Anastasiadancer.
Google Chrodromalacia Patella. Something has caused the catalage to wear out. This is only a suggestion. Do you have feet or a foot that do not step in line with your knee. In other words are your feet turned out to a different line to your knee when you step.
If it were me I would steer off the Latin Style where the turn out of the feet is an important part of the dance. Good Luck.