In Hansen Type II, the outer layer of the disc calcifies and protrudes outward, usually in the lower back area, resulting in a compressed spine.  This type is also referred to as Disc Protrusion (IVDP) and tends to occur at a later age in medium to larger dogs.  For this type the symptoms can vary significantly, depending on where the spine is compressed and the associated nerves.  In Zoey’s case, she can still wag her tail, but cannot use her back legs at all.

David Bartlett Park

In both types, presenting symptoms can be mild (crossed legs, odd gait, occasional incontinence) or extreme (pain, inability to walk, paralysis).   Based on the information we have, Zoey went from fine to paralyzed in less than 24 hours; however, the progression of the disease probably started earlier, with little to no symptoms.  

Zoey underwent surgery to correct the problem, but unfortunately, the procedure was not successful, and she now has only two functioning legs.  But you know, Zoey is a "glass half full" kinda gal.  It hasn't hurt her ability to love, be affectionate and enjoy the world.   Sure, her back legs don't work - but she still has two good legs, loving foster parents and a wheelchair - and she's ready to roll to her final home sweet home.   Next time you see her, be sure to say hi to this sweet girl.

Carol Anne Meehan of CTV News did a story on Zoey which is available for viewing at:

For more information on Zoey, or fostering opportunities, contact the following: (Zoey)

The Story Behind  .  .  .  Zoey!

Hansen Type 1, also known as Disc Extrusion (IVDE), is usually seen in certain breeds, such as the Dachshund, Corgi and Basset Hound, due to their long bodies and short legs.  This body type, known as chondrodystrophic, can cause pressure areas in the spine, usually in the center of the disc in the cervical, or neck region, which can burst (or herniate).  Type 1 usually presents by 3-4 years of age in these breeds.

Dog Walkers' Association

Spring, summer, winter, fall, you’ve seen Miss Zoey toolin’ around in her puppy-powered wheelchair.  She happily greets people and dogs, keen to make contact with everybody.  Friendly and sweet, her tail is constantly dancing.  Zoey is a pretty, 9 year old Catahoula who has been fostered by the Marcotte family since April, 2016 through Catahoula Rescue – Ontario.

In 2014, Zoey experienced an intervertebral disc herniation, or slipped disc, the most common cause of paralysis in dogs.  It is typically the result of Intervertebral Disk Disease (IVDD), a degenerative disorder that can be an issue for years before any symptoms appear.   

There are two types: 

Photograph by Dave Marcotte