“Levine, who has gained weight in recent years and displays a hand tremor, fell full onto his shoulder. It could be anything from a bruise to a slight tear or a serious tear that would require surgery. Levine expects to have an M.R.I. scan on Monday if the swelling goes down enough, to determine the extent of the injury. A bruise may mean as little as a week of recovery; surgery could keep him out for several months.”