What was the nature of the sport injury? Were you hit in that area of your back?
Do you have any other symptoms along with the pinky/ring finger pain/numbness; a hint of weakness.?

Have you considered an eval /possible treatment with skilled chiropractor? Or a Spinal PT?

Did Dr say if the Anterolisthesis was stable or unstable?
I have unstable retro L5 that has started to become bothersome..but comes and goes. Recently had a few chiro sessions to see if it helped, so far so good.

[degenerative endplate changes] - that is usually a chronic thing
[anterior osteophytes] I have those too- chronic usually
[Cervical spinal canal is small in caliber] if they gave some measurement, %, or mild, moderate , severe it would help on that one