The knee contains two crescent-formed cartilage buildings identified as menisci, which act as shock absorbers and aid easy motion on the joint. Tears inside the meniscus or cartilage can establish from unexpected twists, deep squats, or degenerative adjustments after some time.  Bracing: A knee brace can provide aid and stability, https://www.theorthopaedicandpainpractice.com/what-happens-if-i-injure-my-posterior-cruciate-ligament/