I have been using the PSB ankle brace for a number of years, and I love it. However, lately, it has been causing me extreme pain on the side where the hard plastic part wraps under the foot. It was driving me crazy because it was just the one foot.
Well, it turns out that the stitching holding the plastic piece in place has been compromised, and the plastic part was sliding under my foot, getting worse the longer I wore it.
So, if you have one of these braces, you may want to check the stitching and make sure it doesn't need to be resewn.
I had the same problem! Definitely a weak spot in the brace.