iN ADDITION TO PREVIOUS POSTS (oops sorry re caps) test all accessory motions in the pelvis up to T-12 and hip knee foot and ankle and restore those that are restricted. Be thorough such as Hesch Method protocol and only then evaluate for orthotics. Onc cannot adequately stretch soft tissue if it is reflexively responding to another "input" and the same is true if there is a significant biomechanical restriction i.e. posterior ilium, Type 1 or Type 2 inflare/outflare of pelvis, etc.
jerry hesch