Arm Is Fractured.
I fractured my left radial head and my ulnar doing a stoppie gone awry (went over the bars).
As I fell I remember thinking, "Tuck and roll, don't put your arm down." But it was too late, elbow went the direction it shouldn't.
Hopped back on the bike, knew it was bad, as couldn't put any weight on it.
No riding for at least 6 weeks.