X-rays

[fidleyspromise]

Tia had some x-rays done as she's gotten a little uncomfortable sitting in the car.
While there is arthritis which we suspected, the length difference from left to right was the biggest shock - 2 inches.

 

[CorvusCorax]

I'm sorry but the hip x-ray positioning looks terrible. I'd get them re-done.

 

[FinnishLapphund]

I can understand that it was a bit shocking to see such a length difference on the X-rays. I don't know if it's caused by a poor positioning of her body, or that's how her skeleton is actually built, but in either case, if she have arthritis, there's lots of options you can try which might help her.

Besides veterinary prescribed drugs, there's supplements with glucosamine + green lipped mussel, and/or glucosamine combined with other stuff, which might help.
I've had very, very good result with acupuncture on both some bitches, and a cat through the years (due to various skeletal problems caused mostly by wear, and tear, and old bodies deciding to grow a little bit extra bone were it wasn't needed, but one of my late bitches had one bone inside one of her back legs that grew a little bit longer than the other bones when she was a puppy).

Then there's swimming exercise, or maybe some other type of hydrotherapy, like one of those treadmills with water. If you can strengthen her muscles, or at least retain the muscle mass she currently have, that might make a difference.
Maybe look into if you could do a bit of massaging, and/or stretching on her yourself.
Laser therapy is said to help some dogs with arthritis.
Orthopedic dog beds, or at least some other type of dog mattress/bed might help.
Shiatsu for dogs?
Not sure if surgery is an option, but hopefully it's just a matter about finding out what type of help that works best for her, and you.

Is there anyway you could retrain her to not sit up while travelling in the car? If she's a small to medium dog, could you perhaps get her a raised/elevated car seat so she might still be able to see out but while laying down? I wouldn't want a dog of mine sitting loose in one of those seats, so it would need to be possible to attach a car harness to something for me to be okay with using one.
As long as there's no extra danger from an air bag if the dog sits in the front passenger seat, I'm guessing it's not much more dangerous to sit/lay in one of those wearing a car harness, than sitting directly on the seat wearing a car harness. But maybe I'm wrong. On the other hand, what is most likely to happen, that the arthritis causes her problem after sitting up during a car ride, or that you + car gets in to an accident?

There's lots of options these days, here's just two examples I found by a quick Google search:

 

[fidleyspromise]

Thank you both. First time I've had xrays done.

The vet advised her skeleton/pelvis is deformed. (I can't remember the exact wording).

She goes to hydrotherapy fortnightly, has an orthopedic bed, she's just started getting massage and is going again tomorrow.
I will look at acupuncture.

She sits in the car and always has done. When she's tired she lies down. She has a harness and is on the back seat as the boot is small. (She's a GSD).

 

[skinnydipper]

Does she have adequate pain relief?

Pain control will help her to continue to use all her limbs appropriately, which will help to maintain muscle mass.

 

[fidleyspromise]

She has loxicom - she still jumps on the bed and sofa.