
Hi There,
>Our vet recommended a boot as he was dragging his nails and was beginning to get down to the quick and bleeding.
I know, bless you, it's a catch 22 situation; we try to keep them as comfortable as possible and I fully understand it's difficult.
>Jack seems to have deteriorated so quickly - from a week ago where he was just dragging it a little now where he is tripping up over himself, falling over and generally sliding everywhere.
That is mighty quick for DM IMO, and it appears to be in 1 hind leg? Did your vet do the neurological tests on both? Did he try manoeuvring your boys head to flex the spine? Not all vets do this; I went to 4 with a suspect spinal injury/disease and none of them did it. That said, not all spinal probs manifest themselves on manual manipulation of the spine.
If there no evidence to diagnoise DM, I'd consider cage rest in case there is a disc problem in the spine. If the disc or associated vertebrae are putting pressure on the cord, exercise can exacerbate the problem. So if there is a suspect spinal problem putting pressure on the cord, do NOT do Hydro unless you know what it is and your vet is happy with it.
There are so many illnesses that can mask DM, treatable illnesses for example and your boy is young at 8 yrs old for a GSD. Mine had just entered adulthood at that age and was still daft at 12.
Our vet said our boy had DM too when he was 10 yrs old, we insisted on a referral and he had an MRI and it turned out to be a disc protrusion. He had an op and made a terrific recovery. It gave him 3 good years until he passed away with something completely unrelated.
I'm not knocking your vet or mine even, but there is a tendency to associate the GSD and neurological deficits in the hind quarters with DM when there is no evidence to suggest otherwise. Whatever you decide, I wish you the very best for your boy.