One more post, on one broken leg.

[Gene C]

Either way, Booth can't win.
The graceful, young, athletic actor, while yielding a large knife wrestles against an unarmed opponent, jumps over the rail to the stage and breaks his leg in the fall or,
the experienced equestrian has a horse fall on him. ( I think both)

His story changes based upon who he is talking to and which version he thinks will gain him the most sympathy and help.