A tooth (plural teeth) is a small, calcified, whitish structure found in the jaws (or mouths) of many vertebrates and used to break down food. Some animals, particularly carnivores, also use teeth for hunting or for defensive purposes. The roots of teeth are covered by gums.
Symptoms can include: 1  A popping sound (or a popping or snapping feeling) at the time of injury can sometimes be heard (or felt) if a ligament is completely torn. 2  Swelling of your knee. 3  Pain in your knee.  Tenderness around your knee on 1  touching. Not being able to use or move your knee normally.
If you think you have suffered an injury to your knee, specifically the LCL or any ligament, it is important to seek medical attention immediately. Some common LCL tear symptoms are: 1  Knee gives away when standing or under stress. 2  Locking or catching sensation when knee is moved.