A few weeks ago I posted a thread about the knee injury our cat Stormy suffered, and the surgery that was required to try and repair it. http://boards.straightdope.com/sdmb/showthread.php?t=408574
Well, Stormy had her two-week follow-up appointment on Friday, and the news wasn’t good. When the vet took her out of the carrier, it was obvious that the knee was swollen, and the foot was pointed at a strange angle. Feeling the joint, the vet said that he could feel something there, and feared that part of the repair (which did involve inserting screws into the bones) had come loose.
They sedated her, took X-rays, and sure enough the screw that had been inserted horizontally through the top of the tibia had come loose. I suspect that it probably happened the one morning shortly after the surgery when she made a bolt for freedom and escaped from her cage.
They could go back in and repeat the surgery, this time with a larger screw (2.7 mm versus the current 2.0 mm), but the vet expressed doubts that a larger screw would hold any better than the one that came lose. Plus, Stormy’s not a large cat, and when you insert larger screws you run the risk of compromising the structural integrity of the bone itself.
So it seems that the only option at this time (other than putting the poor girl to sleep, which neither of us is ready to do), is to amputate the leg. She’s scheduled for surgery on Wednesday, which just happens to be my wife’s birthday as well. What fun!
On the positive side, the vet says that cats recover from this sort of surgery much faster than the knee reconstruction, and there are far fewer risks of complication. A very small (< 1%) of cats suffer from ‘phantom pain’ syndrome, but even if that occurs it can be treated with medication.
Still, it’s hard to look at her sitting in the cage knowing what’s going to happen. We both feel incredibly guilty - my wife more so than me, since she was out of town when the original injury occured.