The spinal cord is part of the nervous system composed of bundles of nerves that arise from the base of the brain and go through the center of the spine. There are diseases in which the spinal cord is affected; one is spinal stenosis. This is a condition in which the spine spaces create pressure and narrow the spinal cord and nerve roots. This usually occurs when the space in the backbone is too narrow. This prompts the body to exert more pressure on the spinal cord and nerves as it goes down through the spine.
Sometimes, spinal stenosis has no symptoms. But when the case of this disease is severe, it shows symptoms such as numbness, weakness, cramping, and severe pain in the thigh and legs. The pain in the thigh commonly experienced in spine disease cases is called sciatica. Sciatica pertains to pain in the lower extremities, such as the buttock, thighs, legs, and feet. This occurs when the person is standing, walking, running, and jumping for a long period of time. The nerves suffering from an activity for a long time will become sore, constricted, and painful, leading to thigh pain.