In the middle and late stage of strong spine, patients can't lean back because of excessive bending and fibrosis, which has an impact on their lives. Because the disease may involve the heart, kidney and eyes, it needs comprehensive treatment. Treatment methods include physical therapy, physical therapy, drug therapy and surgical treatment.
I don't know if this operation is for ankylosing spondylitis. Anyway, patients with strong spine are contraindications for spinal anesthesia, so general anesthesia is necessary. General anesthesia does not need to be administered through lumbar puncture. General anesthesia means that anesthetics enter the body through inhalation, intravenous or intramuscular injection.
I think professional things should be left to professionals, trust surgeons and anesthesiologists.
I wish you a speedy recovery.