William Buick will be out of action for a minimum of six weeks after his fall in America last weekend.
It has been confirmed that Buick suffered a compression of his T12 vertebrae and he will be assessed again in six weeks.
"After seeing my specialist today (Friday), I can confirm I have a T12 compression fracture after my fall at Arlington last Saturday, which sadly saw Permian lose his life. He will be sorely missed, and my condolences go to His Highness Sheikh Hamdan and the team at Mark Johnston Racing," Buick told http://www.godolphin.com.
"I will have the injury re-scanned in six weeks time and will know more then.
"While I'm disappointed to be missing a large chunk of the season, I have plenty of respect for the injury and I realise how lucky I have been.
"I would like to thank all the well-wishers, everyone who helped me immediately after the accident at Arlington Park, including Charlie Johnston (assistant trainer), Jimmy Bell (President, Godolphin America), Chris Connett (Godolphin Travelling Head Lad), and all the doctors at the hospital in Chicago, and the whole racing community.
"I would also like to thank my family and friends and His Highness Sheikh Mohammed for their support," he said.