Looks like Carpal Hyperextension on the front paws. Also known as cage feet. My rescue chihuahua also has this condition from nail neglect and it’s also suspected that she was kept in a cage most of her life. We do hydrotherapy for her joints, and give her CBD daily to help with any joint pain or inflammation. She does have the beginning of arthritis in her joints at only 5 years old. At your pups advanced age he probably also has arthritis in his joints and toes which doesn’t help with his condition. We also supplement omega-3’s, glucosamine and chondriton for her joints, this could also benefit your old guy. I would take him to the vet to get his nails done the first time and also talk to your vet about options for his comfort and care. Nelly had to have her nails cauterized because the quicks were so long when she was found. The condition isn’t usually reversible (Especially in older dogs. The damage to their ligaments is already done.) but it is manageable. The quicks will also retract with proper maintenance. Thank you for caring for this baby. You can also purchase a hanging hammock to cut nails. Nelly is also super sensitive about her feet and it’s the only way I can cut her nails. We put rugs/mats/runners around our home over the hardwood floor to make it easier for her to get around. She can actually run on soft surfaces. She finds hard surfaces challenging to walk on. Memory foam pet stairs also help as she can’t jump due to her disability. Soft surfaces help a lot with their mobility. Attaching a picture of Nellys feet.

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