Doctors repaired Gibbons' pelvis -- which broke in two places when he was bucked from a horse -- using four large screws, spokesman Daniel Burns said.
"The doctor said the surgery went very well, and his prognosis for a full recovery is excellent," Burns told the Las Vegas Review-Journal.
Burns said he did not know when Gibbons, 65, would leave the hospital, but said the Republican governor would likely undergo several months of rehabilitation. A three-month rehabilitation would mean Gibbons, who was defeated in the June primary, might not return to his state Capitol office before his term expires at the end of the year, the Review-Journal said.
Gibbons broke his pelvis Tuesday afternoon when a horse he was trying to mount at a private ranch about 30 miles north of Reno bucked and threw him to the ground.