I don't have a scar to accommodate, but I find the waistband of the Gore Oxygen shorts to be very comfortable, not at all tight or irritating.
You might want to look at bib shorts. Another possibility would be to call TE and ask for their recommendation. Unfortunately they're low on inventory right now as they prepare for a warehouse move, but if they have anything good in your size you can probably get it on sale.
It's great that you're back to being able to exercise. I hope things are going well.
- Gray 2010 carbon WSD road bike, Rivet Independence saddle
- Red hardtail 26" aluminum mountain bike, Bontrager Evoke WSD saddle
- Royal blue 2018 aluminum gravel bike, Rivet Pearl saddle
Gone but not forgotten:
- Silver 2003 aluminum road bike
- Two awesome worn out Juliana saddles