I'm am Athlete and I am short for my age. Lately I have been having extreme pains in my knee, legs ,and sometimes arms. People have been telling me that it is just my body trying to grow,but I never seem to grow. Sometimes especially after a game of basketball my knee becomes so stiff and sore I can't jump or even run.I know I am to young to be having knee problems. How canI help/ prevent this? Is weightlifting an option? This is effecting my playing ability. Please Help!

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