A cranial cruciate ligament tear in a dog's leg. My dog, Lulu the beagle, recently had surgery for this and is recovering. 5 things every dog owner should know about dogs, pain, a ligament tear and your pet's health.
Figure 1. Illustration of the anatomy of the dog’s knee: Blue = cranial cruciate ligament; Red = meniscus; Green = caudal cruciate; the insert shows a ruptured cranial cruciate ligament (also note that the shinbone is displaced forward and is crushing the meniscus)