The bed rest time after lumbar spine fusion surgery is mainly related to the degree of nerve damage, surgical methods and other factors. Generally speaking, patients after minimally invasive surgery can get down to the ground in less than 1 week, while patients after open surgery need at least 2 months. 1. Minimally invasive surgery: Lumbar fusion surgery is to fuse two or more vertebrae to form a “new” vertebra. If the patient’s nerve damage is mild, and there are no symptoms of nerve compression such as weakness and numbness in both lower limbs, the patient can choose minimally invasive surgery. Patients who have lumbar posterior interbody fusion via intervertebral foraminal approach can go down to the ground within 1 week after the surgery, but they should wear a lumbar cuff or support to protect the lumbar vertebrae when they go down to the ground. 2. Open surgery: If the patient’s preoperative nerve injury symptoms are more serious, and before the operation, there are already two lower limbs muscle weakness, dysfunction, etc., do not have minimally invasive surgical conditions, can only carry out the traditional open lumbar posterior fusion surgery, it usually takes about 2 months to go down to the ground under the protection of the support. Some of the severe patients need even longer time. The duration of bed rest after lumbar spine fusion surgery is also related to whether the patient has a combination of chronic diseases such as diabetes, coronary heart disease, etc., as well as his or her own nutritional status and other factors.