These injuries seldom recover by themselves mainly because of the not enough nutrients. When the loose meniscus cartilage moves all over inside your joint, it may lead to locking or popping of your knee and knee instability. A severely injured meniscus might also produce arthritis. Surgical PCL reconstruction is hard https://www.theorthopaedicandpainpractice.com/what-happens-if-i-injure-my-posterior-cruciate-ligament/