Lumbar muscle strain is damage to the muscles of the lower back due to overexertion. Those who cause lumbar muscle overwork damage are usually older people who have been weight-bearing workers in the lumbar region for a long time and whose tissues have degenerated. In recent years, more and more young people are suffering from lumbar muscle strain due to workload or intense study. Acute injury or chronic strain damage to the lumbosacral region causes ischemia, swelling, and necrosis at the attachment point of the sacral spine muscle on the vertebral plate and at the attachment point of the thoracolumbar fascia at the tip of the transverse process, causing local pain, which in turn leads to spasm of the sacral spine muscle and the lumbaris major muscle, and so on in a vicious cycle, the condition worsens, and the following kinds of pathological changes will occur: 1. Resulting in lumbar soreness in the distribution area of the medial branch of the posterior branch of the spinal nerve; 2. As a result of wrapping the sacral spine muscle and the thoracolumbar fascia that encases the sacrospinous muscle and lumbaris major muscle, resulting in radiating pain in the distribution area of the lateral branch of the posterior spinal nerve, in the hip-sacral region, and in the corresponding areas of L3, L4, L5, and S1 lesions, in order from the outside to the inside; 3. Due to the lesion of the sacrospinous muscle and lumbaris major muscle, the posterior branch of the spinal nerve is involved, which reflexively causes radiating pain symptoms in the lower limbs of the corresponding anterior branch of the spinal nerve; 4. Due to the long-term spasm of the sacrospinous muscle, the corresponding 4, due to the long-term spasm of the sacrospinous muscle, the pressure of the corresponding intervertebral space increases, so that the nucleus pulposus is subjected to long-term overload, and then outwardly squeeze the fibrous ring, so that it shows the bulging shape seen on CT, at this time most patients do not appear nerve root symptoms, while some patients, together with other causes, such as the relative stenosis of the spinal canal and other synergistic effects, resulting in radicular symptoms; 5, the disease continues to develop, when the fibrous ring can not withstand long-term overload, the inner fibrous ring will appear partly When the disease continues to develop, when the annulus fibrosus cannot withstand the long-term overload, the inner annulus fibrosus will be partially fractured, at which time the CT will show us the symptoms of disc herniation, and some patients will have radicular symptoms; 6. The emergence of the nucleus pulposus causes the vertebral space to become smaller rapidly, which makes the sacrospinous muscle get relatively relaxed and the lumbar symptoms are then relieved or disappear. The first thing to determine whether it is a lumbar strain is: 1. soreness or swelling of the lumbar region, partly stabbing or burning pain; 2. aggravated by exertion and alleviated by rest; alleviated by appropriate activities and frequent changes in position and aggravated by excessive activities; 3. unable to insist on bending over. The pain is often relieved by stretching the waist or hitting the waist with the fist; 4. There are pressure points in the waist, mostly at the sacrospinous muscle, the posterior iliac spine, the sacrospinous muscle stop after the sacrum or the transverse process of the lumbar vertebrae; 5. There are no abnormalities in the appearance and activities of the waist, and there is no obvious spasm of the lumbar muscles. Lumbar muscle strain is important for prevention. Avoid some actions that can easily cause “flashing back”, such as bending over to hold heavy objects, repeatedly bending over, etc. Once the lumbar sprain, rest must be taken to prevent the spine from constantly moving to interfere with the repair of damaged soft tissues. In daily life and work must maintain good posture, long-term sitting occupations must maintain the correct sitting posture. People who need to bend over for a long time because of their work should keep their lower back flat so that the body’s center of gravity is located at the hip and foot, which is less likely to cause lumbar muscle fatigue. Maintain good posture in order to prevent lumbar muscle strain. Why should lumbar muscle strain be treated? Lumbar muscle strain takes comprehensive treatment measures to relieve pain, improve the condition and prevent the lumbar muscles from changing to fibrosis. It can become a chronic disease. Treatment measures include rest, keeping the lumbar region braked, taking painkillers, using prednisolone acetate or hydrocortisone acetate for those with localized pain spots, and procaine for pain spot injection, once every 5-7 days, 3-4 times as a course of treatment. For those with widespread back pain without obvious pain points, massage, physiotherapy or acupuncture are feasible; strengthen physical exercise to enhance the strength of the back.