Understanding Panosteitis in Great Danes: Signs and Care

Panosteitis — often called "growing pains" — is a self-limiting inflammatory bone condition classically described in young, rapidly growing large and giant-breed dogs. Because Great Danes are a giant breed with very rapid early growth, panosteitis is well recognized in this breed. However, your Great Dane at 5–6 years of age falls into the senior category for the breed (typical lifespan 7–10 years), and persistent or new-onset lameness at this age is much more likely to represent other, often more serious conditions (osteosarcoma, [hip dysplasia](https://seniorpet.org/knowledge/golden-retriever-hip-dysplasia "Hip Dysplasia in Senior Dogs"), cervical spondylomyelopathy/wobbler syndrome, infection, or degenerative joint disease). This article explains what panosteitis is, how it typically presents in Great Danes, how it is diagnosed and managed, and how to distinguish it from the major senior-age orthopedic and systemic conditions Great Dane owners need to watch for.

What is panosteitis?

Panosteitis is an inflammatory process affecting the long bones (primarily the diaphysis/shaft) that produces increased medullary (inside-bone) density and periosteal/endosteal new bone formation on radiographs. It most commonly affects young, large and giant breeds (including Great Danes, German Shepherds, Dobermans, and others). Clinically it causes episodic, often shifting lameness and bone pain. The exact cause remains unclear; proposed factors include genetic predisposition, rapid growth, and altered bone remodeling.

Key breed points for Great Danes:

• Great Danes are predisposed due to very rapid growth during puppyhood and the mechanical demands on long bones.
• Typical age of panosteitis onset is juvenile — commonly between about 5 and 18 months. In adult/senior Great Danes, panosteitis is uncommon; new long-bone pain in a 5–6-year-old should prompt thorough workup for other causes.

(References: veterinary radiology and orthopedic texts; panosteitis described in veterinary literature and breed predisposition documented in large-breed studies.)

Typical signs of panosteitis in Great Danes

When panosteitis occurs (mostly in puppies and adolescents), owners commonly report:

• Episodic lameness that may suddenly appear and then shift to another limb over days to weeks.
• A lame gait that can be severe enough to cause intermittent non–weight-bearing.
• Pain when palpating the long bones (especially the humerus, radius, ulna, femur, and tibia).
• Low-grade fever, lethargy, and reduced appetite occasionally.
• No progressive swelling localized to a bone (in contrast to bone tumors).

Important breed-specific note: In Great Danes, the long bones are proportionally large, and clinical pain can appear dramatic relative to the dog's overall demeanor. Because panosteitis is typically juvenile, a Great Dane aged 5–6 with new persistent lameness is more likely to have another disease (see differential diagnoses below).

How panosteitis is diagnosed

Diagnosis is by a combination of history, clinical exam, and radiographs:

• History of episodic/migratory lameness in a young, growing Great Dane supports panosteitis.
• Clinical exam frequently reveals focal pain on palpation over long bone shafts and refusal to bear weight during flare-ups.
• Radiographs are essential: characteristic findings are increased medullary opacity/density in the affected diaphyseal bone, sometimes with periosteal/endosteal reaction. These radiographic changes often lag behind clinical signs by a few days.
• CBC/biochemistry are usually normal or show mild nonspecific changes; inflammatory markers are not diagnostic.

If lameness occurs in an older Great Dane (5–6 years), radiographs that show focal lytic bone lesions, cortical destruction, or soft-tissue mass should lead to further investigation (biopsy, orthopedic oncology consult) because osteosarcoma and other pathologies are more likely.

(References: veterinary radiology texts; diagnostic approach described in orthopedic literature.)

Treatment and care for panosteitis

When panosteitis is confirmed in a juvenile Great Dane, treatment is supportive and aimed at pain control and activity modification:

Medical and supportive care

• NSAIDs under veterinary guidance (carprofen, meloxicam, etc.) are commonly used to control pain and inflammation. Monitor liver and kidney values as advised by your veterinarian.
• Short periods of exercise restriction during flare-ups — controlled leash walks rather than running, jumping, or stairs — until pain subsides.
• Adjunct pain control may include gabapentin for neuropathic-type pain or short courses of opioids in severe flare-ups. Use of medications should always be under direct veterinary supervision.
• Maintain lean body condition. Excess weight increases forces across developing bones and joints; target a body condition score of roughly 4–5/9 for giant breeds.
• Provide supportive bedding and ramps/steps to minimize jumping. Orthopedic bedding reduces pressure on painful limbs.
• Physical therapy modalities (controlled range-of-motion, underwater treadmill once pain controlled) can help maintain muscle mass and joint health under veterinary or certified canine rehabilitation guidance.

Duration and prognosis

• Panosteitis is self-limiting; most dogs recover fully over weeks to months, although flare-ups can recur intermittently for several months in some dogs.
• Most juvenile Great Danes with panosteitis do not suffer long-term orthopedic disability from it, but repeated severe episodes warrant ongoing orthopedic monitoring.

Important senior-dog caveat: In a 5–6-year-old Great Dane, do not assume panosteitis. New or progressive lameness in senior-age Great Danes requires radiography and often referral to rule out osteosarcoma, severe osteoarthritis/hip disease, infection, or other causes.

Distinguishing panosteitis from serious senior-age conditions in Great Danes

Great Danes are predisposed to a set of conditions that commonly affect senior dogs in this breed. The following table summarizes clinical clues and diagnostics that help distinguish panosteitis from major differential diagnoses.

| Condition | Typical age in Great Danes | Key clinical signs vs panosteitis | Distinctive diagnostic findings | Typical next steps | |---|---:|---|---|---| | Panosteitis | Juvenile (≈5–18 months) | Episodic, shifting lameness; bone shaft pain; often systemic signs mild | Radiographs: increased medullary density along diaphysis; no focal lytic lesion | Supportive care, NSAIDs, rest; radiographic monitoring | | Osteosarcoma | Older juveniles to seniors (peak middle-aged to older for giant breeds) | Progressive, severe, focal lameness; localized swelling; often non–migratory | Radiographs: lytic and/or productive bone lesion, cortical destruction; biopsy confirms tumor | Orthopedic oncology referral, staging (thoracic radiographs/CT), amputation ± chemo | | Hip dysplasia / osteoarthritis | Young adult to senior | Stiffness after rest, difficulty rising, hindlimb lameness; chronic, bilateral possible | Radiographs: hip subluxation, degenerative joint changes | Weight loss, NSAIDs, joint supplements, physiotherapy, surgical options | | Cervical spondylomyelopathy (Wobbler) | Typically adult to senior | Neck pain, ataxia, hind limb weakness, gait abnormalities (not sole limb pain) | Cervical radiographs, MRI/myelography: spinal cord compression | Neurology referral; conservative or surgical options | | Bone infection (osteomyelitis) | Any age | Focal pain, fever, systemic illness | Radiographs and culture; bloodwork may show inflammatory leukogram | Antibiotics guided by culture; surgery if sequestra present | | Hypothyroidism (contributor) | Middle-aged | Lethargy, weight gain, poor haircoat, sometimes secondary lipoma/dermal changes and joint disease | Low T4, high TSH or positive anti-thyroid antibodies | Endocrine workup and thyroid replacement | | GDV (Gastric dilatation-volvulus) | Senior and adult deep-chested dogs | Acute abdominal distension, retching, collapse — emergency (not lameness) | Abdominal radiographs show distended, rotated stomach | Emergency surgery; consider prophylactic gastropexy in at-risk dogs |

Use the table as a guide; individual cases vary. When in doubt, get radiographs and specialty consultation.

(References: Withrow & Vail’s Small Animal Clinical Oncology for osteosarcoma; ACVIM/orthopedic texts for wobbler and hip dysplasia; Glickman et al., JAVMA for GDV risk factors.)

Why an older Great Dane’s lameness is often NOT panosteitis

Because panosteitis is primarily a disease of young, growing dogs, persistent or new-onset lameness in a 5–6-year-old Great Dane should prompt investigation for:

• Osteosarcoma — Great Danes are among breeds at risk for primary bone tumors.
• Hip dysplasia/degenerative joint disease — chronic progressive pain that may worsen with age.
• Wobbler syndrome — if neurologic signs or ataxia are present.
• Infections or metabolic bone disease including hypothyroidism indirectly worsening musculoskeletal health.

Therefore, radiographs are essential. If imaging shows focal destructive bone lesions, immediate referral to an orthopedic/oncology service is indicated.

Screening and monitoring recommendations for senior Great Danes

Given breed-specific risks in Great Danes, owners of senior (5–6-year-old) dogs should consider the following proactive measures:

Cardiac screening (dilated cardiomyopathy - DCM)

• Great Danes have a higher risk of DCM and arrhythmias compared to many breeds. Annual cardiac evaluation by your primary care veterinarian (auscultation, ECG if indicated) is recommended. If abnormalities are detected (murmur, arrhythmia, exercise intolerance), referral for echocardiography and cardiology assessment is warranted. Biomarkers (NT-proBNP, cardiac troponin I) can be helpful adjuncts but are not substitutes for echo in diagnosis and staging. (See ACVIM consensus statements on canine DCM.)

GDV (bloat) prevention

• Great Danes are at high risk for GDV. Preventive strategies supported by research include:

- Consider prophylactic gastropexy (laparoscopic or open) at the time of spay/neuter or as a separate elective surgery in at-risk dogs — gastropexy dramatically reduces risk of gastric volvulus recurrence. - Feeding management: multiple smaller meals per day rather than one large meal; avoid vigorous exercise immediately before and after meals. - Avoid fast gulping of food (use slow-feeders, puzzle feeders). - Evidence from case-control studies (Glickman et al., JAVMA 2000) identified large, deep-chested breeds, age, raised food bowls, and certain feeding practices as risk factors; discuss bowl type and feeding routine with your veterinarian.

Joint health and osteoarthritis

• Maintain ideal weight. Consider controlled low-impact exercise (regular leash walks, swimming if supervised), joint supplements (omega-3 fatty acids with EPA/DHA have evidence for anti-inflammatory benefits), and early veterinary treatment of osteoarthritis with appropriate analgesia and rehabilitation.

Thyroid testing

• Hypothyroidism can contribute to fatigue and degenerative disease. For middle-aged Great Danes with weight gain, poor coat, or unexplained orthopedic signs, check thyroid panel (total T4, free T4, and TSH or thyroid autoantibodies as appropriate).

[Cancer](https://seniorpet.org/knowledge/siamese-cat-cancer-surveillance "Cancer in Senior Pets") surveillance

• Any persistent limb pain, focal swelling, or progressive lameness in a senior Great Dane warrants prompt radiographs and thoracic imaging to stage for possible bone tumor (osteosarcoma commonly metastasizes to the lungs).

Practical, actionable advice for Great Dane owners

What to watch for at home

• New, persistent, or progressive lameness — obtain a veterinary exam and radiographs.
• Any limping that does not improve in 48–72 hours or is getting worse.
• Localized swelling over a bone, especially if persistent — immediate veterinary evaluation.
• Signs of GDV: unproductive retching, distended abdomen, restlessness, collapse — this is an emergency; take your dog to a veterinary emergency hospital immediately.

What to discuss with your veterinarian

• Provide a clear timeline of signs (onset, severity changes, any previous episodes).
• Ask for orthogonal radiographs (at least two views) of the affected limb(s) and thoracic radiographs if bone tumor is a concern.
• For older dogs with lameness, ask whether endocrine testing (thyroid), joint evaluation, or cardiac screening is recommended.

[Home care](https://seniorpet.org/knowledge/pillar/home-care-guide "Senior Pet Home Care Guide") when panosteitis is suspected (juvenile Great Danes)

• Manage pain under veterinary supervision with prescribed NSAIDs; do not give human NSAIDs intended for people.
• Restrict high-impact activity during flare-ups (no running, jumping, or stairs); leash walks only.
• Use ramps/steps to access cars and couches; provide supportive bedding.
• Maintain ideal weight — calorie control as advised by your veterinarian.
• Consider a referral to a certified canine rehabilitation practitioner for guided strengthening once the acute pain resolves.

When to seek emergency care

• Acute collapse, severe breathing difficulty, distended abdomen (suspect GDV).
• Severe limb pain with obvious bone deformity or inability to bear any weight.
• Rapidly enlarging limb mass, persistent fever, or signs of systemic illness.

When to consider specialist referral

Refer to an orthopedic surgeon or oncologist when:

• Radiographs show focal lytic lesions, cortical destruction, or periosteal reaction suspicious for osteosarcoma.
• Chronic, progressive lameness does not respond to conservative therapy or diagnostic uncertainty persists.
• Advanced imaging is needed (CT, MRI) to characterize lesions or plan surgery.

Refer to a cardiologist when:

• Murmur, arrhythmia, syncope, exercise intolerance, or signs of heart failure are present. Echocardiography is the gold standard for diagnosing DCM and assessing cardiac function.

Summary and prognosis

Panosteitis is a known cause of episodic lameness in juvenile Great Danes and usually resolves with supportive care. However, in a 5–6-year-old Great Dane, new or progressive lameness should prompt a full diagnostic workup because other breed-predominant diseases (osteosarcoma, hip dysplasia/osteoarthritis, wobbler syndrome, DCM, hypothyroidism) are more likely at senior ages and can carry significant morbidity. Prompt radiographs, appropriate bloodwork, cardiac screening, and early referral when indicated improve outcomes. Preventive strategies — weight control, controlled exercise, gastropexy discussion for GDV prevention, and routine cardiac screening — are practical steps owners can take to protect their senior Great Danes.

Selected references and further reading

• Glickman LT, Glickman NW, Schellenberg DB, et al. Evaluation of risk factors for gastric dilatation-volvulus in dogs. Journal of the American Veterinary Medical Association. 2000;216(3):372–377.
• Withrow SJ, Vail DM, Page RL (eds). Withrow & MacEwen's Small Animal Clinical Oncology. 5th ed. Elsevier; details on bone tumors and staging.
• Textbook references on diagnostic imaging and orthopedics (e.g., Thrall DE, Textbook of Veterinary Diagnostic Radiology) for radiographic appearance of panosteitis and bone lesions.
• ACVIM consensus statements and veterinary cardiology literature for dilated cardiomyopathy screening and management.

(Your primary-care veterinarian or a veterinary specialist can provide the most current, breed-specific testing and treatment recommendations for your Great Dane.)