O'Brien to require surgery Apprentice jockey Katherine O'Brien is today recovering from a heavy fall at Sligo on Wednesday and will require surgery on a broken arm. O'Brien was riding Chaotic in the Derrinstown Stud Apprentice Jockeys Maiden when her mount slipped up five furlongs out. O'Brien, who partnered her first winner on the Tom Hogan trained Lovestoned at Naas on July 7, fractured her left arm below the elbow and will require surgery to insert two plates and nine pins. She also has a couple of broken ribs and a bruised kidney.
