Hip Dysplasia in Dogs: Causes, Symptoms & Treatment

Hip dysplasia is a common orthopaedic condition that affects both dogs and puppies. It's a term used to describe abnormal hip joint development, which can lead to various health issues and discomfort for our canine companions.

This article aims to comprehensively understand hip dysplasia in dogs, including its causes, diagnosis, symptoms, treatment options, and preventive measures.

Hip dysplasia occurs when there is an abnormality in the development of the hip joint.  The hip joint is a ball-and-socket joint where the "ball" (the head of the femur or thigh bone) fits into the "socket" (the acetabulum, a part of the pelvis). These two components in a healthy hip joint fit together snugly, allowing for smooth and pain-free movement.

This abnormality can manifest in various ways, but it often involves:

• The hip socket (acetabulum) is too shallow, not adequately covering the femoral head.
• A misalignment between the femoral head and acetabulum.

Hip dysplasia is a multifaceted condition with both genetic and environmental factors contributing to its development. Its causes include:

• Genetic Predisposition: Certain breeds, such as Labrador Retrievers, German Shepherds, and Bulldogs, have a higher genetic predisposition to hip dysplasia. If a dog's parents have had hip dysplasia, the risk of their offspring developing it is significantly elevated.
• Rapid Growth: Puppies that experience rapid growth are more prone to hip dysplasia. The rapid increase in size can strain the developing hip joints, potentially leading to dysplasia.
  
• Poor Diet: Inadequate nutrition can hinder proper muscle development and joint stability, making dogs more susceptible to hip dysplasia. Feeding your dog a well-balanced diet that supports healthy growth is essential.
  

Hip dysplasia can manifest through various symptoms, and early recognition is crucial for timely intervention. The common symptoms of hip dysplasia that dogs can experience are:

• Lameness or limping.
• Struggle when standing up from a sitting or lying position.
• Less interested in physical activities they once enjoyed. 
• Avoid activities that require jumping or running.
• Audible clicking or popping sound when they walk.
• Bunny Hopping, where they use both hind limbs simultaneously to move.
• Difficulty climbing stairs.

Accurate diagnosis is crucial to determine the extent of hip dysplasia and plan the appropriate treatment. Veterinary professionals use a combination of methods for diagnosis.

1. Physical Examination

• Gait Analysis: The veterinarian will observe the dog's gait, looking for signs of lameness, limping, or an abnormal walking pattern. Dogs with hip dysplasia may exhibit a swaying or bunny-hopping motion in their hind legs.
• Range of Motion: The vet will assess the range of motion in the dog's hip joints. Reduced flexibility and discomfort during manipulation can be indicative of hip dysplasia.
  
• Pain Response: The veterinarian will apply gentle pressure and manipulate the hip joints to check for signs of pain or discomfort. Dogs with hip dysplasia may react by vocalising, flinching, or attempting to avoid the examiner's touch.
  

2. Radiography (X-rays)

• X-rays are a crucial diagnostic tool for confirming hip dysplasia and assessing its severity.
• The dog will typically be placed under sedation or anaesthesia for the procedure to ensure proper positioning and minimise stress.
  
• Two specific X-ray views are commonly used: the Dorsolateral View, which assesses the hip joint's congruency and the degree of hip joint laxity. Another is the Ventrodorsal View, which provides a clear image of the hip joint and its alignment.
  
• X-rays reveal any abnormalities in the hip joint, such as shallowness of the hip socket (acetabulum), malformation of the femoral head, and osteoarthritis.
  

The treatment of hip dysplasia in dogs aims to manage pain, improve joint function, and enhance the dog's overall quality of life. Here are common treatment options for hip dysplasia in dogs:

1. Weight Management and Diet Modification

• Maintaining a healthy weight is crucial for dogs with hip dysplasia, as excess weight places additional stress on the hip joints.
• A veterinarian or veterinary nutritionist can help create a suitable diet plan to achieve and maintain an optimal weight.
  
• Specialised diets that include omega-3 fatty acids and antioxidants may help manage inflammation and improve joint health.
  

2. Medications

• Nonsteroidal anti-inflammatory drugs (NSAIDs) can help reduce inflammation and alleviate pain associated with hip dysplasia. They are commonly prescribed to manage discomfort.
• In some cases, veterinarians may prescribe pain-relieving medications to manage chronic pain and improve the dog's comfort.
  

3. Physical Therapy

• Physical therapy exercises are designed to strengthen the muscles around the hip joint, improve joint stability, and enhance mobility.
• These exercises may include swimming, controlled walking, and passive range-of-motion exercises.
  
• Consult with a veterinary rehabilitation specialist for a tailored physical therapy plan.
  

4. Joint Supplements

• Supplements containing glucosamine, chondroitin sulphate, and omega-3 fatty acids can support joint health and reduce inflammation.
• Discuss supplements with your veterinarian to determine the most appropriate options and dosages for your dog.
  

5. Assistive Devices

• Mobility aids such as harnesses or slings can assist dogs with hip dysplasia in getting up and moving around comfortably. 
• Ramps or steps can be used to help the dog access elevated surfaces without the need for jumping.
  

6. Surgical Intervention

Surgery may be recommended for dogs with severe hip dysplasia or when conservative treatments do not provide sufficient relief. Surgical options include:

• Total Hip Replacement (THR) is the procedure where the damaged hip joint is replaced with an artificial joint, providing improved mobility and pain relief.
• Femoral Head Ostectomy (FHO) involves the removal of the femoral head, allowing the muscles to provide hip joint stability.
• Triple Pelvic Osteotomy (TPO) is typically performed on younger dogs to reposition the hip joint and improve its alignment.

After initiating treatment, your dog will require specific care and attention to ensure a smooth recovery.

• Limiting Activities: To prevent further strain on the hip joints, limiting strenuous activities during the recovery period is essential.
• Regular Exercise: Continuing with prescribed physical therapy exercises is vital. These exercises help maintain joint mobility and muscle strength.
  
• Follow-up: Scheduled follow-up appointments with your veterinarian are necessary to monitor your dog's progress and adjust the treatment plan.
  

Preventing hip dysplasia in dogs is essential for their overall well-being and quality of life. Here are some important steps you can take to prevent hip dysplasia in dogs:

• Responsible Breeding: Seek out responsible breeders who conduct health screenings. Ensure that the breeding dogs have hip joints rated as normal or higher according to the guidelines set by organisations like the Orthopaedic Foundation for Animals (OFA).
• Start a Healthy Diet: Proper nutrition is crucial for healthy bone and joint development. Choose a high-quality commercial puppy food that meets the nutritional needs of your dog's specific breed and size.
  
• Exercise Management: Avoid strenuous exercise for puppies, especially those of large breeds, until their growth plates have closed. Excessive exercise during growth can increase the risk of hip dysplasia. Gradually increase activity levels as your puppy grows, ensuring they have time to develop strong muscles to support their joints.
  
• Weight Management: Maintain your dog at a healthy weight throughout their life. Excess weight stresses the hip joints and can exacerbate hip dysplasia. Regularly monitor your dog's weight and adjust their diet and exercise accordingly.
  
• Educate Yourself: You should know about the specific needs and risks associated with your dog's breed. Different breeds have varying susceptibilities to hip dysplasia.

Hip dysplasia is a condition that requires diligent care and attention. It's crucial to be aware of the risk factors, maintain a healthy weight, provide proper nutrition, and exercise in moderation to support your dog's joint health. 

Regular veterinary care and responsible breeding practices play a crucial role in addressing and reducing the prevalence of hip dysplasia.