Seven-year-old Rottweiler with torn CCL.

In humans this same ligament is called the ACL. Although you cannot see the torn ligament on x- rays, a veterinarian can see the characteristic changes that are consistent with a torn CCL. You can see that the slope of the joint was measured on the pre-operative x-ray. This slope was changed with a procedure called a TPLO (tibial plateau leveling osteotomy) seen on the post-operative xray. The ligament is not replaced in this procedure. The change in slope allowed Buster to function normally without his cranial cruciate ligament. He went onto make a full recovery. However, I did see him back 2 years later when he tore his right CCL. Sadly, it is not unusual for a dog to tear the CCL in his other leg at a later date.