Hey guys so I injured my knee last Saturday and I can't walk properly ever since. Basically I felt a pop in my knee during contact and I can't move my leg much afterwards, it felt numb though. Neither can I straighten nor bend my leg now and I can't put my weight on my injured knee or it would buckle. I've been limping over the weekend and I can't straighten my knee to walk properly or it will hurt. What can I do?