When your intervertebral disk starts pressuring the nerve, following a protrusion, it can cause strong pains in the leg area. This condition is also known as sciatica.
Sciatica is name given to the pains in the sciatic nerve that span from the lower back, through the hips and buttocks, and all the way down to every leg.
Any type of damage to the places where the nerve goes through can result in nerve pinching and this type of pain.
Lumbar pains spread through the length of your upper leg, calves, knees, and/or the feet. They are strong and continuous aches that very often cause a tingling sensation and leg numbness that can lead to walking difficulties.