Unfortunately, humps in the back appear when the osetocysts (the cells that make up the bones) decay and collapse on one another. So, a hunched back is more the results of bones than anything else. However, I think that it could be good for your spine nonetheless to try inversion to create space between the vertebrae. Combined with some shoulder strengthening exercises, you can try to stretch the chronically tight muscles of your neck and shoulders with an inversion machine.

Do you have a physical therapist nearby whom you can consult?

Thank you for your reply. And yes, there are physical therapists in town. I'll check into this further.

Super. I'd suggest that you consult a PT and perhaps even a Pilates or yoga instructor about spinal alignment. Please let us know how it goes!