Father Christopher Steck, the official Keeper of Jack, tweeted over the weekend that the 8-year old “is walking fine, but doesn’t mean there’s no problem”

Sure enough, more news came in on Tuesday, after the duo visited an orthopedic surgeon. The diagnosis was that “50-70% of Jack’s ACL is torn,” and that the injury was unlikely to heal on its own, meaning surgery is likely.

There was, Steck tweeted, “no indication of arthritis or damage to either meniscus,” and because the tear was partial, the surgery isn’t immediately necessary. Steck wrote that he’s aiming for the operation a month from now, “so I can be fully present during recuperation.”

End update.

(First noted by SB Nation DC.)