During a time when the city of Los Angeles is terrorized by animal attack style murders, a kindly elderly lady provides a nomad with room and board. It turns out that he is a werewolf and is responsible for the recent killings. He bites the elderly woman, turning her into a hungry werewolf. Now her adult son must try to prevent the both of them from doing any more harm.
The breaking isn't shown, it's just listed as an injury in the hospital. Then the movie fast forwards, so the next time the character shows up the bones are already healed. But they do spend some time in casts while in the hospital.