The five-term mayor was resting at Brigham and Women's Hospital after surgeons repaired his left fibula with a plate and screws, and will be on crutches for a couple of months, but he will continue his mayoral duties, his spokeswoman said Saturday.
Menino broke his leg Friday when he fell while visiting a school. The extent of the injury stirred up speculation he would step down, the Boston Herald said.
Menino, 70, said in March he will not run for re-election in November.
"The rumor is absolutely ridiculous," Menino spokeswoman Dot Joyce said.
The broken leg is the latest in a series of health issues affecting Menino in recent months. He was hospitalized with a blood clot and diagnosed with Type 2 diabetes and a lung infection in the fall, The Boston Globe said.
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