Kalderon operation successful Tom Hogan has expressed his satisfaction with his stablestar Kalderon who underwent an operation on a fractured ulna at Troytown Veterinary Clinic yesterday. The Co Tipperary trainer reported "vet Mike Salder carried out the operation and is very happy with the way it went. Kalderon is moving around his box fine but the next 72 hours will tell a lot." Kalderon suffered the fracture in a fall in a chase at Punchestown on Thursday.