Now, granted, you can stretch it. Research has shown that you can stretch the Illiotibial Band ... wait for it - 2mm.
For illustrative purposes, 2mm is about this long: ...
But if stretching your Illiotibial Band ... doesn't help, you can always pummel tractor tire rubber with a styrofoam cylinder.
And if that doesn't work, as part of the global sort of approach that the great unwashed like myself are not sophisticated enough to appreciate, you can always use the equally scientific approach of blood-letting.