Quote: Have had a few 'sprain' a leg/foot.
It can happen, bad jump, hen fight, who knows.
If they are hobbling too badly for normal activity, I isolate them for most the day and sometimes the night.
Let them out once or twice a day to assess their movements...put them back in crate if still bad.
It can take a couple few days of rest, then weeks of milder limp to totally heal up.
Keep crate with flock, either in run and/or coop so you don't have to deal with re-integration.