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Juvenile panosteitis
Panosteitis is a painful inflammation of the inside of the long bones of the limbs, which affects growing dogs. It manifests itself as a limp that changes legs over the weeks, without injury or accident. It is this migratory character which...
What is it?
Panosteitis is a painful inflammation of the inside of the long bones of the limbs, which affects growing dogs.
It manifests itself as a limp that changes legs over the weeks, without injury or accident. It is this migratory character which distinguishes it from other causes of lameness in young dogs.
It is a self-limiting disease: it eventually disappears on its own when growth stops, but it can be very painful for several months.
Commonly observed signs
These signs are neither exhaustive nor specific. Only a veterinarian can establish a diagnosis.
Related signs — each one links to its page:
Lameness appearing suddenly in a young dog, without known trauma.
The lameness changes limbs after a few days or weeks: one front leg, then the other, then one hind leg.
Clear pain when pressing firmly on the middle of the long bone, between the joints: this is the most characteristic sign. The joints themselves are painless.
Episodes that come and go, interspersed with periods when the dog is doing very well.
Decreased appetite and depression during attacks.
Moderate fever in some dogs.
Refusal to play, to go up the stairs, dog who stays lying down.
When to consult without delay
This list does not replace veterinary advice. It gathers situations that justify a prompt consultation.
Causes and risk factors
The cause of panosteitis is not established. Several avenues have been mentioned, without definitive proof: hereditary factors, rapid growth, diet too rich in proteins and energy, episodes of stress or infection.
The disease is an inflammation of the tissue inside the bone, with temporary formation of new bone, which increases pressure and causes pain.
It is neither contagious nor the consequence of trauma.
Growing dogs, usually between five and eighteen months of age.
Large and very large breeds, in which the disease is significantly more common.
Predominance in males.
Food too rich in energy and protein for a large puppy.
Very rapid growth.
Diagnosis and care
Diagnosis is the veterinarian's responsibility, based on clinical examination and laboratory tests. Care is decided case by case.
The diagnosis is based mainly on clinical examination: the veterinarian successively presses the middle of each long bone and observes the dog's reaction. Severe pain at this level, with normal joints, strongly suggests panosteitis.
X-rays of painful limbs may show abnormal density inside the bone, but the images are sometimes normal at first and do not always follow the clinical signs.
The veterinarian rules out other causes of lameness in young large breed dogs: elbow dysplasia, articular cartilage disease, bone infection, trauma.
A blood test is sometimes taken when a fever or marked depression raises the possibility of another illness.
Treatment
Panosteitis heals on its own; treatment aims only to relieve pain during attacks.
Painkillers and anti-inflammatories are prescribed by the veterinarian during episodes, and stopped between attacks.
Relative rest is recommended as long as the dog is in pain: short walks on a leash, no running or jumping, gradual recovery when the pain subsides.
The veterinarian may advise reviewing the ration: a food suitable for large breed puppies, given in controlled quantities, avoids maintaining too rapid growth.
Never give your puppy a human anti-inflammatory: ibuprofen, aspirin and paracetamol can cause stomach ulcers, digestive bleeding and serious kidney or liver damage, sometimes fatal, in dogs. The veterinary molecules prescribed for him are the only ones suitable.
Treatment depends on the cause and the animal's condition: it must be determined by a veterinarian. No self-medication.
Prevention
There is no proven prevention, as the cause is not known.
Avoiding too rapid growth is still recommended: food designed for large breed puppies, measured quantity, no addition of mineral supplements.
Keep the puppy thin and limit strenuous efforts during growth.
Have any lameness in the young dog examined rather than immediately attributing it to growth: other more serious illnesses give the same signs at the beginning.
Possible complications
The disease leaves no after-effects on the bone: it disappears without deformation or osteoarthritis.
The main difficulty is pain, sometimes intense and repeated over several months.
The real risk is that of a diagnostic error: lameness wrongly attributed to panosteitis can delay the treatment of elbow dysplasia, a bone infection or, in very large dogs, a bone tumor.
When to see a veterinarian
Your puppy is limping without having fallen or been injured.
The lameness changes legs from one week to the next.
He cries or flees when you touch the middle of a leg bone.
He is depressed, eats less, has a fever.
A lameness persists for more than a few days or gets worse: it must be examined, even if you think it may be panosteitis.
A hard, fixed swelling on a bone in a very large breed dog should be shown to the veterinarian promptly.
Prognosis
The prognosis is excellent. The attacks repeat for a few months, then stop permanently once the growth is complete.
The dog has no after-effects: no lameness, no osteoarthritis, no deformation.
Only the growth period requires patience, rest during attacks and good pain control.
Frequently asked questions
My puppy limps on one leg then on another: is this serious?
A lameness that changes limbs in a young large breed dog primarily suggests panosteitis, a painful but benign disease. However, the diagnosis must be confirmed, because other, more serious illnesses begin in the same way.
How long does this last?
The attacks usually follow one another for several months, with completely normal periods between them. They stop on their own when growth stops.
Should you change your diet?
The veterinarian often checks the ration, because too rich a diet maintains rapid growth. A food designed for large breed puppies, in controlled quantities and without calcium supplements, is the rule.
Can I give him painkiller from my pharmacy during a seizure?
No. Human anti-inflammatories are toxic to dogs. Ask the veterinarian for a suitable treatment, to be given only during attacks.
References
WSAVA — World Small Animal Veterinary Association
Content reviewed by the TunisieVet editorial team · Updated 09 August 2026
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