Mr Rockin , any lateral thigh pain not directly caused by local trauma ( abrasions/contusions/ fractures/surgery ) will almost certainly be the common garden variety referred pain , from L4. Further attention to biomechanical contribution from the foot/ankle ( pronation ) will be of some value, particularly where Wikipedia reference-linkSIJ dysfunction has not been addressed. I fail to see however , how attention to the rest on your list could be of any concern or relevance. Long term pain freedom is usually able to be gained with successfully restoring normal mobility to L4 . I have not personally found the need to explore the prospect of biomechanical advantage/disadvantage by attention to hips, knees or pelvises in other ways.