A close relation of mine had this problem about 5 or 6 years ago. It took considerable time for her to get a proper diagnosis but, eventually, she was offered surgery to try and free the spinal cord where it was adhering to some of her vertebrae.
She was warned that there were considerable risks involved, that a cure may not be effected and the surgery could possibly leave her unable to walk.
Nevertheless, she went ahead and had the op which has been successful in that she is no longer in constant excruciating pain and can walk normally, drive, swim and do most everyday things. The recovery/convalescence period was lengthy and quite complicated and she is still forbidden to lift and carry anything remotely heavy, do gymnastics or anything which might strain the lower back such as bungee jumping, zip wires etc.
However, despite the risk of the problem recurring and the relatively minor limitations to her lifestyle, my relative is pleased she had the surgery.
Medical knowledge and procedures advance rapidly so this experience may be well out of date now but, Bea65, I wish you well.