DEL MAR, Calif. -- Bosque Redondo, who fractured the sesamoid bones in his right front ankle at the finish of Sunday's Pacific Classic at Del Mar, was scheduled to undergo surgery on Tuesday night or Wednesday morning in an attempt to save him for stud duty.

Sam Bradley, one of the veterinarians who attended to Bosque Redondo following his injury, said on Monday morning that horses with the type of injury suffered by Bosque Redondo have a "60-40" chance of survival.

"As sesamoid fractures go, it's a bad one. Fortunately, it was not a compound fracture," Bradley said. "He fractured both sesamoids. He destroyed the suspensory apparatus for that ankle. That's why the ankle drops to the ground. He's a good candidate for surgery. He's a smart horse."

Bosque Redondo, trained by Paco Gonzalez, spent Sunday night in the Del Mar barn of Jenine Sahadi, where he and stablemate Came Home arrived Sunday morning from Hollywood Park. Came Home went back to Hollywood Park on Sunday night after winning the Pacific Classic. Late Monday morning, Bosque Redondo - who was outfitted with an external splint immediately after being injured - was sent by van to Los Alamitos, where he is scheduled to undergo surgery at the adjacent Equine Medical Center.

Dr. C. Wayne McIlwraith is flying in from Colorado to perform the surgery. According to Bradley, the ankle joint will be fused and held together with a metal plate.

Bradley said the injury to Bosque Redondo is "the exact same thing" as the injury suffered last fall by the graded stakes-winning turf horse Manndar, who was injured on the grass at Hollywood Park. Manndar survived the surgery, and less than two months ago was sent to Kentucky, where he will begin stud duty next spring. Bradley said the biggest postoperative concern would be laminitis, a disease brought on by poor circulation in a horse's lower limbs.

Bosque Redondo, a 5-year-old son of Mane Minister who was bred and is owned by Trudy McCaffery and John Toffan, won 6 of 17 starts, including the San Bernardino Handicap on April 6.

An emotionally drained McCaffery was at Sahadi's barn Monday morning, visiting Bosque Redondo. "We'll do everything we can to save this horse. No holds barred," McCaffery said.

"I didn't even see him go down," McCaffery said. "Coming down the stairs, I saw a jockey with yellow silks laying there, and then saw he had a yellow hat, and I knew that's what David was wearing," she said of jockey David Flores. "My knees buckled."