Montreal Impact captain Raitala out 2-3 months
The 31-year-old Finnish central defender was hurt when he collided with a Saprissa attacker in the fifth minute of Wednesday's CONCACAF Champions League match.
Montreal said Friday he fractured his right fibula and will be sidelined 8-to-12 weeks.
Central defender Rudy Camacho injured a knee last week.
"We need to adapt quickly and battle with what we have left,” Impact coach Thierry Henry said.
Montreal advanced on away goals following the 0-0 draw and plays the Honduran club Olimpia in the quarterfinals. The Impact open their Major League Soccer season at home Saturday against New England.