I don't know your particular field, but I was able to complete my Masters in the online environment from a really good school after my fusion. I actually herniated my back in class because I was attending as a hybrid student (in class/online combination). I did have to go to a site to take the comprehensive exam (well......twice I will admit), but I did get the degree with a 4.0. I can't use it now, but it did feel good to finish what I started.
If you (or anyone else) is considering online education now, please check really closely on the school you plan to attend. There are many federal investigations going on and several schools are having to close because of illegal or unethical issues. I am still trying to get a particular online school to withdraw my husband after we enrolled him. He attended one week of courses and we had to withdraw because it turned out they lied about everything from costs, to class requirements, to credit transferability, and even the VA benefits he was receiving. It's been a nightmare to get him out, but I think I lack some small amount of money for NOTHING and then he will be let go. They didn't like it when the VA started checking on what they had done. After we insisted they notify the VA and provide verification, they refused to return contact at all on any issue.
I hope you will be able to find the right fit for your education. It sounds like you really want to go back and finish.
All my best!
Failed fusion L5-S1, Pituatary damage, HGH Def, Fibro, Bladder surgery failure, Nissen Failure, GERD, OCPD, GAD, MDD, CTS (Bilateral Surgery completed), CFS, TMJ, Migraines, Vit D, A, Magnesium deficiency, Pre-glaucomic (sp?), HBP, Idiopatic Reactive Hypoglycemia, Edema, too many Drug/Food allergies, sensitivites, and current meds to list.