These injuries rarely heal on their own due to not enough nutrients. When the free meniscus cartilage moves all over within your joint, it may cause locking or popping in the knee and knee instability. A seriously wounded meniscus can also result in arthritis. Rest and Rehabilitation: Relaxation is vital https://www.theorthopaedicandpainpractice.com/what-happens-if-i-injure-my-posterior-cruciate-ligament/