.
In certain conditions, an abnormal response known as the Babinski sign can be observed. This is characterized by an upward extension of the big toe, often accompanied by fanning of the other toes. The Babinski sign is a sign of damage to the pyramidal tract, a group of nerve fibers that travel from the brain to the spinal cord.
Clinical significance[edit | edit source]
The plantar reflex is used in clinical practice to assess the integrity of the spinal cord and peripheral nerves. It is particularly useful in identifying damage to the pyramidal tract.
The presence of the Babinski sign can indicate a variety of neurological conditions, including stroke, multiple sclerosis, and spinal cord injury. It can also be seen in individuals with brain tumors or meningitis.
See also[edit | edit source]
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