if this is a procedure done months ago and you do not have the murderous postural headache indicating an unhealed hole where the needle went in, i think your fluid levels are probably adequate but there are other things going on.
forgive me going straight to nutrition, it's just what i do. here is a link to one of my favourite sites on nutrition and a multitude of health issues. my signature links provide other info you may find useful.
great info. i am amazed there is no mention of vitamin D3 here, however. the relationship between vitamin d3 and osteoporosis (closely linked to scoliosis) is known.. level has to be at least in the 70s (nmol/L) to keep PTH down and prevent osteoporosis. should be even higher 100-150 nmol/L to help deal with MS.
zinc in scoliosis doesn't seem to be much of an issue, but it is in ms, so if you're interested and have not already done so, read up on zinc status in ms.
an abstract on another scoliosis relevant yet not mentioned nutrient: selenium
also check out the main page http://www.ctds.info/
to see all the diverse health issues addressed.