LATEST: Madonna's horse riding accident has thrown the tour for her upcoming album CONFESSIONS ON A DANCEFLOOR into doubt.

The MUSIC singer suffered a broken hand, a broken collar bone and cracked three ribs when she was fell while celebrating her 47th birthday on her rural English estate yesterday (16AUG05).

And now her injury has sparked concerns that she won't be able to tour once her dance album hits shelves in November (05).

Her spokeswoman LIZ ROSENBERG says, "It happened around 4pm London time. Madonna is pretty banged up...

"Her new disc is due this November and she is set to tour next summer. It's too soon to tell if the tour will be affected, but the press for the disc will definitely be affected."