Can try quadriceps exercises.
In case that brings stability to your patella retinacula.
Next Steps
1. Knee Quadriceps exercises ( Static- 10 times per hour, for 14-15 hours a day)
2. Knee Quadriceps exercises (Dynamic-4-5 times per day for 5 minutes)
3. Ice pack application, thrice daily for 5 minutes( cover with a plastic bag or cloth).