I have just come home after having an ALIF (L4/S1) and want to tell you about the wonderful tool the occupational therapist at the hospital introduced me to. It's called a bed pole. This tool has a flat piece that sits under the mattress and a pole that comes up the side of the mattress and is higher than the mattress. This wonderful tool gives you something to hold onto when you are doing a log roll. It is something to lean on and help balance when you are moving from a sitting to standing position and is even helpful when you are trying to reposition yourself in bed.
I didn't have anything like this when I had my TLIF last year so I can compare the two experiences and tell you that this tool is right up there with the ever popular reacher/grabber tool that we can't live without!