Legg-Calvé-Perthes Disease in Dogs: Symptoms, Treatment & Recovery
> Disclaimer: This article is for informational purposes only and is not a substitute for professional veterinary advice. Always consult your veterinarian for diagnosis and treatment of your dog's health conditions.
Legg-Calvé-Perthes disease (LCPD)—also called Legg-Perthes or avascular necrosis of the femoral head—is a condition in which the blood supply to the femoral head (the “ball” of the hip joint) is disrupted. The bone tissue dies, collapses, and causes arthritis and pain. It primarily affects small-breed dogs and typically develops during puppyhood. With proper diagnosis and treatment, most dogs can regain excellent function.
What Is Legg-Calvé-Perthes Disease?
Legg-Calvé-Perthes disease involves interruption of blood flow to the femoral head. Without adequate blood supply, the bone dies (avascular necrosis), collapses, and deforms. This leads to inflammation, cartilage damage, and progressive arthritis in the hip joint. The condition usually affects one hip, though both can be involved. It typically appears in dogs 4–12 months of age, with small and toy breeds most at risk.
Symptoms of Legg-Calvé-Perthes in Dogs
Early Signs
- Lameness in one or both hind legs
- Reluctance to bear weight on the affected leg
- Muscle wasting (atrophy) in the thigh of the affected limb
- Stiffness or shortened stride
Progressive Symptoms
- Persistent or worsening lameness
- Pain when the hip is moved or extended
- Obvious discomfort when rising or lying down
- Reduced activity and play
Emergency Signs
Legg-Calvé-Perthes is not typically an emergency, but sudden severe lameness, inability to walk, or signs of trauma warrant prompt evaluation.
What Causes Legg-Calvé-Perthes in Dogs?
The precise cause is unknown. Contributing factors may include:
- Genetics: Hereditary factors are strongly suspected; the condition is more common in certain breeds.
- Compromised blood supply: Thrombosis, vascular anomalies, or other factors may reduce blood flow to the femoral head.
- Trauma: Minor repetitive trauma has been suggested as a possible trigger in some cases.
Breeds Most at Risk
- Manchester Terriers
- West Highland White Terriers
- Miniature Poodles
- Yorkshire Terriers
- Chihuahuas
- Lakeland Terriers
- Cairn Terriers
- Other small and toy breeds
How Legg-Calvé-Perthes Is Diagnosed
- Physical examination: Lameness, pain on hip manipulation, and muscle atrophy.
- X-rays: Collapse, flattening, and irregularity of the femoral head; signs of arthritis; sometimes fragmentation.
- Rule-outs: Hip dysplasia, patellar luxation, and other causes of hind limb lameness are considered.
- Advanced imaging: CT or MRI may be used in complex cases.
Treatment Options for Legg-Calvé-Perthes
Medical Management
- Pain relief: NSAIDs and other analgesics as prescribed by your veterinarian.
- Rest and exercise restriction: To reduce stress on the hip during the acute phase.
- Medical management alone may improve comfort but does not correct the structural damage. Surgery usually offers the best long-term outcome.
Surgical Options
- Femoral head and neck excision (FHNE): Removal of the diseased femoral head and neck. A “false joint” forms from scar tissue, allowing pain-free movement. This is the standard treatment for LCPD and yields excellent results in small dogs.
Alternative/Supportive Therapies
- Physical therapy after surgery
- Weight management
- Joint supplements (e.g., glucosamine, chondroitin) as recommended
- Controlled, low-impact exercise during recovery
At-Home Care
- Strict rest after surgery as directed
- Administer pain medication and any other prescribed medications
- Gradual return to activity per veterinary instructions
- Monitor the surgical site and overall comfort
Prognosis & Life Expectancy
With femoral head and neck excision, the prognosis is excellent in small dogs. Most achieve very good to excellent function and normal life expectancy. In larger dogs, FHNE may be less effective; arthroplasty or other options may be discussed. Early surgical treatment generally gives the best outcomes.
Prevention
There is no guaranteed way to prevent LCPD. Purchasing from reputable breeders who avoid breeding affected dogs may reduce risk in predisposed breeds.
Cost of Treatment
- Diagnosis: $150–$400 (exam, X-rays)
- Femoral head and neck excision: $1,500–$3,500+ (varies by region and facility)
- Postoperative care: Medication and follow-up visits