Unlike humans, who typically damage their ACL from acute trauma, dogs generally will tear their CCL after a gradual breakdown of the ligament. Even dogs that seem to become suddenly lame and are diagnosed with a CCL tear have typically experienced gradual damage to the ligament which eventually completely tears, resulting in swelling and pain. There are many factors which may contribute to the likelihood of a dog tearing their CCL including:
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- Genetics
- Obesity
- Conformation