My guinea pig had that problem, she dragged her legs and was paralyzed acting. I took her to the vet, who was very knowledgable about guinea pigs and she gave her steroids. That healed her, but about 1 and 1/2 years later she seems to be getting it again. But good luck!
I have a guiney pig that had a leg prob I used to give him like a therapy. I held his legs while he walked and one day he was walking on all four feet again
Hi guinea pig one day just started dragging his let behind him he was in a lot of pain would not eat or drink had him at the vets a few times he did not know what was wrong with him. In the end had to get him put down because it was the kindest thing to do, he had no quality of life just sitting in his house and never coming out.
I would take him to the vets