My dog fell, can't use leg. X-rays clear. Is high rheumatoid factor from trauma?

Question

Hello. 10 days ago my dog fell down from the stairs, and since then she can't step on her right back leg. X-ray was good, no bones are broke. After making a blood test we find out that her rheumatoid factor is 24. There is no swelling in her joints and before she fell she was very active and walk a lot. Can so high rheumatoid factor be a result of her trauma when she fell down? And what is the cure. She still walks on her three legs. Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 9 years and 9 months old | 22 lbs

Laura Johnson VMD · Accepted Answer

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Dolly is precious! I don't think the elevated rheumatoid factor is from the fall. It doesn't usually increase suddenly. It is not a perfect test and has false positives. Regardless it doesn't fit her history at all. Just be sure that the Vet evaluated her knee well, they may need to sedate her. Even though her X-rays were normal she could have torn a ligament in her knee. Cruciate tears are the most common injury in the back leg of dogs. Also little dogs can have luxating patellas. Rheumatoid arthritis is usually treated with immunosuppressants, like prednisone. I hope this helps and I wish Dolly the best!

My dog fell, can't use leg. X-rays clear. Is high rheumatoid factor from trauma?

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