I'm told adhesion and aggressive scar tissue are terms that are used interchangeably. And yes, I agree, it feels like a tight band is wrapped around inside your leg. I envisioned it all being scar tissue, but I'm being told it isn't. The scar tissue is up near the scar. I guess it somehow tugs on other parts so that it makes it feel like tight netting pulling on your calf and thigh, too. About a month ago, that feeling left my thigh. It still affects my calf.
With older kids you tend to be up front with a lecture format more often. This is likely a bit overboard, but you might want to think of bringing in a raised platform that you could put a lazy boy on. I found I was standing, trying to write on the board, pull down maps/screens and the like which all meant standing on your feet more than your leg may like, especially with your limited range of motion. Do you use a walker, cane, crutches? It seems as though you must still need something. Can you drive? Is there anyone that can drive you? I couldn't drive until I reached 90 and even then it would hurt if I went far so I self-imposed a 10 mile radius from my home.
Hope this helps you think through some of the issues you may face. I also it hopes it doesn't depress you. I'm glad you can count on lovely students. That will go a long way to easing potentially rough issues.
Happy Easter!