ITB bands are notoriously difficult to "stretch" and anyone undergoing femur lengthening needs to consider a proper ITB release. Medical research firmly supports this, and will be presented here. If you are spending tens of thousands of dollars lengthening your Femur, move mountains to convince your surgeon to give you a proper ITB release. This is not medical advice, but purely informational/entertainment you should verify with your own doctor.
Read this:
https://uesca.com/it-band-syndrome-myths-and-facts/"Let’s first address stretching. The ITB is a very tough structure. In fact, in a 2010 study by Falvey et al., a strain gauge was used to test various stretches on the ITB and the result was that the ITB was unaffected.
Therefore, it is highly unlikely that stretching will have any effect on the ‘tightness’ of the ITB."
I highly recommend reading this:
https://www.painscience.com/articles/iliotibial-band-syndrome-stretch.php"Even if you do everything right, even if you perform the ideal stretch and manage to pull firmly on your IT band for a couple minutes — which is longer than most people ever bother — how much would you actually change the length of your IT band? How far would it move?
Roughly 2 millimeters — an overall change in length of less than half a percent.
You still won’t actually change its length, any more than you can make a leather belt longer by pulling on it. This is the most important thing IT band stretchers need to understand."
And also this:
https://thedoctorsofpt.com/it-band-pain-myth-v-reality/#:~:text=Myth%202%3A%20The%20ITB%20can,to%20actually%20induce%20a%20stretch.
"Myth 2: The ITB can and should be stretched
Since the ITB is made up of fascia, which is different from a muscle, it’s nearly impossible to stretch it. It would take way more force than we’re capable of producing on our own, to actually induce a stretch. This is a good thing – since the roles of the ITB are to stabilize the side of the knee and provide energy storage and release during running, we don’t really want it to be stretchy anyway. "