How to Repair an Achilles Tendon Rupture in a Dog? | Treatment & Recovery Guide

ByDr. Michael

The Achilles tendon is a vital structure in a dog’s rear leg that enables walking, jumping, and running. When this tendon ruptures, it can cause significant pain, lameness, and loss of mobility. If your dog is limping, dragging a rear foot, or holding their leg in an abnormal position, you may be dealing with a serious injury. So, how do you repair an Achilles tendon rupture in a dog?

This comprehensive guide explains the causes, symptoms, diagnosis, and most importantly, the surgical and post-operative steps involved in repairing a ruptured Achilles tendon in dogs.

Table of Contents

What Is an Achilles Tendon Rupture in Dogs?

The Achilles tendon in dogs, also known as the common calcaneal tendon, connects several muscles (including the gastrocnemius and superficial digital flexor) to the heel bone (calcaneus). This structure is crucial for pushing off the ground and stabilizing the hock joint (the equivalent of the human ankle).

When partially or fully ruptured, dogs lose the ability to bear weight properly on the affected limb. The condition requires prompt veterinary attention and is most often treated surgically.

Common Causes of Achilles Tendon Injuries

There are several reasons a dog might experience an Achilles tendon rupture:

  • Trauma: Falls, blunt force injuries, or lacerations
  • Overuse: Repetitive strain in active or sporting dogs
  • Degenerative changes: Age-related weakening of the tendon
  • Injections or corticosteroid use: Rare but possible contributors to tendon degradation
  • Underlying disease: Some systemic illnesses or neuropathies can predispose dogs to tendon rupture

Medium to large breeds such as Dobermans, Labradors, and Greyhounds may be more prone due to their activity levels and musculature.

Signs and Symptoms of Achilles Rupture

Clinical signs vary depending on the severity of the rupture. Common symptoms include:

  • Sudden or progressive rear leg lameness
  • Walking with the hock “dropped” or touching the ground
  • Inability to stand on the toes (flat-footed stance)
  • Swelling or bruising at the hock or heel
  • Pain when the leg is extended
  • Visible tendon thickening or gap (in complete ruptures)

In partial tears, symptoms may be subtle and intermittent, often mistaken for arthritis or minor sprains.

repair a achilles tendon rupture in a dog

How Is It Diagnosed?

Veterinarians typically use the following steps to diagnose an Achilles tendon rupture:

1. Physical Examination

Your vet will assess gait, range of motion, and look for classic signs like a hyperflexed hock with an extended stifle.

2. Radiographs (X-rays)

X-rays may show changes in the calcaneus or evidence of swelling, but soft tissue damage is not always clearly visible.

3. Ultrasound or MRI

Ultrasound is a valuable tool for evaluating the integrity of tendons and determining if the rupture is complete or partial.

Early and accurate diagnosis is critical for successful surgical outcomes.

Surgical Repair of a Ruptured Achilles Tendon

In nearly all cases of moderate to severe rupture, surgical repair is necessary. The goal is to restore tendon continuity and normal limb function. Here’s what the process typically involves:

1. Pre-Surgical Prep

Includes blood work, anesthesia evaluation, and possibly antibiotics or anti-inflammatory medications to reduce swelling.

2. Tendon Realignment

The torn ends of the tendon are surgically exposed and sutured back together using special techniques such as locking loop or three-loop pulley suture patterns for strength and durability.

3. Reinforcement Materials

Sometimes synthetic mesh, bone anchors, or autologous grafts (from the dog’s own tissue) are used for reinforcement.

4. Immobilization

After surgery, the limb is immobilized using a splint, cast, or external fixator to allow the tendon to heal properly without tension.

Most dogs are under general anesthesia for 1–2 hours during surgery, and hospitalization may last one to three days depending on the case.

Post-Surgery Recovery and Rehabilitation

Proper post-operative care is just as important as the surgery itself. A typical recovery timeline looks like this:

First 6–8 Weeks

  • Strict rest and splint/cast wear
  • Leash walks only for bathroom breaks
  • Weekly or bi-weekly veterinary rechecks

Weeks 8–12

  • Splint removal
  • Begin controlled physical therapy
  • Gradual increase in leash walking duration

Months 3–6

  • Resume normal activity slowly
  • Ongoing strength and mobility exercises

Cold laser therapy, underwater treadmill work, and massage are often recommended to accelerate healing and restore full function.

Potential Complications and Prognosis

Most dogs recover well with proper surgery and rehabilitation, but potential complications include:

  • Infection at the surgical site
  • Implant failure or suture reaction
  • Re-rupture if activity is resumed too soon
  • Scar tissue formation limiting full range of motion

Prognosis: With proper treatment, most dogs regain 85–100% of limb function. Sporting or working dogs may need 6–9 months to return to peak performance.

FAQ

How long does it take for a dog to recover from Achilles tendon surgery?

Full recovery typically takes 3 to 6 months, with the first 6–8 weeks being the most restrictive. Physical therapy plays a big role in long-term success.

Can a partial Achilles rupture heal without surgery?

In rare cases, partial tears may improve with strict immobilization, but recurrence or progression to a full rupture is common. Surgery is usually recommended for lasting results.

What happens if an Achilles tendon rupture goes untreated?

The dog may develop permanent lameness, chronic pain, or joint instability. Over time, muscles atrophy and arthritis can set in.

Is Achilles tendon surgery expensive for dogs?

Yes, the cost can range from $2,000–$5,000+ depending on location, surgeon expertise, diagnostics, and follow-up care. Pet insurance may cover part of the expense.

Can dogs return to normal activity after Achilles surgery?

With successful surgery and rehab, many dogs regain near-normal mobility. However, high-impact sports or agility should be resumed with caution and veterinary clearance.

Conclusion

Repairing an Achilles tendon rupture in a dog is a complex process that involves surgery, structured recovery, and vigilant care. The earlier the diagnosis and intervention, the better the outcome. If your dog is showing signs of rear leg weakness, limping, or abnormal foot placement, don’t delay—seek veterinary attention promptly.

With a knowledgeable veterinary team and dedicated follow-up, your dog can return to an active, pain-free life.

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