Replying to Patella femoral syndrome exersises

idk how many of you know what it is or have it but i used searchbar coudnt come up with that much but anyway its basically when ur kneecap doesnt slide right and it gives you uncomfortable and pains in your knees. i get it pretty bad after skiing especially after breaks which are 7-11 days of skiing straight and by the end of the witner i have trouble walking on it sometimes.

so anyway im looking for exersies to help solve this problem iv looked on google and i coudntn find that much. if anyone does any exersises or has this problem and what they do for it that would be great. ++++K