Like people, dogs have two cruciate ligaments to help provide support for the knee. Their presence keeps the femur and tibia from sliding around and destabilizing the joint. Repairing torn cruciates is a fairly most common surgery at our animal hospital. Certain breeds (Labradors and Rottweilers) show up with this injury more frequently than other pets. Click on Cruciate Ligament Surgery link to the left for more information.