I have ITBS and FAIS, and degenerative disc disease. I am an athlete, lifting heavy weights and engaging in Taekwondo. I have had PT for this last year. My question is, I haven t been able to lean back when kneeling. In other words, I haven t been able to tuck my legs underneath me and sit back. Is this due to the ITBS or FAIS? And if it is or isn t, how can I regain flexibility in that area. I can easily do complete front splits, and am flexible in every range, but not bending my legs back.