If the patient’s back is often sprained, it may be related to the following reasons: 1. There may be a problem with the patient’s force. If the patient bends over first and then lifts heavy objects, it will often cause sprain of the back. The correct posture should be to squat first, keep the waist straight, and then lift heavy objects or shoulder heavy objects. 2. There may be atrophy of the lumbar muscles. It is often seen in patients who often lie in bed without exercise, or have frequent sitting and standing, the lumbar muscles do not reach enough exercise strength, and then produce disuse atrophy. If the patient is doing some strenuous activities involving the lumbar area, it is very easy to cause a sprain of the lumbar area. 3, there may be a strain of the lumbar muscles. This is often seen in patients who work long hours sitting and standing, which over time can lead to strain on the muscles on both sides of the lumbar spine. In addition to pain in the lumbar region, it is also accompanied by weakness of the lumbar muscles. If such patients do some strenuous activities involving the lumbar region, it is also easy to cause repeated lumbar sprains.4. Repeated sprains are also often seen in patients with lumbar spine related diseases, such as a lumbar disc herniation.