The 57-year-old Wang has always been very healthy, not some of his peers suffer from such as hypertension, diabetes, heart disease or coughing and asthma and other rich diseases of the elderly, but also to adhere to the high-intensity work, its good physical fitness among his peers belong to the best, is very enviable. But in the past two years, Wang gradually found that the left leg after long-distance walking occasionally numbness, after proper rest and no symptoms. From last year, the symptoms were found to increase, as long as the flat ground after walking about 500 meters will begin to appear from the lumbosacral, through both sides of the rear of the buttocks, the back of the thigh to the back of the calf lateral and the back of the foot and plantar lateral radiation of pain and numbness symptoms, the left side of the symptoms are heavy, the right side of the symptoms to be slightly lighter, and with the extension of the walking distance, the symptoms gradually aggravated, and so on to about 1000 meters, the two legs of the old king Pain and numbness and can not insist on walking, find a place to sit down or squat to rest for a minute or two can completely relieve the symptoms, and then can continue to walk, and then walk about 700 meters after the re-emergence of the above symptoms and had to sit or squat again to rest, such a long distance walking Wang had to walk while resting. Wang took the bus to work, first came out of his home, walked about 1500 meters to the bus station, and took about 40 minutes to reach his unit after getting on the bus. So Wang had to sit or squat a few times on the way to the bus stop because of leg pain, and when he got on the bus, if there was no seat, he had to stand all the way to the unit, which was no problem before. But since two years ago began to leg pain and leg numbness, Wang found in the bus for 20 minutes to half an hour on the continuous standing and walking for a long time, the same numbness and pain symptoms and unbearable, if then Wang found a seat, a seat less than two minutes after the symptoms immediately disappear. Old Wang is also a good person who is willing to help others, although they have just found a seat, but as long as he saw the old man on board, he took the initiative to give up his seat. This time, Wang stood for another 10 minutes to 15 minutes or so on the symptoms of numbness and pain in the legs again. How to do it, Wang found that the waist, lying on the side of someone’s seat for a minute or two can also immediately relieve the symptoms. So, when Wang stood on the bus, always see him standing for a while to bend a waist, or lying on the side of someone else’s seat for a while, even the conductor felt, what is wrong with this person? Take the bus to and from work so painful, Wang switched to cycling, strange, continuous cycling for more than an hour to the unit, no leg pain leg numbness symptoms, colleagues heard that Wang cycling to and from work, all praise Wang good health, Wang also wondered, my body is good, a little leg problems are no big deal, and did not take it to heart. Old Wang’s family lives five floors, no elevator, due to good health, when the old Wang climb upstairs in one breath, effortless. But downstairs, just two floors, there is a leg pain and leg numbness symptoms, how to do? Only in the stairs to sit and rest for a while and then continue to go downstairs. In the last two months, Wang’s symptoms have become more and more serious, walking about 100 meters, or standing for about 5 minutes on the serious leg pain and leg numbness symptoms. Of course, by this time, Wang could not go to the mall with his partner, nor could he go for a walk with his partner. Thus, Old Wang had to come to the hospital to see a doctor. Strangely enough, cycling for more than an hour or actually no symptoms, Old Wang still cycled to the hospital to see the doctor. After a detailed physical examination, and then through the lumbar spine hyperextension and hyperflexion flat film, MRI and CT examination, combined with the symptoms of Wang, the doctor told Wang that he had lumbar spinal stenosis, but also said that Wang’s symptoms are very typical, from a variety of films can be seen between the fourth and fifth lumbar vertebrae and the fifth lumbar vertebrae and the first sacral vertebrae of Wang there is instability, that is to say, the two lumbar vertebrae segments too much activity, and at the same time It was also found that the two lumbar segments had obvious disc herniation, hypertrophy of the ligamentum flavum between the vertebral plates, extensive intervertebral joint hyperplasia, and bone spur formation, resulting in bilateral narrowing of the nerve root canals of the lumbar 5 and sacral 1 pairs, and compression of the two pairs of nerve roots. The typical symptoms of lumbar spinal stenosis are like those of the old king, where the patient has symptoms after prolonged standing or longer distances, and when sitting or squatting or lying in bed can be without any symptoms or make them relieved, and in some patients even a little bending can relieve the symptoms. Throughout the day, patients may have mild symptoms in the morning, gradually worsen in the afternoon or evening after a day of exertion, and have some relief after a nap. Symptoms of lumbar spinal stenosis can persist for many years, slowly worsening over time, with a gradual reduction in standing time or walking distance prior to the onset of these symptoms. In severe cases, the patient may be able to stand for less than five minutes or walk for ten or so steps before the symptoms appear and he or she cannot continue walking. Thus, we see that patients with lumbar spinal stenosis cannot stand for long periods of time to work. Teachers with lumbar spinal stenosis cannot stand to finish a class, and leaders with lumbar spinal stenosis cannot stand for long periods of time to lecture or give reports to their staff, and some even lose the opportunity for promotion. Patients with lumbar spinal stenosis cannot go to shopping malls or take long walks for a long time. Although patients with lumbar spinal stenosis cannot stand or walk for long periods of time due to the stenosis, they often do not experience symptoms when bending over. Since cycling is bending, a typical patient cannot stand and walk for a long time, but can ride a bicycle without symptoms, so many middle-aged and elderly patients with lumbar spinal stenosis with mild symptoms ride a bicycle or a small tricycle when they go out, and have no choice but to “walk with a car”; in addition, since going up a hill or going upstairs is bending, while going down a hill or going downstairs is holding the waist, therefore, patients with lumbar spinal stenosis Therefore, patients with lumbar spinal stenosis can go up the hill or up the stairs very easily and freely, but it is very difficult to go down the hill or down the stairs; elderly people like children, and when they hold children, they hold their waist up, which means that the lumbar vertebrae are in a posterior extension, while when they carry children, their waist is in a forward bending state. Likewise, middle-aged and elderly people with lumbar spinal stenosis can easily induce the above-mentioned symptoms when carrying a large pile of things in their arms while carrying them on their shoulders, and can walk long distances with great ease. Lumbar spinal stenosis in the general sense refers to the narrowing of the lumbar nerve root canal, mostly in the lower lumbar spine, that is, the lumbar 3 to sacral 1 segment. At present, it is believed that the main cause is caused by degenerative lumbar spine slippage and degenerative lumbar instability due to lumbar degeneration, mostly seen in middle-aged and elderly people; lumbar spine slippage can also occur in the lumbar isthmus discontinuity, mostly seen in young and old people, but often it is also in middle-aged and old age that further narrowing of the lumbar nerve root spinal canal is caused due to degeneration of the lumbar spine, thus causing symptoms of corresponding nerve damage. After lumbar nerve root spinal stenosis, it can be due to both direct compression of the lumbar nerve root spine; or it can be due to local venous return obstruction after lumbar nerve root spinal stenosis, which causes ischemia of the corresponding lumbar nerve root. The combined effect of these two mechanisms can result in symptoms of corresponding lumbar nerve root dysfunction, which is referred to as lumbar spinal stenosis. Most of the pathogenesis of lumbar spinal stenosis is based on degeneration and aging of the lumbar spine, and is therefore mostly seen in middle-aged and elderly people. Since the lumbar spine is easily compressed or ischemic in the upright or posterior extension state, the lumbar nerve roots are less likely to be compressed or ischemic in the flexion state. Therefore, patients with lumbar spinal stenosis are prone to symptoms when they stand or walk for a long time or maintain a posterior extension position of the lumbar region for a long time, while they are less likely to have symptoms when the lumbar region is flexed, or can relieve symptoms when the lumbar region is flexed after symptoms appear. Thus, the symptoms of lumbar spinal stenosis are characteristic and dramatic. Although the condition is called “lumbar spinal stenosis,” most patients do not have back pain. Other conditions that can cause “intermittent claudication” include “intermittent claudication of spinal origin” due to spinal cervical spondylosis or thoracic spinal stenosis, and “intermittent claudication of vascular origin” due to thrombotic vasculitis of the lower extremities, the clinical symptoms of which are The clinical symptoms are different from those of “neurogenic intermittent claudication” caused by lumbar spinal stenosis.