Hi, thank you for providing the brief history of you. As the surgery was performed for the correction of scoliosis at the age of 80 now due to the ageing of the spine and weakness of the muscular system there will be a compression on the nerve root in the spinal column. As the doctor already mentioned about the contra indication of the steroid dose, i will advice to undergo physical therapy as by which most of the muscular system can be activated an the current symptoms can be reduced. In my clinical practice, scoliosis surgery at the age of 80 is not a recommended one, along with physical therapy most of the symptoms can be controlled. Also, to the younger generation who have underwent the scoliosis surgery do get post surgery symptoms at early or later stages of life by having muscle weakness and nerve root entrapment. We advice the patient who have undergone or who have not undergone surgery only physical therapy as most of the symptoms can be controlled as well. I also wish your father a good health as ageing doesnt require any surgery but a proper care and approach as well. In my clinical practice, i see geriatrics with a lot of spinal problems, but surgery is not the choice to perform as due to the age factor chances of the future years to get trouble may become high due to degenerative changes in the body. Physical therapy is of choice as most symptoms can be controlled with physical therapy and medications. Regards Jay Indravadan Patel