Hi I fractured my L1/L2 many years ago (1986) back then though medical treatment and ongoing physio was non existent. After a long operation, a week in intensive care, 8 weeks bed rest and then rehab which in total was 3 months, I was still not walking unaided, once I was kicked out of hospital there was no ongoing physio and it took me 2 years to walk unaided.
they never told me I shouldn’t or couldn’t get back on a horse and it took a while only because I was a young single mum of a 1 year old so just general survival was foremost at the time.
To give you an idea of my disability.
The bits of bone in my spinal cord damaged the cord and I have partial paralysis still to about 40-50% below the waist, this is unevenly distributed over both sides. I have hammer toes on my left leg, my left leg had started to contract so that I would ride shorter on my left and I am unable to move my right ankle at all. I have no use in my seat muscles,so no padding on my bottom and no muscles or feeling on the balls of my feet either protecting my feet from impact etc. I can walk (with a limp and plenty of pain), I can’t run or jump and I have to mount across or down onto my pony, not up as I my legs are not strong enough to lift me up and I can’t lift my leg up over my horse properly while I mount.
I can’t give even leg aides due to uneveness so I use voice commands for transitions only, I have elastics holding my legs into the stirrups.(only recently started doing and it is liberating)
My advise from over 20 years of this injury would be to make sure your general health is good, no make that great. So that your body heals well.
Extra protein to help rebuild your body and quality calcium.
Eat superfoods like Green barley, spirulina etc, not synthetic vitamin tablets.
Secondly before you get back in the saddle have atleast a month of exercised specifically for your core strength. It will protect and support your back. After 3 months out of the saddle your strength and your core will be weak and will strain your damaged vertebrae and back muscles.
Pilates is the best for this. I have tried every exercise program out there over the last 20 odd years, spent hours at the gym daily and pilates was the game changer for my riding and mobility quality. Nothing else even came close.
I only started doing pilates about 12 months ago. I am now riding with my stirrups even and 4 holes longer.
If you want to protect your back, strengthen your core muscles and keep them strong. Make this the most important thing in your day.