See below. The use of spinal manipulation under anesthesia is done by chiropractors. Once you are completely relaxed under anesthesia the chiropracter will flex and press on your spine. Iit has not been verified as effective by independent studies. I would check the MRI or ct used to make this decision with an md before proceeding.
Unclear. What are you asking? Your question was regarding "pinal manipulation" do you mean spinal manipulation (by a chiropractor) under anesthesia? If so...Look here: http://www.Bartosekchiro.Com/mua.Html.
Don't do it! A literature search resulted in only a couple of small case reports. Obviously not enough evidence of efficacy or safety for spinal application.