I had this IUD for a few months. A couple of weeks after I had it inserted, my hips started popping. I'm not talking about a little pop, either. Every time I rolled over at night, there would be a series of loud pops, and sometimes, they were loud enough to wake up my husband. After a couple of weeks of just noise, my hip joints started to hurt. Nobody could figure out why, and when I said that it started just a couple of weeks after I got the IUD, they told me it wasn't related. I finally had the IUD taken out, and within a couple of weeks, everything went back to normal.
It may not cause you any problems. However, I did some research prior to posting this message, and it appears that I am not alone in having problems with joint pain. Other women have reported problems, too, so make sure you do your research before making a decision. (Google is a wonderful thing!) Believe me, having an IUD is a great thing for those of us who hate taking the pill or using condoms, but there are side effects that you have to look at, too.
Good luck!
Mom of nine, ages 22 to 2, six boys, three girls.