**3.3 Claudication**

With progression of the condition, pain generally involves the buttock as well as the leg, causing neurogenic claudication symptoms which are worse with standing and walking and are relieved with sitting or stooping. The condition is a result of lumbar spinal stenosis brought about by impingement of nerves emerged from the spinal cord. Studies have shown that the symptoms vary over time in different patients. Symptoms tended to improve in 15% of the patients. In 40% of the patients, the condition tended to deteriorate during the initial 2–3 years of follow-up, and in 45% of the patients, the condition remained stable [42, 43].
