Frequently called bumble foot.
Standard wisdom is if you tape and splint them they will be ok in 6 weeks, if you leave them alone they will be straightened out by a month and a half.
A shot of selenium may help, it does (supposedly) in foals. Can;t hurt. Yaers ago I bought all the bumble foot calves at the auction that I could. Could buy the poor litle cripplesw that should be shot to put out of their misery for a buck to 5 bucks. Took them home and never did anything other then raise them like any other calf. IN a couple of weeks I would haul them back to the auction and make handfuls of money over my costs.