We routinely rent therapeutic lasers to our clients so that they can perform the therapies at home. We have found that it is an excellent adjunct to acupuncture but should be performed daily or as close to daily as possible since laser therapy has a cumulative therapeutic effect.
You may also want to find a veterinarian with a therapy laser or cold laser to help pain and swelling at the LS area. This can be used along or combined with the options Dr. Cheng mentioned.
Sorry about your dog!
Acupuncture and Chinese herbs should be able to help for the pain and stiffness regardless of the cause, but it may require ten or more acupuncture treatments to assess effectiveness. Electro-acupuncture may also be required.
If the deficits are strictly neurological such as in the case of degenerative myelopathy, spinal tumor, synovial cell tumor, or partial blockage or compression of the spinal cord by disk disease, calcification, etc, acupuncture can take much longer, must be performed more frequently and, has varying effectiveness depending on the cause and severity of the disease. Acupuncture can usually help to slow the progression of disease in the case of degenerative myelopathy. Did your neurologist offer an MRI or CT scan? These tests could give more information about the medical state of the spinal cord, than can be assessed by X-Rays. However, these tests are very expensive, require anesthesia, and would not be helpful unless the problem could be effectively treated surgically, which may not be possible for your dog.
Research has shown that acupuncture in combination with steroids has been shown to be as effective as spinal surgery. Steroids would not be contradicted in a dog with elevated kidney enzymes and might be worth a try, under your veterinarian's supervision.
There are a number of Chinese herbal formulas for IVDD, Degenerative Myelopathy, kidney disease, and spinal pain which would certainly be worth a try. Herbal formula's act as "herbal" acupuncture and can be important adjuncts to needle acupuncture.
If your veterinary acupuncturist is not familiar with Chinese herbal formula's I would be happy to offer help. Have your acupuncturist email or call my office if you would like.