Lecavalier was injured in a 6-3 Lightning loss to the Washington Capitals Thursday.
A team statement said Lecavalier "underwent a successful procedure on his right hand" Monday at the Cleveland Clinic in Cleveland.
"The procedure revealed an unstable fracture in the hand. It was fixated with a plate and screws to properly stabilize the fracture and promote optimal healing," the statement said.
Lecavalier, a 30-year-old center, has three goals and six assists in 14 games this season.
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