Here at Aztec Animal Hospital, we are fully equipped to help your dog when he is injured. One of the most common knee injuries in dogs is a cranial cruciate ligament, or CCL, tear. This ligament is comparable to that of a human’s ACL, so you can imagine how painful an injury like this can be for a dog. When a dog is experiencing a CCL tear, he will most likely not be able to walk and will be in a great deal of pain. If left untreated, a CCL tear can lead to further, permanent damage to the affected area and the onset of osteoarthritis.

Our team here at Aztec Animal Hospital is highly trained in treating CCL tears, and we are here to support your pet through each step of the repair and healing process. If you believe your pet has suffered a CCL injury, we recommend bringing him in as soon as possible so that we can identify the problem and prevent any further damage. Surgery is most often required to repair CCL tears, and our specialists will be happy to answer any questions you may have about your pet’s treatment and post-operative care.

Cranial Cruciate Ligament

Cranial Cruciate Ligament Rupture – The Anterior Cruciate Ligament (ACL) is a common injury in humans, and in dogs, the equivalent is called the Cranial Cruciate Ligament (CCL). CCL disease is multifactorial and often a chronic condition. It is most commonly seen in active dogs, can be hereditary, may result from trauma, and is often related to the dog’s tibial plateau anatomy. Dogs with steep tibial plateaus are more likely to rupture their CCL.

Clinical Signs

  • Sudden lameness in a rear limb, especially after running, jumping, or slipping
  • Signs of pain or reluctance to bear weight
  • Partial tears may result in intermittent lameness or only mild discomfort

Diagnosis

  • Performed through a physical orthopedic exam
  • Sedation or pain management may be recommended to reduce stress during examination

Radiographs

  • X-rays are taken to rule out fractures or other abnormalities
  • Helpful in identifying arthritis or chronic joint changes associated with cruciate disease

Treatment Options

Medical Management

Some small or less active dogs may benefit from non-surgical options, or these therapies may be used alongside surgery to improve healing:

  • PRP (Platelet-Rich Plasma): Concentrated platelets from the dog’s own blood help stimulate tissue repair and reduce inflammation.
  • Stem Cell Therapy: Regenerative cells promote healing and joint stabilization in early or partial CCL injuries.
  • Adequan Injections: Help protect cartilage, reduce inflammation, and slow the progression of arthritis.
  • Anti-Inflammatory Medications: NSAIDs and pain relievers can help manage discomfort and support joint health.
  • Weight Management and Controlled Exercise: Essential to reducing strain on the joint.

Surgical Treatment

In most large breed or highly active dogs, surgery is the recommended route for a successful outcome and to reduce the chance of long-term joint damage. Our veterinarians will help determine which option is best for your dog’s breed, size, and condition.

  • TPLO (Tibial Plateau Leveling Osteotomy): Changes the angle of the knee joint to stabilize it without needing the CCL.
  • TTA (Tibial Tuberosity Advancement): Similar to TPLO, but uses a different mechanical approach to reduce stress on the ligament.
  • Extracapsular Repair (Lateral Suture Technique): A strong suture is placed outside the joint to stabilize it; often used in small to medium dogs.
  • TightRope CCL: A less invasive technique using strong synthetic materials to mimic the ligament function.

Regardless of which surgery is chosen, post-operative care is essential. Strict rest is required for 6–8 weeks or more, with gradual reintroduction of controlled activity. Dogs that rupture one cruciate ligament have a 60% chance of rupturing the other within two years, so early intervention and preventative care are crucial.

For more information about our medical or surgical options, or to schedule an evaluation, please contact us today at (480) 945-6800. Our team is here to support you and your pet every step of the way.