What's causing my senior German Shepherd's sudden leg weakness?

It sounds like Damian may have cauda equina syndrome. It could be arthritis in the hips but I think cauda equina is more likely. This is an extremely common problem in German Shepherds. Here is a link to an article about this problem: https://bluepearlvet.com/medical-articles/cauda-equina-syndrome/ I suggest you bring this up to your vet or get a second opinion from another vet. Hope this helps. Best wishes.

This sign as you described it seems to be compatible with a neurological problem, most likely affecting the spinal cord at the thoracolumbar level. Intervertebral disc extrusion, spinal cord infarct and spinal cord tumor are all possible differentials and immediate check up and neurological examination should be performed as soon as possible to be able to confirm these clinical suspicions and treat appropriately. Further investigations like x rays may be immediately needed. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

The main two conditions that will cause this is arthritis or a degeneration of the nerves. Your best option is to have Bruno examined by the veterinarian. He may need an x-ray to look at the bones. Here are some helpful links about both conditions: https://www.petcoach.co/article/causes-and-management-of-arthritis-other-joint-diseases-in/ https://www.petcoach.co/article/arthritis-in-dogs-101-what-you-should-know/ https://vcahospitals.com/know-your-pet/degenerative-myelopathy-in-dogs Once your vet knows the cause, discuss what treatment options are available. I hope this helps.

It sounds like what you are describing is weakness. Did your pup have a neurologic exam? What we look for is evidence of pain (although this can sometimes be inconsistent in pets), loss of sensation to the feet (does he fail to flip his foot back over when the top of his foot is placed down?), and presence or absence of reflexes. The results of these tests can help to determine if it's neurologic in origin and what portion of the spinal cord may be affected. Although, it can sometimes be hard to differentiate orthopedic from neurologic disease. Plain xrays of the spine are helpful to rule out any bony abnormalities, and sometimes we can see evidence of narrow disc spaces, but ultimately we cannot see the spinal cord, nerves leaving the spinal cord, or the soft tissues. If a neurologic problem is suspected an MRI is often needed. But, there are also some other conditions that can cause weakness that are metabolic in origin (has your guy had any senior lab work recently?) or related to loss of signaling to the muscles (for example a disease called myasthenia gravis) or related to a degenerative process such as degenerative myelopathy. If there is a component of pain detected on exam then anti-inflammatory pain medication may help. If you feel like things are getting worse it would be a good time to have a re-evaluation with your family vet. Another option as well, if a neurologic process is suspected, would be to have a consult with a veterinary neurologist. I hope this helps and thank you for using Petco Pet Education Center, formerly Petcoach!

In an older GSD losing ability to control hindlims, I would be concerned about degenerative diseases of the spinal cord (degenerative myelopathy-DM), spinal cord tumors, or less likely a fungal infection such as aspergillosis. Bluebelle needs to be evaluated by a veterinarian as soon as possible. Following examination, discuss testing for DM and imaging of her spinal cord (MRI)x

I am very sorry that Manny is having a hard time after his birthday celebrations. It sounds to me for what you are describing there could potentially be an osteoarthritis component to his issues. It is possible that he has muscle weakness, thought as you are noting, it is less likely to appear so quickly. Whereas, osteoarthritis flare-ups can appear immediately following a walk. I would advise the following for you and Manny; Shorter walks more frequently to prevent flare-ups and build up lean muscle mass Cool compresses after a walk on his hips for a few minutes every few hours for the first 24 hours After first 24 hours, switch to warm compresses Adding a joint supplement to Manny's diet such as this one; http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=29218 If he does not return to himself within 48 hours, and really start to improve in the first 24 hours, I would advise taking him into his veterinarian to ensure he doesn't need any changes to his medication, or perhaps adding a long term medication for osteoarthritis.

At this age dogs usually suffer from painful arthritis of the hips. The pain makes them use their hind legs less and therefore the muscles atrophy. You should take Ryder to your vet for an exam, and mention the weakness in the hind legs. Your vet can prescribe non-steroidal anti-inflammatory medication which will help with pain and should make Ryder more happy to get up and exercise. This will train his leg muscles and it will be much easier for him to get up and walk.