Patellofemoral pain syndrome or runner’s knee can be a boring pain within the patella, which is the front of one's knee. It is typically brought on by the way you walk or run, poor foot help, and extreme teaching. Medicines together with other treatments can be used to control pain https://www.theorthopaedicandpainpractice.com/what-happens-if-i-injure-my-posterior-cruciate-ligament/