Many people have this experience, when carrying heavy objects, is bending over force, listen to the “cluck” sound, feel the middle of the waist severe pain, but the skin of the waist is not a problem, not red and not swollen, which may be waist sprain, but we often encounter waist sprain is actually injured where the waist? A. What is an acute lumbar sprain? Acute lumbar sprain is an acute laceration of the lumbar muscles, fascia, ligaments and other soft tissues caused by sudden excessive strain due to external forces, often occurs when lifting heavy objects, lumbar muscles are strongly contracted. Most of them are caused by sudden indirect external force. Acute lumbar sprain can tear the attachment points of the lumbosacral muscles, periosteum, fascia and ligaments. In layman’s terms, it is muscle strain, if the lumbar sprain is more serious, there may also be other soft tissue inflammation around the muscle. Second, lumbar sprain to go to the hospital? 1, after the lumbar sprain is recommended that the best recuperation, serious lumbar sprain is best to bed rest; 2, it is recommended to wear lumbar support to protect the waist; 3, if the pain is obvious, you can follow medical advice oral some non-steroidal anti-inflammatory analgesic drugs for symptomatic treatment; 4, the acute period to avoid strenuous activities of the lumbar back, avoid bending and lifting heavy objects; 5, if necessary, you can do a physical therapy, but try to avoid the force of But try to avoid kneading the painful parts to prevent the symptoms from worsening. Generally speaking, after systematic conservative treatment, the symptoms of lumbar sprain will usually be gradually relieved within 2-3 weeks, if the symptoms still can not be improved, it is recommended that it is best to go to the hospital for a detailed examination. Third, how to avoid lumbar sprain? 1, try to avoid bending and lifting heavy objects; 2, avoid excessive strain on the waist and back, sitting for a long time; 3, pay attention to rest, avoid overexertion and prolonged bending labor; 4, sleep a little harder hard bed, correct poor posture; 5, you can do some simple lumbar massage to relieve muscle tension in the waist.