Thank you for writing to us.
I am sorry to learn about your brother.
The most common cause of having vertebrae out of place in any person would be a trauma or injury
to the vertebral
Other causes include vertebral osteomyelitis
and tuberculous disease of the spine also called as caries spine or Pott's disease.
Therefore, it is important to have a CSF examination done (fluid taken out from the spine for examination) to rule out these infections.
This, certainly, does seem to be a rare disease and I agree with you on that.
He will require longterm antibiotics if the diagnosis is an infection.
He will also possibly require surgery.
Outcomes with surgery are variable, meaning we cannot say for sure if he will be able to get full strength back or not or will be able to walk around normally or not.
Therefore at this point I would recommend that you should follow the recommendations of the doctor and hope for the best.
I wish you all the best for him.