In the past three months, Wang always felt pain in his lower back, walking not far from the left lower limb numbness, heavy, had to sit down to rest, rest for a while and can walk, but not far and can not walk, this situation is getting heavier and heavier, each walking distance is getting shorter and shorter, but no feeling when riding a bike, Wang is very strange, what is going on here? Wang’s symptoms are typical, he suffers from lumbar spinal stenosis, his symptoms in the medical term “intermittent broken line”. This symptom is due to degeneration of the lumbar intervertebral discs and instability between the vertebrae, resulting in degeneration of the lumbar spine, deformation or narrowing of the lumbar spinal canal, nerve root channels and intervertebral foraminal tunnels, causing compression of the cauda equina or nerve roots, which in turn produces the corresponding clinical symptoms are called lumbar spinal stenosis, also known as lumbar spinal stenosis syndrome. This disease is most common in middle-aged and elderly people, about 80% of whom are between 50 and 70 years old, more often in men than in women, and more often in manual laborers. The main symptoms of this disease are: patients present with chronic low back pain, leg pain, and intermittent ruptures. Low back pain only manifests as lower back and sacrococcygeal pain, mostly occurs when standing or walking for too long, if rest, squatting or cycling pain can mostly disappear on its own. Patients have obvious soreness and swelling in the lumbar region without fixed pressure points. The patient is often in a forced flexion position because of the nerve root compression when posterior extension, and the leg pain often involves both sides, and may occur unilaterally or alternately. Intermittent walking is the main feature of the disease, after walking and exercise, unilateral or two lower skin numbness, heaviness, pain, weakness, the more you walk, the more serious the symptoms, often forced to stop and rest, squatting immediately after the symptoms, if you continue to walk, the same symptoms, serious conditions can cause urinary urgency or urinary difficulties, perineal numbness, paralysis, saddle area numbness, limb sensory loss and urinary and fecal disorders, all these are These are all caused by the compression of the cauda equina nerve or nerve root by lumbar spinal stenosis.