Therapeutic ultrasound or neuromuscular electrical stimulation for dog with arthritis?

My dog has arthritis and her vet said that she should get the ultrasound and NES.
I am reading very mixed reviews and cant see where people have had success with it.

She is taking Tramadol every two days one 50mg tablet. and fish oil 4000mg, glucosamine, and sometimes a steroid (medrol 2.5 mg)
The vet gave her glucosamine shots (1 week every day, then every 7 days and then 2 weeks and so forth)
In addition he has given her a shot for pain (cant remember the name) which works, (she can then walk and does not have weak hind legs)

I also give her baths in warm water to relax her muscles, heating pad (the ones you put in the microwave and is moist)

She eats very well.

Please NO rude comments or rude opinions.

Please answer my question…no snide remarks. My 5 year old dachshund mix has back issues occasionally. It is not a terrible condition yet, it just flares up once in a while. She is having a flare up right now. Ive read that glucosamine tablets have helped with back problems (i know it is for joint/hip health…but i think it could only help her back.)http://www.petco.com/product/106986/Cosequin-Bonelets-Hip-and-Joint-Support-Dog-Supplement.aspx?CoreCat=LN_Shopping_DogSupplies_HipandJointSupport I just want to keep her from getting worse and keep her comfortable during a flare up.
Also…what is your view on doggy asprin? Is this a good way to go to help with pain occasionally?
http://www.petsmart.com/product/index.jsp?productId=2751695

I will take her to the vet if it worsens, of course!….she can still run and play everyday, its just occasionally she gets a flare up in her back. Just please answer what I asked, not just telling me i should take her to a vet immediately.
The reason im reluctant to go to my vet at first sign of trouble, is because the owner of the vet hospital always treats us like we are bad people. My dog has a skin condition–chronic. Yet, she always thinks that we don’t care for our dog properly and makes rude comments. Our vet, in the same office, is remarkable. He is great with our dogs. So, that is why I put up with the rude owner—i will never switch vets. I just try not to go in for everything because she thinks we are not caring for our dog properly—which we are, the dogs skin condition is chronic with no chance of cure (trust me, we’ve tried everything)
Zgzig….my dog has dimodex. When I found her she was abandoned and covered in horrid scabs. I got her healthy. She is on Ivermectin 1% daily. The vet said she had a possibility of being cured in a year….it’s been 5 years and if I take her off the meds she starts getting scabby again and begins losing her hair. If she stays on her meds she is just fine.
Ive tried medicated shampoos and all kinds of supplements. She is currently on Dinovite daily…but the medication is whats keeping her skin under control