The lumbar muscles are an important factor to ensure the stability of the lumbar spine, if there is a decline in strength or atrophy, then it will lead to frequent sprains. 2, there is also a small joint dysfunction of the lumbar spine, the small joints of the joint relationship changes, can not maintain the stability of the lumbar spine in the activity, there will be frequent lumbar 3, lumbar disc herniation leads to a wide and narrow gap, the stability of the lumbar spine will decline, there will also be the symptoms of the waist often sprained. So the waist is often sprained, the fundamental reason is the stability of the lumbar spine becomes worse, so usually must pay attention to maintenance. If this situation often occurs and there is no change, then you should go to a regular hospital in time to improve the relevant examination and then choose a reasonable treatment to avoid the symptoms of frequent sprains of the waist.