I'm concerned for my dog?

I have an almost three year old female border collie. She is the best dog I have ever had! Unfortunately when she was a small puppy she was hit by a car and had to have a screw put in her hip so that she could walk normally. Now that was a long time ago and she's perfectly fine now (running jumping doing agility and all that good stuff) but the neighbors put up an electric, barbwire cattle fence yesterday to contain their labrador (i know, a bit much for a 45 lb dog). My huskies hopped back and forth through it yesterday and only one of them let out a little whine when coming back through, they acted as if it didn't bother them. Now my border collie (whos pain tolerance is indescribable, she didnt whine when she was hit by the car I'm told, and she got bit by a dog and didn't whine. And anytime my huge (16 lb) cat attacks her for getting too nosy she doesn't whine either) went through there this morning and she flipped out!! she didn't stop screaming for near a minute and she kept looking at her rear. My father told me that it's because she has the screw that it effected her that badly. If this is the case, I am getting an electric dog fence to reenforce my already 5 ft high wooden fence that the huskies climb with ease. I was considering getting her a collar too but if it's going to hurt her because she has metal in her hip then I don't want to do that. Is my father right? or was she just acting that way because she has never felt electricity before?