Radius curvus syndrome in dogs

What is Radius Curvus Syndrome?

Radius Curvus Syndrome (also known as Short Ulna Syndrome or Carpus Valgus) is a growth disorder of the forelegs in which the radius and ulna grow at different rates. This can lead to a visible curvature of the forelegs, resulting in a deformity. This can significantly alter the load on the joints, especially in growing dogs.

Possible Causes

The main cause is premature atrophy or disruption of the growth plate, usually the ulna. This can be genetic, caused by trauma, or by unbalanced feeding during growth. Breed-specific predispositions also play a role, especially in dogs with rapid growth or special anatomical characteristics.

Typical Symptoms

The symptoms of radius-curvus syndrome can vary depending on the severity, but typically include:

• Crooked, asymmetrical forelegs
• Irregular gait or lameness
• Pain during exercise
• Abnormal joint position in the forefoot area

Depending on the severity, the gait can be significantly impaired. As the condition progresses, secondary joint changes or compensatory stress on other structures may occur.

Affected Breeds

Large or fast-growing breeds such as Great Danes, Labradors, Golden Retrievers, Bernese Mountain Dogs, Rottweilers, or Mastiffs are particularly affected. However, smaller breeds such as Basset Hounds or Dachshunds can also be affected. In these breeds, breeding traits can contribute to the malposition.

Diagnosis and Course

Diagnosis is usually made through an orthopedic examination and imaging techniques such as X-rays. The course depends on the severity of the malposition, the time of diagnosis, and the measures taken. In milder cases, adapted exercise and targeted feeding are often sufficient. Severe cases sometimes require surgical intervention.

Further Tips for Everyday Life

Especially in young dogs with unusual gait or deformities, it is important to keep a close eye on their development. Non-slip surfaces, joint-friendly exercise and a balanced diet appropriate for the child’s age can help to support growth positively. Regular check-ups with your veterinarian are also advisable so that early intervention can be made if misalignments become more severe.