How Racing Your Puppy Downstairs Destroys Growth Plates and Causes Early Hip Dysplasia

Zack Keithy, our author, is a certified veterinarian technician (UC Blue Ash) for over 6 years (contact him here). The articles written here are based on his expertise and experience, combined with a review by our expert vet reviewers including Dr M. Tarantino. Learn more about us here.

If you let your puppy “race” you down the stairs or fly off the bottom step, you are gambling with their skeletal future. Here is why the high-impact “stair-shock” is permanently damaging your puppy’s growth plates before their first birthday and the “Carry Strategy” you need to follow…

At Canine Care Central, we know how exciting it is to watch a puppy discover their own speed. However, a puppy’s skeleton is not a solid bone structure—it is a series of soft, cartilaginous “Growth Plates.”

These plates are the flexible areas at the ends of long bones where new bone is created. Until these plates “close” (usually between 12 and 18 months), they are incredibly fragile.

Forcing a puppy to navigate stairs—especially descending them at high speeds—subjects these soft plates to shear forces they were never meant to handle.

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The “Shear Force” Crisis: What Happens on the Way Down

While climbing stairs builds muscle, descending stairs is purely high-impact.

1. The Growth Plate “Slide”

When a puppy runs downstairs, their front shoulders take 70% of the impact. Because the growth plates aren’t yet hardened into solid bone, this “stair-shock” can cause the plates to shift or fracture. This leads to angular limb deformities where the legs grow crooked or “bowed.”

2. Early-Onset Hip Dysplasia

For large breeds like Labs, Goldens, and Shepherds, the jarring motion of stairs can “loosen” the hip socket before it has fully formed. Studies show that puppies allowed to use stairs before 3 months of age have a significantly higher risk of developing hip dysplasia later in life.

3. Micro-Trauma and Arthritis

Every “thud” at the bottom of a step causes micro-trauma to the joints. You won’t see the damage today, but this is exactly how “Senior Arthritis” begins. By preventing the impact now, you are adding years of pain-free mobility to your dog’s life.

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The “Puppy Stair Protocol” for Every Breed

You don’t have to live in a ranch-style house, but you do need to manage the “Stair-Load.”

• The “Under 12 Weeks” Rule: Carry your puppy up and down ALL stairs. Their skeleton is too soft for any repetitive impact.
• The “Managed Descent” (3-6 Months): If the puppy must use stairs, they should be on a leash. Do not let them “bunny hop” or race. Guide them one slow step at a time to ensure they are using their muscles, not their joints, to stabilize.
• The “Ramp” Alternative: If you have back deck stairs, consider a temporary ramp. Ramps eliminate the “drop” impact and are the safest way for a developing dog to move between levels.

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Frequently Asked Questions

When do growth plates finally close?

It varies by size. Small breeds are usually solid by 10–12 months. Giant breeds (like Great Danes) may not have “closed” growth plates until they are 2 years old. Consult your vet for an X-ray if you aren’t sure.

Is jumping off the couch just as bad?

Yes. Flying off a couch onto a hardwood floor is arguably worse than stairs. Use “Puppy Stairs” (which are actually ramps) or lifting to prevent the high-impact landings that “crunch” the growth plates.

My puppy already uses stairs; is it too late?

It’s never too late to stop the damage. Switch to carrying or leashed walking immediately. The body has a remarkable ability to heal micro-trauma once the repetitive impact is removed.

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Wrap Up

Your puppy’s joints are a “limited resource.” By protecting those fragile growth plates during the first year, you are ensuring a lifetime of running and jumping when they are actually strong enough to handle it. Don’t let a “race” to the bottom ruin their future!