Hip dysplasia is a developmental orthopedic disease in which the hip joint's ball-and-socket form and function are abnormal, causing laxity, osteoarthritis, and chronic pain. Signs include a swaying gait, difficulty rising, reluctance to run or jump, and an audible pop in the hip. Early intervention — weight management, physical therapy, and appropriate pain control — can preserve quality of life for years before surgical options become necessary.
Last reviewed: June 2026
What Is Hip Dysplasia in Dogs?
Hip dysplasia results from abnormal development of the coxofemoral (hip) joint, where the femoral head fails to seat properly in the acetabulum (socket). The resulting laxity causes repeated microtrauma that leads to progressive osteoarthritis (OA). The COAST Development Group, 2023 defines OA in dogs as a degenerative joint disease characterized by articular cartilage degradation, subchondral bone remodeling, and periarticular osteophyte formation — all of which are present in advanced hip dysplasia. Over 70% of Labrador Retrievers and approximately 19% of Golden Retrievers are affected based on radiographic screening databases; large and giant breeds are at highest risk, though any breed can be affected.
Signs of Hip Dysplasia
Clinical signs span a wide spectrum depending on the degree of joint laxity and OA severity. In puppies (5–12 months), signs are often related to laxity rather than OA: decreased activity, a bunny-hopping gait, reluctance to use stairs, and a clicking or popping sensation in the hips. In adult and senior dogs, the presentation shifts toward OA-dominant pain: difficulty rising from rest, stiffness that eases with movement (especially notable in the morning), a swaying hindquarter gait, and progressive loss of hindlimb muscle mass (hindquarter atrophy).
Common signs:
- Swaying, wobbly, or waddling gait in the hindquarters
- Difficulty rising from a lying or sitting position
- Reluctance or inability to climb stairs, jump into a car, or run
- Audible or palpable hip click (especially in young dogs)
- Reduced hindlimb muscle bulk (thighs feel thin compared to the front legs)
- Behavior changes: irritability when hips are touched, decreased play drive
- Morning stiffness that improves after warming up with gentle movement
Diagnosis and Grading
Diagnosis combines physical examination and radiography. Your vet will perform an Ortolani test (manipulation that reveals hip laxity) and assess range of motion and pain response. Radiographs taken under sedation are used to score OA severity. The Penn HIP distraction index is a validated laxity measure used in breeding programs. There is no minimum age cutoff for radiographic diagnosis — signs in puppies as young as 4 months can be radiographically confirmed.
Treatment Options
The AAHA Pain Management Guidelines, 2022 outline a multimodal approach: NSAIDs (carprofen, meloxicam, grapiprant) as the backbone, combined with gabapentin or amantadine for central sensitization, omega-3 supplementation, and physical rehabilitation. Weight management is arguably the most impactful non-pharmacologic intervention — reducing body weight by 15–20% measurably reduces lameness scores. For young dogs with significant laxity but minimal OA, triple pelvic osteotomy (TPO) or double pelvic osteotomy (DPO) can correct joint geometry. Total hip replacement (THR) is the most effective surgical option in skeletally mature dogs, with success rates exceeding 90% in experienced hands. Femoral head and neck ostectomy (FHO) is a salvage procedure for smaller dogs or when finances preclude THR.
When to See a Vet
Call your vet today if:
- Your dog is bunny-hopping, swaying, or suddenly reluctant to use stairs
- Your puppy (4–18 months) is showing rear limb weakness or clicking hips
- Your dog cries out when their hip or lower back is touched
Go to the ER immediately if:
- Your dog suddenly cannot use or bear weight on both hindlimbs
- Your dog appears to be in severe pain that isn't relieved with rest
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Frequently Asked Questions
At what age do hip dysplasia signs appear in dogs? Signs can appear as early as 4–6 months in severely affected puppies, and most dogs with significant disease show signs by 12–18 months. Mild cases may be clinically silent until middle age or later, when advancing OA causes pain despite decades without symptoms.
How much does hip dysplasia treatment cost? Conservative management (NSAIDs, supplements, physical therapy) runs $100–$400 per month depending on the medication and program. Surgical options range widely: FHO costs $1,500–$3,500 per hip; TPO/DPO runs $2,500–$4,500; total hip replacement averages $4,000–$7,000 per hip at specialty centers. Diagnostic radiographs under sedation typically add $300–$600.
What breeds are most affected by hip dysplasia? Large and giant breeds carry the highest burden, particularly German Shepherds, Labrador Retrievers, Golden Retrievers, Rottweilers, and Saint Bernards. Smaller breeds like Bulldogs and Pugs also have surprisingly high rates. The COAST Development Group, 2023 notes that breed-specific OA prevalence data are essential for informed preventive screening.
Can hip dysplasia be prevented? Genetic screening of breeding stock reduces (but does not eliminate) risk. Maintaining optimal body weight during growth, avoiding high-impact exercise in puppies under 1 year, and feeding large-breed puppy food (avoiding excess calcium) are the best-evidenced preventive measures. OFA/Penn HIP evaluation of parents before breeding is standard in responsible programs.
Does hip dysplasia get worse with age? Yes — hip dysplasia causes progressive OA that typically worsens with time. However, the rate of progression varies enormously. Some dogs are well-managed with medication for many years; others deteriorate quickly. Regular reassessment (every 6–12 months) allows treatment adjustments before pain becomes inadequately controlled.
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