Jack Miller has been ruled out of this weekend's Czech Republic MotoGP at Brno, despite being passed fit by medical staff.

The Australian star, winner at Assen, sustained hairline fractures to his T6 vertebrae and radius bone in his right wrist, during a fast warm-up fall last Sunday in Austria.

Miller was subsequently passed fit to ride by medical staff at the Brno circuit, but 'in conjunction with HRC and the rider's management, the team took the decision to withdraw the Australian from this weekend's race'.

"Jack is a racer, so he obviously wanted to race after being passed fit today. However, after discussions with both HRC and Jack's management team, we have made the decision to withdraw him from the Czech Grand Prix," explained Marc VDS Honda team principal Michael Bartholemy.

"For us it's more important that he has more time to recover from the crash in Austria, because we want him back to full fitness as soon as possible. Our priority is to have a fully fit rider back on the bike and that's why we made this decision."

Miller, who began the season with leg injuries in a motocross training accident and only returned to full fitness for the start of the Austrian weekend, will now make a return to action at next month's British Grand Prix.