Iluveggers
Enabler
I second the idea of a door off the back! If you can cut a large door, and add hinges and a lock, you could open it to the side, stick a rake or hoe in, & pull the shavings out the back. Not sure what type of surgery you are having, I was on crutches because of my hip a few years ago but had already committed to caring for my neighbors chickens, so I had my 10 year old come with me when I went over. He did all the heavy lifting and moving and I just supervised. If you belong to a church (or even if you don’t), maybe call there and ask to talk to the religious education director? Our church is always looking for projects to have the kids get service hours for confirmation, so you might get lucky and find a teen that can stop for an hour each weekend and just rake out & replace shavings! Good luck and best wishes for a speedy recovery! 
