After a fall in the elderly waist, it usually takes 4-8 weeks to recover, the details are as follows: First, if an injury occurs in the elderly for lumbar soft tissue contusions, usually need bed rest for about four weeks, pain symptoms will disappear completely, can restore the range of motion of the lumbar spine, and can live normally. Second, if the lumbar spine is fractured after the injury, such as lumbar transverse process fracture and lumbar vertebral compression fracture, it usually requires 1-2 months of continuous bed rest to make the pain symptoms completely relieved, and about two months also need to wear protective gear to leave the bed activities. In order to avoid fracture displacement, patients should strictly control the time of leaving bed, generally not more than two hours per day, and gradually increase the time of weight-bearing activities to return to the normal level of life.