A normal plantar reflex response involves toe flexion, or even no movement. A positive test, also known as a Babinski sign, involves the hallux extending with all other toes flexing and / or spreading. A positive response is associated with an upper motor neurone lesion. Note that a Babinski response is normal in children under 2 years old. #Babinski #Sign #Reflex #Plantar #PhysicalExam #Diagnosis #Neurology
