Grade III Is a totally torn or ruptured ligament. This is not a broken bone, but can sense like one particular because it’s often unachievable to put weight around the joint or make use of the impacted limb because the joint isn’t stable. (Don’t place ice specifically on your skin). https://aroraclinic.weebly.com/blog/understanding-and-overcoming-knee-ligament-injuries-a-comprehensive-guide