Hi...my numbness and weakness was on my left as well...it can have something to do with which side u have ur obstruction on....
Good luck tomorrow...post what u find out : )
My weakness was always on my right side, though it's been loads better since my surgery. I was always dropping and breaking glasses, and eventually started drinking everything out of mugs so I had a better grip. My sister, who also has Chiari, drops everything out of her left hand. I guess it varies by person.
I hope your NS appointment goes well tomorrow! Let us know what happens.
Claire