I probably should post this under an alter, as putting it on an internet BB means that the chances of someone reading it who now knows what my restrictions are compared to what I am actually doing go up dramatically 
I am ‘not suppose to’ : lift more than 10 lbs, do anything that makes the numbness in my legs or back worse, drive while on my medications (this one sounds worse than it really is - I DO know the effects of the meds I am currently on and I AM ok for the amount of driving I do), cause any jarring or excessive concussion to my back or hips, do anything that would increase the chance of a fall where my back may be injured again, bend over at the waist - always squat to reach anything on the floor/ground.
I got tired of living my life on the couch or in bed, however, and started riding again a little over three months ago. I did mention to my ortho surgeon that I wanted to try getting on my horse again, and he didn’t give me a flat out ‘NO’, but he also never asked exactly what type of riding I do or what I planned on trying to do. Didn’t mention it to my neurosurgeon, rheumatologist or GI doctor, as I know what their answers would have been (I picked the most understanding doctor to pose the question to).
We are only walking this planet for a relatively short time, and I’ve already spent a quarter of it missing out on the things I enjoy doing because of all of my surgeries and related issues - I realize I may be damaging things in the long run, but I am going to enjoy the time I have left. Of course I won’t knowingly put myself in a situation that could cause further damage, but I’m also not talking about jumping out of airplanes (yet :))