Hi stranger! Signing up for MypetMD is easy, free and puts the most relevant content at your fingertips.

Get Instant Access To

  • 24/7 alerts for pet-related recalls

  • Your own library of articles, blogs, and favorite pet names

  • Tools designed to keep your pets happy and healthy



or Connect with Facebook

By joining petMD, you agree to the Privacy Policy.

PetMD Seal

Bone Deformity and Dwarfism in Cats

ADVERTISEMENT

Osteochondrodysplasia and Achondroplasia in Cats

 

Osteochondrodysplasia is a growth and developmental abnormality of the bone and cartilage, which results in lack of normal bone growth and bone deformities. Where osteo refers to the bone, chondro refers to the cartilage, and dysplasia is a general term that is applied to abnormal growth. The Scottish fold breed has been found to be predisposed to osteochondrodysplasia of the limbs.

 

Achondroplasia is a form of osteochondrodysplasia in which the bones do not grow to the normal size, based on what is expected of the breed. This is caused by a mutation of the fibroblast growth factor receptor gene. The result is abnormally short limbs, a condition called dwarfism. In some breeds this trait is selectively encouraged, such as with the Munchkin breed.

 

These disorders are genetically acquired.

 

Symptoms and Types

 

  • Larger than normal head
  • Undershot jaw with shorter nose
  • Crooked teeth due to shorter jaw
  • Abnormal bone shape
  • Poor growth or lack of growth
  • Bones appear shorter than normal
  • Enlarged joints
  • Sideways bowing of forelimbs – front legs are more likely affected
  • Spinal deviation to either side of the body

 

Causes

 

Osteochondrodysplasia is an autosomal dominant genetic disorder, meaning that it can be passed along by either gender and only one parent need carry the gene for an offspring to be potentially affected.

 

Diagnosis

 

You will need to give your veterinarian a detailed medical history, including when you first noticed symptoms of growth abnormality, and any information you have about your cat's genetic background. Routine laboratory testing will include a complete blood count, biochemistry profile and urinalysis to rule out other causes for the disorder. X-rays of the affected limbs will be taken, which will show abnormalities related to bone growth and structure. X-rays of the spine will also show such abnormalities in patients with spinal deviation. To confirm a diagnosis, your veterinarian will take a sample of tissue from the small bones of the body and send it to a veterinary pathologist for further diagnostic testing.

 

 

 

Related Articles

Inflammation of Bone in Cats
Panosteitis refers to a painful condition that affects the cat's long leg bones and...
READ MORE
Degenerative Joint Disease in Cats
Osteoarthritis, also known as degenerative joint disease (DJD), is defined as the...
READ MORE
Bone Overgrowth in Cats
Though rare in cats, hypertrophic osteopathy can create extreme discomfort and pain...
READ MORE
  • Lifetime Credits:
  • Today's Credits:
Hurry Before All Seats are Taken!
Enroll
Be an A++ Pet Parent! Take fun & free courses to earn badges & certifications. Choose a course»

 

Around the Web
MORE FROM PETMD.COM