Dog knuckling or walking on the tops of the paws
Knuckling means a paw folds under so the dog lands or bears weight on the top of the foot instead of the pads. It can happen when the nervous system is not sensing or controlling paw position normally. IVDD is one possible cause, but knuckling is a sign rather than a diagnosis.
What owners may notice
- The paw folds under and is not corrected straight away.
- The tops of the nails or paw scrape along the floor.
- Your dog stumbles, crosses the legs or places a foot inaccurately.
- One paw is affected at first, or several limbs become abnormal.
- Scuff marks or skin irritation develop because the paw is contacting the ground abnormally.
Why does knuckling happen?
Dogs normally use sensory information from the limbs to know where each paw is and to place it correctly. Vets may call this proprioception or paw-position awareness. If the spinal cord, nerves or other parts of the nervous system are affected, that positioning response can become slow or abnormal.
IVDD can cause knuckling when disc material injures or compresses the spinal cord, but other spinal cord disease, peripheral nerve problems, trauma and some orthopaedic problems can also alter paw placement. The examination is used to work out where the problem is most likely to be before deciding whether imaging or referral is needed.
Knuckling, dragging and wobbling are not exactly the same
Knuckling
The paw folds under or lands on its upper surface.
Dragging
The paw or whole limb trails rather than completing a normal step.
Wobbling
The dog is still stepping but looks unsteady, sways or places the feet inaccurately.
Unable to walk
The dog can no longer take supported steps or remain standing normally.
What should I do until my dog is assessed?
Keep movement controlled and avoid stairs, jumping, running and repeated walking tests. Do not pinch toes or perform painful neurological tests at home. If you need to move your dog, support them carefully and ask the veterinary team for transport advice if they are very painful or cannot walk.
Protecting the paw is not the same as treating the cause
After veterinary assessment, a boot, sock or other paw protection may sometimes help reduce abrasion. It does not correct the neurological problem itself, and poorly fitted protection can rub, slip or hide worsening skin damage. Check the paw regularly and follow the rehabilitation or veterinary team’s advice.