9 Causes of Dog Back Legs Weak And Treatment Options

dog back legs weak

Dogs are more than just pets; they are cherished members of the family who bring joy and love into our lives.

As much as we cherish their playful personalities and happy tail wags, it’s important to understand that they can face health challenges as they age.

One of the most common issues that can affect a dog is hind leg weakness. This can have a significant impact on their mobility and quality of life.

Recognizing our dog’s condition is crucial as pet owners. We should seek treatment options to help our furry friends live their best lives.

In this article, we’ll dive into:

  • The causes of hind leg weakness,
  • The common symptoms to watch for, and
  • Various treatment alternatives available to support your dog’s health and mobility.

Let’s get started!

What is back leg weakness in dogs?

If you see your dog suddenly struggling to stand up or walk, you know how heart-wrenching it can be. Unfortunately, back leg weakness is a common issue. It affects many dogs, regardless of their age, breed, or size.

Back leg weakness can be caused by a variety of factors, including injury, disease, and old age. It can also be a sign of a more serious underlying health condition.

Why are dogs’ hind legs collapsing?

A hind leg collapse in a dog can be caused by several factors. This includes hip dysplasia, arthritis, spinal injuries, and degenerative conditions.

These conditions can cause the muscles, tendons, and ligaments in the hind legs to weaken. It makes it difficult for the dog’s legs to stand or walk.

In some cases, sudden hind limb weakness or collapse can also be a sign of a more serious underlying condition, such as cancer or peripheral nerve damage.

9 Causes of Hind Leg Weakness in a Dog

There are several causes of hind weakness in dogs, including:

1. Arthritis

Arthritis is a common condition that affects many dogs. This is most especially common for a senior dog or an overweight dog.

It is caused by the inflammation of the joints, which can lead to pain, stiffness, and reduced mobility.

Arthritis can affect any joint. This includes the hips back legs, and knees, which can lead to hind limb weakness.

2. Hip Dysplasia

Hip dysplasia is a genetic condition that affects many dog breeds. This is most common for large breed dogs like German Shepherds and Labrador Retrievers.

It occurs when the hip joint does not develop properly. This can result in discomfort, inflexibility, and limited movement. Hip dysplasia can cause hind limb weakness and can also lead to arthritis later in life.

3. Degenerative vertebral conditions

Degenerative vertebral conditions, such as degenerative myelopathy and fibrocartilaginous stenosis, can cause hind weakness in dogs.

These conditions affect nerve tissue in the spinal cord. It can lead to a loss of nerve function, which can affect the dog’s ability to stand or walk.

4. Intervertebral Disc Disease (IVDD)

Intervertebral disc disease is a condition that affects the discs between the vertebrae in the spine.

It occurs when the discs degenerate or become herniated. It can put pressure on the nerves, leading to weakness of your dog’s back legs.

5. Endocrine diseases

Endocrine diseases, such as Cushing’s disease and Addison’s disease, can cause hind leg weakness in dogs.

These conditions affect the adrenal glands. It can lead to hormonal imbalances that affect the dog’s ability to stand or walk.

6. Canine degenerative myelopathy

Canine degenerative myelopathy is a progressive disease that affects the backbone of the.

It is most commonly seen in larger dogs, like German Shepherds. It can cause hind limb weakness, as well as other symptoms like balance instability and complete paralysis.

7. Amputation

Amputation of one of the hind legs can cause hind leg weakness in dogs. The remaining hind leg function has to bear more weight and pressure than before. This leads to joint discomfort, stiffness, and dog’s sudden inability to do its daily routine.

8. Post-operative limitations

Dogs that have undergone surgery on the hind legs, may experience hind limb weakness during the recovery process.

The trauma to the muscles and tendons surrounding the surgical site can lead to a sudden inability of the dog to perform its daily routine.

Post-operative limitations can be temporary or permanent. It depends on the type of surgery and the individual dog’s response to it

9. Spinal cord injuries

These injuries are a common cause of hind leg weakness in dogs.

These injuries can be caused by trauma, such as a fall or by degenerative conditions such as degenerative myelopathy.

When the spine of your beloved dog is injured, the nerves that control the hind legs may be damaged. It can cause hind limb weakness or paralysis.

In some cases, the full hind limb weakness or leg weakness may be accompanied by other symptoms such as loss of bladder or bowel control.

Warning signs that your dog is experiencing hind leg weakness include:

  • Dragging of the hind legs,
  • Loss of coordination or balance,
  • Difficulty standing up or walking,
  • Reluctance to jump or climb stairs,
  • Abnormal gait, such as “bunny hop”,
  • Unsteadiness or stumbling while walking,
  • Muscle wasting or weakness in the hind legs, and
  • Inability to control bladder or bowel movements.

What other signs or symptoms should I be watching for?

In addition to the weak hind legs, there are other signs or symptoms that may indicate a problem with your dog’s hind legs. These include:

  • Changes in gait or posture,
  • Limping or favoring one leg,
  • Loss of muscle tone or mass,
  • Swelling or stiffness in the joints,
  • Pain or sensitivity when touched,
  • Difficulty getting up or lying down,
  • Yelping or whining when touched or moved, and
  • Decreased activity level or exercise intolerance.

If you notice any of these symptoms in your dog, it is important to have them evaluated by a veterinarian as soon as possible.

Diagnosis of Back Leg Weakness in Dogs

The first step in diagnosing back leg weakness in dogs is a thorough physical exam by a veterinarian.

During the exam, the veterinarian will look for signs of pain, swelling, or deformity in the hind legs. They will also evaluate your dog’s weight, gait, posture, and muscle tone. This will help them assess the extent of the weakness.

Additional diagnostic tests may be needed to identify the underlying cause of your senior dog’s hind limb weakness. These may include:

  • Blood tests to check organ function and screen for endocrine disorders,
  • Urinalysis to check kidney function and screen for urinary tract infections,
  • X-rays or other imaging tests to check the bones and joints of the hind legs,
  • Electromyography (EMG) or nerve conduction studies to check nerve and muscle function, and
  • Neurological exam to check nerve function and rule out spinal injuries or a neurological disorder.

In some cases, a referral to a veterinary neurologist may be necessary for a more in-depth evaluation of your dog.

Treatment of Back Leg Weakness in Dogs

The treatment of back leg weakness in dogs will depend on the underlying cause of the weakness. In some cases, the weakness may be temporary and resolved with rest and supportive care. In other cases, more aggressive treatment may be necessary.

Treatment Alternatives for Hind Leg Weakness

  • Pain medications: Anti-inflammatory drugs such as nonsteroidal anti-inflammatory drugs may be prescribed. It is for pain relief and inflammation in the joints and muscles of the hind legs of your dog.
  • Physical therapy: This can be beneficial in strengthening the muscles of the hind legs. It also improves the normal function of your dog. This may include exercises such as swimming or underwater treadmill therapy.
  • Weight management: Maintaining a healthy weight is important for larger dogs with hind weakness in dogs. Excess weight can place extra stress on the joints and muscles of the hind legs.
  • Joint supplements: Supplements such as glucosamine and chondroitin sulfate can also be beneficial in managing joint conditions that may be causing hind weakness in your old dog. These supplements help to improve joint health and reduce inflammation. It can alleviate discomfort and improve mobility.
  • Surgery: In some cases, surgery may be necessary to correct the underlying condition causing hind weakness in dogs. For example, if the dog has a disc herniation or spinal injury, surgery may be needed. This is to relieve pressure on the nerves and restore function to the hind legs.

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When Medical Care Isn’t Enough: Support and Mobility Products

For dogs that are experiencing hind leg weakness, support, and mobility products can help to improve their dog’s quality of life. These products include:

  • Harnesses and slings: These products can be used to support the dog’s hind legs and help them to walk or stand. They are particularly useful for dogs that are weak or unable to support their own weight.
  • Wheelchairs: A dog wheelchair can be a great option for dogs that have trouble walking because of hind leg weakness. These devices allow the dog to move around freely while providing support for their hind legs.
  • Orthotics and prosthetics: These devices can be used to improve mobility and support the dog’s hind legs. Orthotics are braces that are worn on the legs, while prosthetics are artificial limbs that are attached to the dog’s body.

How to Help Your Dog Walk

If your older dogs are experiencing hind weakness, there are several things you can do with one hind leg, to help them walk:

  • Take shorter walks and provide plenty of breaks,
  • Use a harness or sling to support their hind legs,
  • Use a dog wheelchair or other mobility device if necessary,
  • Provide a soft surface for your dog to walk on, such as grass or carpet, and
  • Avoid stairs and other obstacles that may be difficult for your dog to navigate.


Hind weakness in dogs can be caused by a variety of conditions. It can be caused by arthritis, hip dysplasia, spinal cord injuries, and more.

If you notice that your dog is experiencing hind weakness, it’s important to consult with a veterinarian as soon as possible. They will be able to determine the underlying cause and develop an appropriate treatment plan.

With the right treatment and support, most dogs with hind leg weakness can continue to lead happy and active lives.


Why are my dog back legs weak all of a sudden?

The abrupt collapse of a dog’s hind legs may be a symptom of various conditions. It could be orthopedic problems, spinal cord injury, or degenerative joint disease.

This kind of sudden hindleg weakness requires urgent medical attention. It may indicate an underlying disease that needs to be addressed promptly.

How can I help my dog with weak back legs?

As pet parents, you can help your dog with weak back legs by providing a supportive and safe environment. You can manage any underlying health conditions, and use various mobility aids and therapies.

It’s also important to monitor your dog’s behavior, appetite, and hygiene. Regularly consult with your vet regularly for check-ups and advice.

How long can dogs live with weak dog’s back legs?

The lifespan of dogs with weak dog’s back legs can vary widely depending on many factors. It could depend on the underlying cause (like acute injury), age, breed, and overall health.

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