Agent Andrea Giusti said in an email that Loren fell in a bathroom on Sunday and the surgery was performed later that day. The operation “went very well and now we only need to wait,” Giusti said.
The actress broke both her hip and a thigh bone, the agent said. The actor's sons Carlo and Edoardo are by her side at the hospital, they added.
It wasn't immediately clear when Loren would be discharged from the hospital.
Loren has lived in a Swiss villa near Lake Geneva for decades. Earlier this month, she appeared, looking radiant, with Italian designer Giorgio Armani in Venice at a fashion show held on the sidelines of the city’s annual film festival.
Born into poverty in Naples, Loren rose to become a Hollywood star, earning two Oscars along the way.
Loren won two Oscars, the first in 1961 for her tragic portrayal of a war-time mother in Vittorio De Sica's neo-realistic classic «La Ciociara» (Two Women). The second was an honorary lifetime achievement Oscar in 1991.
Some of her most memorable and successful film were made with fellow Italian co-star Marcello Mastroianni, who died in 1996. She has also co-stared with Cary Grant, Marlon Brando, Frank Sinatra and Paul Newman, among other 20th century film giants.
Her most recent starring role was in 2020's «La Vita Davanti a Se» (The Life Ahead).
In it, she plays a former prostitute and Holocaust survivor who looks after children of working prostitutes in the southern Italian city of Bari and helps an orphaned Senegalese migrant boy who had robbed her.