Are there differences in the way female cats are fixed?

Spaying (ovariohysterectomy) means that the cat's ovaries and uterus are removed. There are two techniques for performing the surgery. In North America, vets typically make an incision in the cat's abdomen to perform the ovariohyserectomy. In the UK and Europe, vets tend to perform what is known as a "left lateral flank spay" which involves making a small incision through the lateral abdominal wall of the cat. Basically, this technique involves going through the side of the animal as opposed to the animal's stomach area. Vets in Europe have found this that this procedure is more cost effective, time efficient, and safe for the cats. (Originally, this technique was developed for use on feral cats, who were going to be released into the wild within 48 hours of having the surgery.)

A less popular alternative to spaying is a procedure called "tubal ligation". This makes the female sterile, but does not prevent her from coming into heat and attracting males.

Differences from what? They're different from how male cats are "fixed," but all female cats are spayed the same way--removing the uterus and ovaries.

Female spaying is removal of the ovaries and uterus, and they are all spayed the same way unless there are medical restrictions, is this what you were asking?

Your question is vague do you mean between male and female?

Female spaying is removal of the ovaries and uterus

Male their balls get removed.