ACL Injuries, Treatment, Prognosis, Diagnosis
A ruptured cranial cruciate ligament (CCL) is one of the most common and painful knee injuries in dogs. This in‑depth guide explains what causes CCL tears, how to recognize the signs, the pros and cons of each surgical option, what recovery looks like, and how to support long‑term joint health. Whether your dog has a sudden limp or chronic stiffness, this article helps you understand the condition and make informed decisions about treatment.
An ACL injury is one of the most common causes of hind leg lameness in dogs. More accurately, in dogs we often refer to this as a cranial cruciate ligament injury, but many pet owners know it simply as an ACL tear. This ligament plays an important role in stabilizing the knee, and when it becomes torn or damaged, dogs can develop pain, limping, stiffness, and difficulty bearing weight on the affected leg.
Some dogs suddenly hold the leg up after running or playing, while others develop a more gradual limp that worsens over time. In many cases, pet owners notice that their dog is slower to get up, reluctant to jump, or hesitant on stairs. Larger dogs are commonly affected, but ACL injuries can happen in dogs of many sizes and breeds.
One important thing to understand is that not every dog with an ACL injury shows the same signs. Some dogs are obviously painful right away, while others continue to walk on the leg but do so abnormally. Swelling around the knee, stiffness after rest, or ongoing limping are all reasons to have your dog evaluated.
Diagnosis usually starts with a physical examination. In many cases, the knee feels unstable or painful on exam, and X-rays may be recommended to look for joint changes, swelling, arthritis, or other possible causes of lameness. Once the problem is identified, treatment recommendations depend on your dog’s size, activity level, severity of the injury, and overall health.
For some dogs, surgery may be the best option to improve comfort and stability. In other cases, rest, weight management, anti-inflammatory support, and activity modification may be discussed. The right plan depends on the individual dog.
At Bushnell Animal Clinic, Dr. Roger Hart provides thoughtful evaluation for dogs with limping, pain, and mobility problems. If your dog is showing signs of an ACL injury, prompt veterinary attention can help determine the cause and guide the next steps in care. Early evaluation is important, because untreated knee injuries can lead to ongoing pain and worsening joint changes over time.
