My Mom just had spinal fusion of her L-5 S-1 and afterwards she can stand and walk but when she extends her knee fully she has a stabbing pain in the back of her knee and cannot extend it. The main thing i wanted to ask about though is 8 days after her surgery (aka today) she layed down and she had these needle like tingling feelings all around her face and mouth and cheeks, and an excruciating pain in the back of her head, and her eyes went a little zig zaggy, then she sat up the tingles got worse around her mouth cheek and ear area. The tingles stopped after she got up and walked around but when she layed back down she now feels as tho she has a bad migrain in her temples and the back of her eyes and alot of pressure in her head. Shes had a migraine before but wat happened with the tingles and vision problems she said she never felt that in her life, she also says theres a squishy water sound in her head when she tips her head from side to side. Please any help would be greatly appreciated.