Choosing a Dog Wheelchair for Back Legs: A Shih Tzu Owner's Guide

A straight answer first

A dog wheelchair for back legs Shih Tzu owners are shopping for is really just a sized frame that takes the weight off the back end so your dog can move around under his own power again.

The two things that matter most are a diagnosis from your vet and an accurate measurement. Everything else, including which size you need, follows from those.

Why a Shih Tzu's back end starts to go

Some hind leg weakness comes on gradually, as in one dog whose limb weakness had been slowly worsening over about two months before diagnosis.¹ Degenerative joint disease, also called osteoarthritis, which is wear and inflammation in the joints, is a major cause of chronic pain and reduced function in dogs.²

One Miniature Schnauzer's hind limb weakness and unsteadiness appeared suddenly and progressed within 24 hours to paraplegia, meaning complete loss of voluntary movement in both back legs.³

That difference matters for you today.

When to stop reading and call your vet

Go now, or to an emergency clinic if yours is closed.

The reason is simple. Some spinal problems, such as a disc in the mid to lower back bursting and pressing on the spinal cord, are treated with surgery that relieves that pressure, and the current literature supports this surgery even in dogs that are paralysed in the back legs and have lost the ability to feel pain there.⁴ In one study of such dogs, 77 of 127 (60.6%) were walking again at their recheck.⁴

A wheelchair is not a substitute for that visit. It supports mobility, nothing more.

In dogs with a different problem, a sudden loss of blood supply to the nerves and muscles of a limb, complete recovery happened in a subset of dogs that could not walk at first, showing recovery is possible even when the initial signs are severe.⁵

Some dogs recover. Some plateau. A cart covers either situation, because it gives your dog a way to get around while you and your vet work out which one you are in.

What a dog cart actually does for a small dog

The OldPal Rear Support Dog Wheelchair is a two wheeled frame that carries your dog's back half. The padded harness carries weight through the hips and chest rather than the spine, and every strap adjusts, which matters on a short bodied dog where an inch in the wrong place is the whole fit.

The frame is set so the back legs hang free or lightly brush the ground. If your Shih Tzu still has some use of his back legs, he can keep using them. If he does not, they are not being scraped along.

A few practical things owners ask about before anything else:

• Dogs can squat and go to the bathroom while in the chair.
• The frame is lightweight aluminum with all-terrain wheels, so grass, gravel and sidewalk are all fine.
• Each frame adjusts in height within its size range, so small changes in posture or muscle over time do not mean a new chair.

What a dog cart is not: a treatment. Use it for walks, yard time and moving around the house under supervision, and take it off for rest.

Getting the size right on a Shih Tzu

Small dogs are where guessing goes wrong, so we size on one measurement only: rear leg height, taken from the top of the hip straight down to the toe pad, with your dog lying on his side and the leg at its natural bend. Not standing. Not stretched out.

There are five sizes (Mini, Small, Medium, Large and XL) covering rear leg heights from 3 to 31 inches. Most Shih Tzus land at the smaller end of that range, but breed averages are not a measurement, and a chunky 18 pound Shih Tzu and a fine boned 10 pound Shih Tzu are not the same dog.

Take the measurement, then run it through the fit finder on the size guide. If your dog will not hold still, or you are between sizes, email a photo and your number to help@oldpalpets.com and a person will answer you.

If we get it wrong, the Fit Guarantee covers it: send the chair back and we replace it with the size that fits, and return shipping is the only cost to you. Most orders arrive within 2 to 3 weeks, and we ship to the continental US only.

Keep the rest of the plan going

A cart is one piece of the picture. Movement work under your vet's direction is another, and it is worth asking about.

A structured exercise program in dogs with degenerative joint disease was associated with measurable changes in joint motion and muscle size, and the authors support building targeted therapeutic exercise into wider conservative management.² In a separate study of lame dogs with hip dysplasia, a poorly fitting hip joint, doing whole-body vibration sessions three times a week, owners reported fewer signs of pain at weeks 12 and 16 compared with the start.⁶

Ask about muscle too. In a dog that had gone without rehab after knee surgery, the affected back leg showed lameness, intermittent limping and muscle wasting.⁷

One honest note on rehab claims: a review of five studies found no evidence that passive range of motion exercises, where you gently move the dog's joints for him, speed up recovery on their own after slipped disc surgery, and evidence on specific rehab techniques was weak overall.⁸ The suggestion from that data was a combined approach rather than one single technique.⁸ In plain English: there is no magic exercise, and a plan built with your vet beats anything copied from a video.

Frequently asked questions

Related guides

• How to measure your dog for a wheelchair, including the fit finder
• The OldPal Rear Support Dog Wheelchair
• Sizing help from a real person: help@oldpalpets.com

Sources