May 11 (Reuters) - Atletico ⁠Madrid's United States midfielder Johnny Cardoso will undergo ⁠surgery on his right ankle, the LaLiga club ‌said on Monday, dealing a significant blow to his hopes of playing at next month’s World Cup.

"Cardoso sustained the injury during ​training last Thursday, resulting in ⁠a severe sprain that ⁠has affected the joint," Atletico said in a statement.

It is ⁠the ‌latest setback for Cardoso, whose debut season at Atletico has been hampered by injuries. ⁠The 24-year-old also saw limited action during ​the March ‌international window, playing only 45 minutes in a ⁠friendly against ​Belgium.

U.S. coach Mauricio Pochettino is expected to name his 26-man World Cup squad later this month, with the co-hosts ⁠already facing injury concerns.

Captain Christian Pulisic ​recently missed matches for AC Milan with a muscular problem, while Olympique de Marseille winger Tim Weah and ⁠Olympique Lyonnais midfielder Tanner Tessmann have also been sidelined.

The U.S., who co-host the tournament alongside Mexico and Canada, will play Senegal on May 31 and Germany ​on June 6 in warm-up ⁠matches before opening their Group D campaign against Paraguay ​in Inglewood, California, on June 12.

They ‌will also face Australia and ​Turkey at the finals.

(Reporting by Janina Nuno Rios in Mexico City; Editing by Ken Ferris)