Jockey Rosie Napravnik, who broke her left arm in a spill at Delaware Park on Wednesday, will miss two to three months of action, according to her publicist, Kelly Wietsma.\r\nNapravnik, who underwent six hours of surgery on Thursday at Christiana Hospital in Delaware, was forced to undergo a second operation late Friday night, Wietsma wrote in an e-mail. According to Wietsma, Thursday's surgery was complicated because surgeons had to replace a plate that was inserted in four years ago to repair a broken wrist with a larger plate.\r\n&quot;It was a very difficult procedure and as a result there was a great deal of swelling which caused numbness and tingling in her fingers,&quot; Wietsma wrote. &quot;[Friday] night's surgery lasted three hours, in which doctors placed a vacuum drainage tube to help alleviate fluids and reduce swelling. Although she's in quite a bit of pain, she is feeling relief from the surgery and she's resting comfortably.&quot;\r\nDuring Thursday's surgery, Napravnik, 23, had pins inserted to repair a dislocated ulna bone.\r\nNapravnik was injured when her mount, Naseeb, broke down in the early stages of a five-furlong turf race Wednesday at Delaware, where she ranks as the leading rider. Naseeb was euthanized after suffering a broken bone between her elbow and shoulder.\r\nThe injury occurred exactly four years after Napravnik suffered a broken wrist in a spill at Colonial Downs. That time, Napravnik missed four months.\r\nNapravnik was enjoying a terrific year, ranking eighth nationally in wins with 131 and ninth nationally in purse money won with $4,699,716. She rode Pants On Fire to a ninth-place finish in the Kentucky Derby, the best finish by a female rider in the history of the race.\r\nNapravnik became the first female jockey to win the riding title at Fair Grounds, where she also won the Louisiana Derby aboard Pants On Fire.