Dr. Dean Richardson, who performed surgery Monday on Kentucky Derby winner Barbaro to replace a pair of bent screws and implant three new ones in the colt's injured right hind leg, said that the new repairs were the result of force and motion in the affected area and do not signal a problem in the healing process.
Barbaro's X-rays continue to show bone healing about six weeks after his breakdown in the Preakness Stakes, a positive sign.