How long you can have sex after lumbar spine surgery has a lot to do with the way the surgery is performed. If it is a minimally invasive surgery, you can have sex in about three months, and if it is an open surgery, it may take six months or even longer. 1. Minimally invasive surgery: If the lumbar spine surgery is a minimally invasive surgery for a herniated disc, this kind of surgery is less invasive and the recovery is faster, you can recover in about three months, but you should go to the hospital for a review before you have sex, and the doctor will decide whether you can have sex or not. 2. Open surgery: if the lumbar spine fracture has undergone open surgery, the operation may need to use internal fixation, this kind of surgery recovery time is longer, it may take half a year or even more time, you also need to go to the hospital for review, the doctor will decide whether it is possible to have sex. After recovery from lumbar spine surgery, when you first start to have sex, you should pay attention to avoid too strenuous movements, and you can eat more food high in calcium to promote recovery after surgery.