Causes, Diagnosis and Treatment of Diarrhea in Dogs). It is important to determine the cause so the appropriate treatment can be given. Your veterinarian will combine information from you, the physical exam, and possibly laboratory and other diagnostic tests to determine the cause of the diarrhea.
An anterior cruciate ligament (ACL) injury is a tear in the ACL ligament. The ACL is located in the middle of the knee joint and connects the lower leg bone to the thigh bone and prevents the leg bone from sliding too far forward at the knee, which would cause instability. Anterior Cruciate Ligament Injury.
The posterior cruciate ligament (PCL) is a ligament within the knee. Ligaments are tough bands of tissue that connect bones. The PCL -- similar to the anterior cruciate ligament (ACL) -- connects the thigh bone (femur) to your shin bone (tibia). Although it is larger and stronger than the ACL, the PCL can be torn.PCL tears make up less than 20% of injuries to knee ligaments.Injuries that tear the PCL often damage some of the other ligaments or cartilage in the knee, as well. In some cases, the ligament can also break loose a piece of underlying bone.n injury to the PCL can cause mild to severe damage. Doctors classify PCL injuries in these groups: 1  Grade I: The PCL has a partial tear. 2  Grade II: The ligament is partially torn and is looser than in Grade I. 3  Grade III: The ligament is completely torn and the knee becomes unstable.