I can understand your situation. Pain on the outside of the knee
, or lateral aspect of the knee
joint, is commonly caused by lateral meniscus tears, lateral collateral ligament injuries, IT band tendonitis, and arthritis of the joint. Pain in the back of the knee can be due to the formation of a cyst, called a Baker's cyst in the back of the knee joint. Also common is for kneecap pain to be felt in the back of the knee.