What Is The Treatment For Knee Pain?

hi, i am 23 and have been told i have anterior knee pain chondromalacia patella. i have been told by my doctors nothing can be done just to wear a support. it is constant hurting all the time, iam even dreaming about the pain and waking up to find iam in pain. i have taken all types of pain killers, anti inflammatories. used heat pack, supports and creams and its not getting any better. is there anything else that can be done, i have heard about arthoscopy, would that be any good