Back Of Knee Pain More Condition_symptoms What Can Cause Lower Back And Knee Pain?

What can cause lower back and knee pain? - back of knee pain more condition_symptoms

I am 16 years old and up to about 6 meters. I grew very rapidly in recent years, and I wonder if this could be the cause of my aching back and knees. I used to lifting weights. I'm not sure if this is important in all questions on this issue.