Patellar tendonitis, also known as jumper’s knee, impacts the tendon connecting the kneecap to your shinbone. It is actually widespread among athletes like badminton gamers.  Torn meniscus – A meniscus tear happens once the knee is subjected to extreme force or twisting although the foot is planted on the ground. https://www.theorthopaedicandpainpractice.com/what-happens-if-i-injure-my-posterior-cruciate-ligament/