thoracic spine, level 9 pain

[physiobob]

Sounds like you've answered it yourself. To much Tx kyphosis with a corresponding Lx lordosis to match. If the spinous processes are prominent then it is easy enough to have them become hypersensitive. Wearing a back pack is not likely to help your situation. I would work on getting mobility in your toracic spine both in extension and rotation with similar adjustment to your Lx. You might find some simple kinesiotaping to assist postural awareness might help to take the End of Range load on the apex of your Tx kyphosis. Adjusting your pelvic position won't help if the rest of the spine doesn't have the mobility to happily accept the altered posture. Tight pecs, rib cage etc need to be eased out while strengthening Tx extension and rotation musculature.

Remember the body does not like to rest at an end of range position. So to achieve an erect spine you need to be able to move well beyond that into Tx extension such that what you want at rest it not the end of range that is possible.