If you have this condition, you might hurt when you: Go up or down stairs Kneel or squat Sit with your knees bent for a long time, such as during a movie or plane ride You might also hear popping or crackling in your knees when you climb stairs or get up after you’ve been sittin...
The back knee should be in line with the hip when it is bent.[4] Being in the proper position will ensure that you don't injure your knee when you put pressure on it. 2 Do a slow, controlled lunge. Lower your body down far enough so that the back knee is close to the floor,...