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When Is Lateral Suture the Right Option for a Torn CCL?

When Is Lateral Suture the Right Option for a Torn CCL?

Lateral Suture

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Owners

Learn when lateral suture surgery is the right choice for a torn CCL in dogs. Find out which dogs benefit most and what factors vets consider

By 

Sustainable Vet Group

Updated on

August 4, 2025

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When Is Lateral Suture the Right Option for a Torn CCL?

What Lateral Suture Surgery Is Meant to Treat

A torn Cranial Cruciate Ligament (CCL) is a common cause of knee pain in dogs. The ligament helps keep the stifle joint stable during walking and running. When it tears, the tibia slides forward with each step, causing pain and instability. Lateral suture surgery is done to fix this issue without cutting bone.

  • The surgery stabilizes the stifle joint by placing a strong synthetic suture outside the joint to act like the torn ligament.
  • It helps stop tibial thrust, which is the forward motion of the shin bone that happens every time the dog puts weight on the leg.
  • The procedure supports long-term healing by allowing scar tissue to build up around the joint, which helps maintain stability after the suture loses strength.

Lateral suture surgery is simple but effective for dogs with the right size and activity level. It gives the joint a chance to heal while restoring function and reducing pain.

Ideal Candidates for Lateral Suture Surgery

This surgery is most effective when used in dogs that match certain size, health, and activity levels.

  • Dogs under 35–50 pounds (15–23 kg)
  • Older dogs with low or moderate activity levels
  • Dogs with partial CCL tears or mild joint instability
  • Families needing a more affordable surgical option
  • Dogs with health issues that prevent bone-cutting surgeries

Choosing the right surgery depends on more than just the injury. Dogs that meet these criteria are more likely to recover well and avoid complications.

Lateral suture surgery provides a safe, low-impact solution when matched with the right patient. Always talk with your vet to confirm if this is the best approach for your dog.

When Lateral Suture May Not Be the Best Fit

Lateral suture surgery isn’t ideal for every dog. While it's effective in smaller, low-activity pets, there are certain situations where this technique may not hold up well—and knowing when to avoid it is just as important as knowing when to use it.

  • Dogs that are large or highly active often place too much stress on the nylon suture, increasing the risk of loosening or breakage. Over time, this can lead to joint instability, pain, or the need for a second surgery.
  • Dogs with a steep tibial slope or severe joint instability are also poor candidates. These structural issues cause more tibial thrust, which lateral sutures alone may not be able to control.
  • This technique is also not recommended for working dogs or athletes, such as agility competitors or hunting breeds, because their intense activity level can quickly overwhelm the repair.

Finally, success depends on strict post-op care. If the family is unable to limit activity or follow recovery plans closely, the surgery is more likely to fail.

In these cases, advanced options like TPLO may provide better stability and long-term results.

How Vets Decide if Lateral Suture Will Work

Vets don’t choose a surgery at random. They use a step-by-step process to see if lateral suture is the safest and most effective choice for your dog.

  • Physical tests check joint movement
    The cranial drawer and tibial thrust tests help detect instability and how the knee shifts under pressure. Vets also check for pain and joint swelling.

  • X-rays reveal hidden problems
    Imaging shows bone alignment, arthritis, and signs of meniscus damage. While the ligament itself isn’t visible, X-rays guide overall treatment planning.

  • The whole case is reviewed
    Your dog’s size, age, breed, activity level, and health conditions are all important. So is your ability to manage rehab and your treatment goals.

When all these factors line up—mild instability, smaller size, and committed home care—lateral suture becomes a reliable and safe solution. If not, your vet may recommend another approach.

Real Benefits of Choosing Lateral Suture

Lateral suture surgery offers several real-world advantages, especially when used for the right dog. It’s not just about fixing the knee—it’s about choosing a safe, practical option that fits your pet’s needs and your ability to care for them afterward.

  • Less invasive than bone-cutting surgeries
    This procedure doesn’t require cutting or reshaping bone, which means less surgical trauma and an easier recovery for many dogs.

  • Shorter surgical and anesthesia time
    Because the surgery is simpler, dogs spend less time under anesthesia—a big plus for older pets or those with other health issues.

  • Fewer risks from hardware
    No metal plates or screws are used, so there’s less chance of post-op issues like implant movement, infection, or long-term irritation.

  • Solid recovery in the right candidates
    When performed on small or low-activity dogs, the results are often excellent, with many dogs returning to full use of the leg.

  • More affordable for many families
    Compared to TPLO or TTA, lateral suture is generally more cost-effective and widely available in general veterinary clinics.

In the right hands and for the right dog, it’s a smart, proven solution.

Limitations and Risks to Consider

Lateral suture surgery works well in many cases, but it does have limits. Understanding the risks helps you make a better decision for your dog’s long-term health and mobility.

  • Higher risk of failure in the wrong dogs
    Large, athletic, or overly active dogs may put too much force on the suture. This increases the chances of it stretching, loosening, or breaking over time.

  • Joint instability can lead to arthritis
    If the suture doesn’t fully stabilize the knee—or if the dog moves too much too soon—the joint can stay loose. This may cause cartilage damage and lead to faster arthritis progression.

  • Not ideal for long-term use in heavy dogs
    Even if the surgery works at first, large or muscular dogs may wear down the repair. Over time, this could lead to renewed lameness or the need for a second surgery.

  • Suture problems from early activity
    Dogs that are not kept on strict crate rest and leash walks during the first few weeks are at higher risk of suture rupture or poor healing.

Lateral suture is safest when used with the right dog, a careful vet, and a dedicated recovery plan. Without that balance, the outcome can fall short.

What About Combining Lateral Suture with TPLO?

In some complex CCL cases, vets may consider combining lateral suture with TPLO to add extra support—but this approach isn’t common for routine injuries.

  • Used in special or unstable cases
    This combo is sometimes used when the knee has rotational instability that TPLO alone can’t fully control. It adds another layer of support to limit unwanted joint movement.

  • Not for standard CCL tears
    In most dogs with a typical CCL rupture, TPLO by itself is enough. Adding a lateral suture isn’t usually needed unless the joint shows signs of extreme looseness or past failed surgeries.

  • Higher demands on the dog and the owner
    Combining these techniques increases surgical time, cost, and recovery effort. There’s also a greater risk of swelling or stiffness afterward, so careful rehab is critical.

While this method can improve outcomes in difficult cases, it’s rarely the first choice. Your vet will only suggest it if the joint shows complex instability that one surgery alone may not solve. Most dogs recover well with just one method when properly matched to the case.

Simple Checklist: Is Lateral Suture Right for Your Dog?

If you’re weighing options for your dog’s CCL injury, this quick checklist helps you see if lateral suture surgery is a practical fit.

  • Your dog weighs under 50 lb (23 kg)
  • Your dog is older or not very active
  • You can commit to 6–8 weeks of strict recovery care
  • Cost is an important part of your decision
  • Your vet has ruled out steep tibial slope or severe instability

If you answered “yes” to most of these, lateral suture surgery could be a safe, effective, and budget-friendly choice.

But if your dog is large, highly active, or has complex joint issues, talk to your vet about stronger options like TPLO. Matching the right surgery to the right dog is key to a smooth recovery.

Final Thoughts: Choosing the Right Surgical Path

There is no perfect surgery, only the one that fits your dog’s specific needs. Lateral suture surgery is a reliable option when used in the right cases. It works well for smaller dogs, older pets, and families who can commit to proper rest and follow-up care.

This technique may not be the best choice for large or very active dogs, but for many others, it offers a less invasive and more affordable path to recovery. The key is matching the procedure to your dog’s size, activity level, and joint condition.

Always have an open conversation with your vet. Talk about your dog’s lifestyle, your budget, and how much support you can provide during recovery. When these factors line up, lateral suture surgery can bring strong, lasting results and a more comfortable life for your dog.

FAQs About Lateral Suture Surgery and CCL Tears

Is lateral suture still used by modern vets?

Yes, many general practice vets still use lateral suture surgery. It remains a trusted, effective option for small to medium dogs and is often preferred when advanced tools for TPLO or TTA aren't available. It's also chosen for dogs that need shorter anesthesia time or have health risks that make bone surgery less ideal.

What if my dog is just over the weight limit?

Weight is only one part of the decision. If your dog is slightly over 50 pounds but has a calm personality and low activity level, lateral suture may still be considered. Your vet will also look at joint condition, body shape, and your ability to manage a strict recovery. In borderline cases, a detailed assessment is essential.

How do I know if my dog has too much instability for this surgery?

Your vet will perform hands-on exams like the drawer and tibial thrust tests to check for instability. X-rays help rule out other joint issues. If the knee moves too much or if your dog has a steep tibial slope, lateral suture may not provide enough support. In that case, TPLO or TTA may be better options.

Can lateral suture work long-term in lazy large dogs?

It’s possible, but not guaranteed. Some large-breed dogs with very low activity levels can do well after lateral suture surgery. However, the risk of failure is higher due to weight and joint forces. Careful home management, controlled rehab, and vet approval are key. Your vet will guide you based on individual case details.

Do all dogs need rehab after lateral suture?

Yes, all dogs benefit from structured rehab. Even if the surgery is simple, rehab helps prevent stiffness, rebuild muscle, and restore normal walking. This may include leash walks, massage, and sometimes hydrotherapy. Skipping rehab can slow recovery and increase the chance of long-term joint problems or uneven movement.

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