I am 36 years old. When the knee is in bent position I am getting knee pain. There is no pain if it is straight. This pain exists more than 6 years. Long back doctor advised MRI for knee. I have undergone the test and in the test report nothing found abnormal. Again in feb 2016, I have undergone MRI for the knee in which it states that" Anterior Cruciate Ligament shows signal change - Partial tear" Doctor suggested to do knee strengthening exercise. I am suffering the increased pain while doing the exercise. Kindly suggest whether the strengthening exercise gets permanent relief.