Hello sir about 10-12 days ago while playing game, my right knee is impact by stone and blood come as normal so I use first aid and clean by dettol and goes to general doctor as I am hosteler student, but pain not goes 7 days as I think that because of wound, after that my exam are a near and I will go to outside, but now it's 12 days go pain occurs in my knee, no problem occurs but when I walk or step up or down the stairs, problem occurs, I saw on net, can its sign of knee ligament tear, Bcoz pain occurs, can it's also having the reason of non taking rest a single day, or what is the symptoms of knee ligament tear.