Goodness Leo, take it easy with that. If you are going back to Judo I would defintely talk to your coach and take a more selective approach to randori. As I said before, do somewhere between little to no randori depending on how you feel. And make sure where possible you avoid any knuckle heads in class.

Or ask your coach if you can do ground randori only for a while. Just work on sparring on the ground. The less chance you have of getting thrown, the less chance you have of getting injured IMO. Most injuries in Judo I've seen occur by a)someone getting thrown b) someone trying to throw their opponent.

Good luck whatever you decide to do Leo! Keep us updated.
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"Let your food be your medicine, and your medicine be your food" Hippocrates.