Kneecap pain and aces due to softball catching

Patient: I have been a catcher for almost 9 years now. I am the only catcher on my team so I am constantly bending squatting and dropping down on top of my knees. I have pain in my knees when I run and walk and also when I twist my knees certain ways. I can no long cross my legs due to the shooting pain in the sides of my knee caps. what can I do?

Symptoms: Pain, shooting pain, soreness, aches