My whippet Rickie is limping on his right foreleg. This started about 3 weeks ago and has not stopped since. At the time this started he had a dental booked at a specialty clinic (I was expecting a fractured tooth to result in an extraction) I asked the orthopedic surgeon there to have a look at the leg.
They did a physical exam and xrayed from shoulder to toes. Nothing except a little arthritis (Rickie is 10) - recommended continuing with the Flexadin supplement and giving Metacam when needed.
That night a sebaceous cyst on his lower leg (about half way between the carpus and the toes) looked inflamed. I thought perhaps as a result of the examination.
Next morning, the entire area from the carpus to the toes was huge, and the cyst protruded from the swelling. I called, they said bring him back.
They did a needle aspirate of the cyst, examined the material and determined it contained bacteria. Sent a sample out for culture, and kept him overnight on IV antibiotics. Sent him home the next day with 3 weeks of Cephalexin, 375mg every 8h, and tramadol. The subsequent results of the culture did not suggest a change in antibiotic.
We are now 2 weeks into the antibiotics. The swelling is down, the limp has continued.
Two nights ago when I was examining the foot, I noticed a pin-sized yellow scab. Scraped it off, and a bit of what I assume is pus came out. Figured this was not a good thing, and expressed the rest, or what I hope was the rest, until only blood came out. As a result the immediate area is now a bit swollen again, but otherwise shows no sign of additional gunk.
It surprised me that this would happen 2 weeks into the antibiotics, but someone told me that if the infection had formed a pocket, antibiotics were not good at penetrating that. I will start applying warm compresses to see if it draws anything up. If the problem still exists when we go back for a recheck next week, the area may need to be lanced, flushed and drained.
Here is my question (finally): why is Rickie still limping? Even the holistic vet who examined him yesterday was surprised the infected cyst would cause a limp, and no one can find anything else wrong. They've even checked his pads under magnification, squeezed them for sensitivity, etc. Nada.
My concern is that somehow we are missing something. Or, perhaps it really is the cyst?
If anyone has any thoughts on this, I would greatly appreciate them. Sorry this is so long.
ETA: The limp has never stopped, i.e., expressing the cyst 2 days ago did not cause the limp to return - it has been unchanged since the start.