Italy winger Mirco Bergamasco has been ruled out of action for up to five months after fracturing his kneecap.
The Racing Metro winger went down amid fears of a rupture during his side's defeat to Australia before medics confirmed the 29-year-old's fracture.
"Medical exams revealed no ligament injury, and the surgery was a complete success," said the Italian Rugby Federation.
The 29-year-old left the pitch on a stretcher after being given treatment while prop Andrea Lo Cicero could also be out for several weeks after suffering a blow to this throat and fractures to two ribs.
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