You may be able to help me with something; this is strange. We are dealing with a cat who has this odd swelling on her right front wrist; she does not wish to put weight on it. Took her to the vet, X-rays show no bone damage; no breaks. When she took antibiotics swelling went down, but now it is back; antibiotics done. Am going to try febendazole. Had a cat who also had this, and had to be put to permanent sleep because of pneumonia. Have never seen this swelling on joints of paws ever fore in cats. Ideas? Thank you all!