I’m not sure that the elevator pitch for this movie would have convinced me of its eventual merits.
It’s an all too familiar thriller set-up: man wakes up and either reality is on the blink or he is. Cinema being a wholly visual medium, this kind of first person / third person ambiguity is often difficult to establish credibly and then hold onto until through to final act, particularly when one of the options is that much more far-fetched than the other.
Fractured takes some of the inevitable liberties, but is generally successful and in many ways a bit of an education in how that little extra bit of quality across the production (acting, direction, score etc.) can make all the difference.
(I'd add that it helps that as a Brit I tend to find American hospitals particularly scary places!)