My knee pops, gives way, hurts to walk and run, and is tight, my doctor say it is chondromalacia but i don't know please help me find an answer?

Yes: Chondromalacia patellae refers to wear and tear behind the kneecap. Anotehr name is patellofemoral stress syndrome. It is a tracking problem with the kneecap that typically results in this condition. Contributing factors include weakness or imbalance in muscles that control the kneecap, malalignment in the legs (knock-kneed) and over pronation of the feet. Treatment is typically conservative.