Mr. Li of Haigang District is recently very dissatisfied with his body, want to practice a good body before the New Year to participate in classmates, so exercise at home. But because of not doing enough preparatory activities, just when the movement began to accidentally flash to the waist, immobilized, waist persistent severe pain, resulting in the inability to walk and turn over, yesterday emergency sent to our hospital for treatment. “Flash back” in the clinical called acute lumbar sprain. General people often bend over to lift heavy objects, the sacral area of the muscles, ligaments, fascia and other soft tissues are suddenly strained and more than its elastic limit caused by acute injury. Acute lumbar sprain can immediately appear severe pain, and even a sense of lumbar rupture, at this time, the waist dare not move, walking difficulties, serious cases can not even turn over when lying in bed. The pain in the lumbar region is continuous and can be aggravated by coughing, sneezing and abdominal exertion. We hope that you should avoid these kinds of movements. Acute lumbar sprains should be prevented in daily life. The first aid focus is to maintain a comfortable posture and rest and apply cold compresses. How to prevent the occurrence of acute lumbar sprain? Prevention of acute lumbar sprain occurs first of all to strengthen health care awareness and health care knowledge. Before we usually do strenuous activities to do a full preparation activities, long-term bending work, sitting, squatting or sitting too short chair do not suddenly stand up or straight waist. In lifting heavy objects to take the correct posture, first the lumbar muscles tense up, take a bent knee squatting posture, do not overbend, lifting objects must be closer to the center of gravity of the body. It is also important to keep warm on cold days, because cold stimulation can cause small blood vessels in the muscles to contract, causing muscle spasm, and can also cause sterile inflammation of the muscles, causing or aggravating the occurrence of low back pain. Try to sleep on a harder bed, because a too soft bed can change the physiological flexion of the lumbar spine, which increases the physiological flexion of the lumbar spine and increases the burden on the lumbar muscles. There are many ways to train the lumbar muscles such as supine work, gymnastics, and self-rubbing of the lumbar muscles can prevent lumbar sprains. If a lumbar sprain occurs, it can be handled as follows: (1) stop work, labor, absolute bed rest. Should be supine on a hard bed, a thick bed, a soft pillow under the waist, can reduce pain and relieve muscle spasm. (2) the day of the sprain do not hot compress and massage, so as to avoid local vasodilatation, oozing blood and aggravate edema. 24 hours later, the local available hot compress, massage, pulling fire trough treatment, or salt fried hot cloth wrapped around the affected area, or fingertips, palm edge or half-clenched fist hand evenly knock the injured muscles of the waist and back; also available safflower oil, rice wine, etc. coated, rubbing the affected area, to promote local blood circulation, and harmonize the qi and blood . (3) If the above methods still do not work, please go to a professional pain treatment department in time.