My 81, now 82, year old Father broke his ankle las...

My 81, now 82, year old Father broke his ankle last September in his assisted living facility and had surgery at Tufts. After two casts it finally came off and he was in a boot. However upon the boot being removed we noticed his repaired right ankle that his foot is now crooked and her cannot straighten it out. He's in a wheelchair and can't use that ankle to push the chair while he's wheeling it. Not sure who to talk to about this since it seems to me that this shouldn't be the case, appears that someone did something wrong in resetting his ankle. And somehow during all follow up visits etc no one at Tufts could notice it was healing crookedly,??.