I had a accident which has caused a long time worth of pain in my leg. I was on the back of a bike when a man got out of his truck and our bike collided. The truck's door caused a huge impact on my knee and shoulder. My shoulder recovered after a day, however, my knee slowly worsen to the point where I couldn't even get up. Even after an year, I still get sudden pain to my leg if I over exhaust myself or walk too long or climb staircases back and forth or if I stand for too long.