Ask a Dog Vet and Get Answers to Your Dog Veterinary Questions
Welcome and thanks for asking your question. My name is***** am a licensed veterinarian. I am happy to answer your question today. First I need to ask you a few questions so that I can be well informed and give you the best advice. There may be a slight delay between your follow ups and my replies as I type out a thorough reply for you.
1- Weak on the left hind leg, correct?
2- How long has this been going on?
3- Did the symptoms come on quickly?
4- Did your vet start him on any medications? If so, what is the name (s)?
Friend, they symptoms and history you are describing are consistent with a neurological disorder. You see, when there is no evidence of any abnormality in plain xrays or blood work and the patient is showing motor dysfunction (knuckling over), this a nerve impairment problem. There are many possible causes; given the quick onset this could be related to: ***** ***** disc that is placing pressure on the spinal cord, thromboembolic (stroke like), neoplasia of the central nervous system, etc. to name a few causes. For a definitive diagnosis he would need advance imaging like an MRI or CTScan. Plain xrays are great and often tell us all that we need to know. But, they do a poor job when evaluating lesions affecting the central nervous system. For this reason, I would strongly recommend having him checked by a neurologist as your family vet has recommended. Depending on the underlying cause will depend on the treatment options.
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