I felt my right knee buckle inwards (toward the other leg) as i was falling yesterday while chasing a basketball. I tried to stand up and it felt as though the knee itself was wobbly and buckling inward again. I eventually got home after hopping on one leg to my friends car. Fast forward to this morning and i can't walk on that leg at all and can hardly put any weight on it. It just feels like my knee moves around when i try. Im just wondering if this sounds like an mcl or acl injury?