Blood vessel blockage in the spinal cord caused by fibrocartilage fragments in dogs (Fibrocartilaginous Embolic Myelopathy, FCE)
- Occurrence: common
- Location of disease: Back/Tail
When to visit the vet?
Urgent see a veterinarian within 24 hours
If the condition worsens / symptoms persist, consult a veterinarian.
Definition
Fibrocartilaginous embolic myelopathy (FCE) is a sudden neurological condition in dogs caused by the blockage of blood vessels in the spinal cord, leading to a partial or complete loss of mobility.
The most important facts at a glance
Fibrocartilaginous embolic myelopathy (FCE) is a neurological disease in dogs in which fibrous cartilage material from the intervertebral discs enters the blood vessels of the spinal cord and blocks blood flow. This leads to insufficient blood supply and damage to the spinal cord tissue. The exact mechanism is still unclear, but injuries to the intervertebral discs appear to play a role. FCE mainly affects medium to large breeds such as German Shepherds and Labrador Retrievers, often after physical activity or also without any recognizable trigger. Symptoms include sudden Pain, Paralysis, and Gait disorders. Diagnosis is made through clinical examinations, MRI, and ruling out other causes. There is no specific cure, but rest and physiotherapy can support recovery. The prognosis depends on the severity of the damage; many dogs recover within weeks, especially if symptoms are mild. Preventive measures are limited because the causes are not fully understood. However, regular veterinary check-ups and a healthy lifestyle can help. Research focuses on understanding disease mechanisms, genetic risk factors, and improved diagnostic and therapeutic approaches.
Causes
Fibrocartilaginous embolic myelopathy is a condition in which an embolus made of fibrous cartilage enters the blood vessels of the spinal cord and blocks blood flow. This phenomenon occurs when small fragments of fibrous cartilage from the intervertebral discs enter the arteries of the spinal cord. This blockage leads to an interruption of blood supply to certain areas of the spinal cord, resulting in ischemia, meaning insufficient blood supply, and ultimately damage to the spinal cord tissue.
The exact mechanism by which fibrous cartilage enters the blood vessels is not yet fully understood. However, it is suspected that increased pressure or an injury to the intervertebral discs can cause cartilage material to escape and then enter the bloodstream. These emboli can block the small blood vessels of the spinal cord, leading to the characteristic symptoms.
FCE most commonly affects medium to large dog breeds and usually occurs in young to middle-aged dogs. Certain breeds such as German Shepherds, Labrador Retrievers, and Irish Wolfhounds appear to be more frequently affected. The condition typically occurs after physical activity or trauma, but can also appear without any recognizable triggers.
Symptoms
Symptoms of fibrocartilaginous embolic myelopathy usually appear suddenly and can become visible within minutes to hours after the event. Owners often notice that their dog suddenly has difficulty walking or develops Paralysis in one or more limbs.
Symptoms vary depending on the location of the embolus in the spinal cord. A blockage in the cervical spine can lead to weakness or paralysis of the front and hind legs, while a blockage in the thoracic or lumbar spine usually affects only the hind legs. Affected dogs often show no pain, which distinguishes FCE from other neurological conditions.
In addition to motor impairments, bladder and bowel dysfunction may occur, depending on the severity and location of the spinal cord damage. Reflexes in the affected limbs may be weakened or absent, and in some cases, there may be a loss of superficial sensation.
Therapy
There is no specific cure for fibrocartilaginous embolic myelopathy, but treatment aims to alleviate symptoms and support the animal’s recovery. Rest and restricted movement are crucial in the acute phase of the disease to prevent further damage.
Physiotherapy is often an important part of treatment and can help improve the dog’s mobility and muscle strength. Exercises to strengthen the affected limbs can speed recovery and improve overall quality of life. In some cases, hydrotherapy may also be considered, as it offers a gentle way to train the muscles.
In severe cases where bladder and bowel function are impaired, medical care may be required to prevent infection and further complications. As a rule, no surgical procedures are performed because they are not effective for FCE.
Prognosis and follow-up care
The prognosis for dogs with fibrocartilaginous embolic myelopathy depends on the severity and location of the spinal cord damage. Many dogs show significant improvement within a few days to weeks after symptoms appear, especially if symptoms are mild and only one limb is affected.
Dogs that can stand or walk independently within the first two weeks after diagnosis often have a good prognosis and can make a full recovery. In more severe cases, especially if multiple limbs are affected or there is no early improvement, the prognosis is less favorable.
Long-term complications such as permanent paralysis or neurological deficits can occur if the spinal cord damage is significant. However, early and continuous physiotherapy care can increase the chances of a full recovery.
Prevention
Because the exact cause of fibrocartilaginous embolic myelopathy is not fully understood, there are currently no specific prevention measures. However, it is recommended to minimize the risk of spinal injuries by avoiding excessive physical activity and traumatic events, especially in dogs that belong to susceptible breeds.
Regular veterinary check-ups can help monitor the dog’s general health and detect other diseases early that could weaken the spine. A healthy diet and an appropriate weight are also important factors that support the health of the spine and intervertebral discs.
Although there are no specific preventive measures against FCE, attentive care and observation of the dog can help detect possible signs of a neurological disease early and enable timely veterinary interventional care. This can significantly increase the chances of successful treatment and recovery.
Outlook on current research
Fibrocartilaginous embolic myelopathy (FCE) is a complex neurological problem in dogs caused by the presence of fibrous cartilage material in the blood vessels of the spinal cord. This disease leads to a sudden and often painless loss of mobility caused by a spinal cord infarction. Current research focuses on understanding the exact mechanisms by which cartilage material enters the blood vessels and blocks blood flow. A better understanding of these processes could lead to new treatment strategies aimed at quickly restoring blood flow and preserving spinal cord function.
Another key research topic is the investigation of genetic factors that could influence susceptibility to FCE. It is suspected that certain breeds such as the German Shepherd and the Labrador Retriever are more frequently affected. Researchers are working to identify genetic markers that indicate an increased risk and could enable preventive measures or targeted breeding programs in the future.
In addition, scientists are investigating innovative diagnostic techniques to detect FCE faster and more accurately. Current diagnostic procedures often include expensive and invasive procedures such as magnetic resonance imaging (MRI). The development of less invasive and more cost-effective methods could significantly improve the diagnosis of FCE, which in turn would enable faster treatment and better prognosis for affected dogs.
Treatment options for FCE are currently limited, mainly due to the lack of understanding of the disease. Current studies are exploring the use of physiotherapy and rehabilitation techniques to support recovery and the restoration of mobility in affected dogs. Earlier interventions appear to increase the chances of success, and research aims to develop the best possible protocols tailored to each dog’s individual needs.
Finally, research also examines the role of environmental factors in the development of FCE. Factors such as diet, exercise, and general health could play a role, and understanding these influences could lead to more comprehensive prevention strategies. However, research in this area is still in its early stages, and further investigations are necessary to draw solid conclusions.
Frequently Asked Questions (FAQs)
1. What is fibrocartilaginous embolic myelopathy?
2. Which dogs are most commonly affected?
3. What are the symptoms of FCE?
4. How is FCE diagnosed?
5. Is there a cure for FCE?
6. What is the prognosis for dogs with FCE?
7. What can I do to help my dog recover?
8. Can FCE be prevented?
9. Is FCE painful for dogs?
10. What research is currently underway to improve treatment?
Literature
- De Risio, L. (2015). A review of fibrocartilaginous embolic myelopathy and different types of peracute non-compressive intervertebral disk extrusions in dogs and cats. Frontiers in Veterinary Science, 2, 24. https://doi.org/10.3389/fvets.2015.00024
- Bartholomew, K. A., Stover, K. E., Olby, N. J., & Moore, S. A. (2016). Clinical characteristics of canine fibrocartilaginous embolic myelopathy (FCE): A systematic review of 393 cases (1973–2013). Veterinary Record, 179(25), 650. https://doi.org/10.1136/vr.103863
- Gandini, G., Cizinauskas, S., Lang, J., Fatzer, R., & Jaggy, A. (2003). Fibrocartilaginous embolism in 75 dogs: Clinical findings and factors influencing the recovery rate. Journal of Small Animal Practice, 44(2), 76–80. https://doi.org/10.1111/j.1748-5827.2003.tb00124.x
- De Risio, L., Adams, V., Dennis, R., McConnell, F. J., & Platt, S. R. (2007). Magnetic resonance imaging findings and clinical associations in 52 dogs with suspected ischemic myelopathy. Journal of Veterinary Internal Medicine, 21(6), 1290–1298. https://doi.org/10.1892/06-273.1
- De Risio, L., & Platt, S. R. (2010). Fibrocartilaginous embolic myelopathy in small animals. Veterinary Clinics of North America: Small Animal Practice, 40(5), 859–869. https://doi.org/10.1016/j.cvsm.2010.05.003
- Mari, L., Behr, S., Shea, A., Dominguez, E., & Driver, C. J. (2017). Outcome comparison in dogs with a presumptive diagnosis of thoracolumbar fibrocartilaginous embolic myelopathy and acute non-compressive nucleus pulposus extrusion. Veterinary Record, 181(11), 293. https://doi.org/10.1136/vr.104090
- Embersics, C., Bannasch, D., Batcher, K., Boudreau, E. C., Church, M., Miller, A., Platt, S., Koehler, J., Olby, N., Rossmeisl, J., Rissi, D., Grahn, R., Donner, J., & Dickinson, P. J. (2024). Association of the FGF4L2 retrogene with fibrocartilaginous embolic myelopathy in dogs. Journal of Veterinary Internal Medicine, 38(1), 258–267. https://doi.org/10.1111/jvim.16925
- Togawa, G., Lewis, M. J., & Devathasan, D. (2024). Outcome in paraplegic dogs with or without pain perception due to thoracolumbar fibrocartilaginous embolic myelopathy or acute non-compressive nucleus pulposus extrusion. Frontiers in Veterinary Science, 11, 1406843. https://doi.org/10.3389/fvets.2024.1406843
- Phillips, K., & Freeman, P. (2025). Exercise restriction does not change outcome in dogs after diagnosis of acute non-compressive nucleus pulposus extrusion, fibrocartilaginous embolism, or hydrated nucleus pulposus extrusion. Journal of Veterinary Internal Medicine, 39(4), e70135. https://doi.org/10.1111/jvim.70135