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Supporting Dogs Diagnosed with Osteosarcoma
Canine Osteosarcoma – All You Need to Know
Understanding Canine Osteosarcoma
Caring for a dog diagnosed with osteosarcoma can feel overwhelming, but there are ways to support their comfort and mobility throughout their journey. Understanding how to help your dog maintain balance and ease of movement, even during treatment and recovery, is key to preserving their quality of life. In this article, we explore how supportive tools like orthoses can play an important role.
Written by:
Dr. Emily Hall DVM, CCRT, CPAT-KA
What Is Osteosarcoma in Dogs?
Osteosarcoma is the most common type of bone cancer in dogs. It typically affects the long bones of the limbs, such as the radius, humerus, femur, or tibia, and occurs most frequently in large and giant breeds.
The disease is aggressive in nature, with cancer cells that destroy healthy bone tissue and often spread to other parts of the body, particularly the lungs.
Is Your Dog Affected by Osteosarcoma? Fill out the form below and provide the most important information about your dog’s condition. Our specialists will review the details and recommend the best possible treatment options and next steps.
Common Signs and Symptoms of Canine Osteosarcoma
Signs of osteosarcoma can include lameness, swelling over a limb, or sudden pain without a visible injury.
How Is Osteosarcoma Diagnosed in Dogs?
Diagnosis is usually made through radiographs (X-rays), sometimes followed by advanced imaging or biopsy. Because the affected bone becomes weak and prone to fracture, early treatment is essential for pain relief and quality of life.
Treatment Options for Dogs with Osteosarcoma
Whether your dog is undergoing surgery, receiving palliative care, or adjusting after limb amputation, you may be wondering how supportive tools like orthoses or mobility devices fit into their care.
The short answer is that they can help, but it is important to understand the whole picture and always seek the guidance of your rehabilitation, surgical specialist, oncologist, and/or primary care veterinarian.
Why Orthoses Aren’t Applied to the Affected Limb
`When a limb is affected by osteosarcoma, applying direct external pressure, such as from an orthosis, is not recommended. The cancer weakens the bone and increases the risk of fracture, even during normal movement. Adding the pressure or constraint of a brace can raise that risk further.
Radiation therapy can also be a blessing but complicates Veterinary Orthotic and Prosthetic use. While sometimes used to slow cancer progression, radiation impacts soft tissue healing and skin integrity. This makes the area more prone to irritation, delayed healing, or pressure sores, and typically rules out the use of prosthetics or external support on the affected leg.
For these reasons, custom orthoses are not used directly on the limb with active osteosarcoma or undergoing radiation treatment.For these reasons, custom orthoses are not used directly on the limb with active osteosarcoma or undergoing radiation treatment.
Where Orthoses Can Help
While we do not brace the affected limb, we can support the rest of the body — especially when a dog is recovering from amputation or shifting weight away from a painful leg.
In these cases, the remaining limbs often work harder to keep your dog mobile. This shift can lead to joint strain, fatigue, or long-term issues like soft tissue injury or osteoarthritis in the remaining limbs. That’s where lightweight, custom orthoses can provide valuable support.
Your pet’s comfort matters.
Explore Whether WIMBA Orthotics Can Support Your Dog’s OA Journey
How the WIMBA Go Supports the Body
The WIMBA Go is a custom-fitted orthosis designed for proactive support of distal joints, such as the carpus (wrist) or tarsus (ankle). It is used on limbs showing early signs of overuse or instability to help prevent further damage or fatigue.
WIMBA Go orthoses are:
Custom 3D Printed
Custom made with advanced materials and 3D printing technology.
Lightweight
Designed to be as light as possible, allowing for natural and comfortable movement throughout the day.
Supporting Joints
Designed to support joints and reduce compensatory strain.
Easy to Integrate
Easy to integrate into long-term comfort and mobility plans.
When used alongside rehabilitation, WIMBA Go orthoses help preserve whole-body function and support a more balanced gait during recovery or long-term care.
Additional Ways to Support Comfort and Mobility
Orthoses are just one part of a broader plan. Many dogs benefit from a combination of home modifications, mobility tools, and hands-on rehabilitation care.
Some practical options include:
Supportive harnesses that allow safe lifting during transitions, stairs, or uneven terrain
Non-slip flooring, such as yoga mats or carpet runners, to reduce fall risk in the home
Nail grips or traction socks for dogs who have difficulty with smooth floors
(Image source)
Wheeled carts, which may be recommended in specific cases by a rehabilitation professional, especially when hindlimb strength or balance is compromised, and should be prescribed and fitted by a veterinary professional to avoid potential harm.
Targeted rehabilitation exercises that maintain strength, flexibility, and coordination.
Pain management and nutritional support, guided by your veterinarian.
These tools work together to reduce stress on the body, maintain independence, and protect quality of life.
Final Thoughts
Osteosarcoma is a difficult diagnosis, but it doesn’t have to mean the end of comfort or mobility. While orthoses are not used on limbs affected by cancer or radiation, they can still play an important role in maintaining balance and reducing the physical cost of compensation.
With thoughtful planning and collaborative care, we can protect your dog’s comfort and dignity every step of the way.
Next Condition
PET STORIES
WIMBA Orthosis in Action:
Cruciate Ligament Rupture
Jack
Diagnosed with immune-mediated thrombocytopenia (ITP), an autoimmune disease, surgery was simply too risky for Jack. So when he ruptured his CCL, conservative management became the only option. With the support of his dedicated vet and rehabilitation team – and a custom WIMBA Stifle Brace – Jack has regained stability, confidence, and improved weight-bearing throughout his recovery.
“Since fitting Jack has increased his walks, he has improved weight bearing and in time will gain more hamstring muscle mass. We’ve got a journey to go yet but safe to say Jack is ending the year on a positive note.”
Vault Physiotherapy
Carpal Joint Hyperextension
Oslo
Meet Oslo, a five-year-old Australian Shepherd who loves exploring the summits of the Haute-Savoie and the Alps. Following surgery, he now experiences carpal hyperextension, which impacts his mobility and overall quality of life. The introduction of the WIMBA orthosis marked a significant turning point in Oslo’s recovery.
“I found out about WIMBA, a company that manufactures custom-fit braces in collaboration with vets, for which lightness and mobility are its main assets. Easy to put on, it has really changed Oslo’s life! I’ve rediscovered my dog, through lots of mountain activities and outdoor sports!”
Flo Vani
Owner of Oslo
Cranial Cruciate Ligament Rupture
Simba
Simba, a 31 kg dog, was diagnosed with cranial cruciate ligament rupture. With the support of the WIMBA Stifle Brace, Simba’s mobility is improving. See how the WIMBA Stifle Brace adds stability to Simba’s stifle joint.
Compensatory Carpal Hyperextension Injury
Barry
After suffering a severe carpal hyperextension injury in October 2024, Barry has gone through a lot. Today, in the first part of Barry’s story, we’re sharing a huge milestone – his first steps in his WIMBA Carpus Go brace! This is just the beginning, but seeing him regain mobility and confidence makes every challenge worth it.
Is Your Dog Affected by Osteosarcoma?
Osteosarcoma in dogs is challenging. Fill in the form below and describe your pet’s case, including the vet’s diagnosis. Please upload any photos, diagnostic images, or videos of the affected limb(s) — we’ll assess if your pet may benefit from a custom-fit WIMBA brace.
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This blog post is for informational purposes only and should not replace professional veterinary advice. Always consult your veterinarian for an accurate diagnosis and tailored treatment plans for your pet.
Frequently Asked Questions: Osteosarcoma in Dogs
What is osteosarcoma in dogs?
Canine osteosarcoma (OSA) is a malignant bone tumour and the most common primary bone cancer in dogs. It accounts for approximately 85% of canine bone tumours. OSA most commonly affects the appendicular skeleton (limbs), particularly the distal radius, proximal humerus, distal femur, and proximal tibia. It is most prevalent in large and giant breeds including Great Danes, Irish Wolfhounds, Saint Bernards, Rottweilers, and Greyhounds. OSA is aggressive and painful; it metastasises early, most commonly to the lungs.
Can a brace help a dog with osteosarcoma?
A custom limb orthosis can be part of a palliative or limb-sparing support strategy in dogs with appendicular osteosarcoma. For dogs undergoing palliative management without amputation, or in the period preceding limb-sparing surgery, a custom splint or orthosis may help stabilise the affected limb, reduce pathological fracture risk, and maintain limited weight-bearing comfort. The decision to use an orthopaedic device in an OSA patient should be made by the oncologist and surgical team based on tumour location, bone integrity, and prognosis.
What is the standard treatment for osteosarcoma in dogs?
The standard of care for appendicular osteosarcoma is amputation followed by adjuvant chemotherapy (typically carboplatin or doxorubicin). This approach results in median survival times of 10–14 months, with approximately 20% of dogs surviving to 2 years. Limb-sparing surgery — removing the tumour segment and replacing with a bone graft or implant — is an option for selected tumours in anatomically suitable locations. Palliative radiotherapy and pain management are used when surgery is not pursued.
What are the signs of bone cancer in dogs?
The most common signs are progressive, often severe lameness that does not respond to standard pain management; localised swelling at the tumour site (most commonly over a joint); pain on palpation; and sometimes pathological fracture. OSA pain is often disproportionately severe relative to external appearances. Any dog presenting with persistent unexplained lameness and bony swelling — particularly in large breeds — should be evaluated for OSA. Diagnosis is confirmed by radiography; definitive diagnosis requires biopsy.
How do I find a vet who can assess my dog for bone cancer?
Osteosarcoma diagnosis and management requires an oncologist or specialist surgeon. Your primary vet can perform initial radiographs and refer to a veterinary oncology centre. If your dog requires orthotic support as part of limb-sparing or palliative management, find a WIMBA-certified provider who can work alongside the oncology team to assess whether a custom orthotic device is appropriate for your dog’s situation.
