Grade III is a totally torn or ruptured ligament. This isn't a damaged bone, but can come to feel like one because it’s normally difficult to put body weight around the joint or use the impacted limb because the joint isn’t stable. ACL Tears in Woman Athletes: Q&A with a https://www.tumblr.com/aroraclinic/749825971550601216/understanding-and-overcoming-knee-ligament?source=share