NEW YORK : U2 frontman Bono underwent hours of surgery and will need intensive therapy after a bicycle accident, his doctor said Wednesday, revealing worse injuries than previously thought. Bono - whose hits with U2 have included ‘Sunday Bloody Sunday’ - fell off his bicycle Sunday in New York’s Central Park as the band prepared for a week-long residency on NBC’s ‘The Tonight Show.’ His doctor said that Bono went through five hours of surgery late Sunday in which his elbow was washed out and a bone on his arm repaired with three metal plates and 18 screws. The 54-year-old Irish singer went back into surgery the following day for treatment on his left hand, said Dean Lorich, an orthopedic surgeon at New York Presbyterian hospital. ‘He will require intensive and progressive therapy, however, a full recovery is expected,’ he said in a statement first reported by Rolling Stone magazine. Bono also suffered a fracture involving the orbit of an eye and injured his left shoulder blade, Lorich said. In an earlier statement on Bono’s accident, U2’s three other members said they expected the singer to make a full recovery and that the band would be playing again soon.