Knee osteoarthritis: That is a degenerative joint ailment characterized through the breakdown of cartilage within the knee joint. It generally influences older men and women and can cause pain, stiffness, swelling, and lowered mobility. Surgical reconstruction of the PCL is controversial, and typically only advised for quality III PCL tears. https://www.theorthopaedicandpainpractice.com/what-happens-if-i-injure-my-posterior-cruciate-ligament/