Abnormal narrowing of the thoracic spinal canal, often with compression of the spinal cord.
Symptoms:
Pain in the mid back
Radiating pain in the upper or lower extremity
Numbness in the upper or lower extremity
Loss of motor control in the upper or lower extremity
Standing discomfort
Weakness
Bilateral symptoms
Discomfort above and below knee
"Shopping cart sign"- need to grab a shopping cart when going into a store in order to hold onto the cart and bend over relieving the pain in the legs.