The Frenchman came off ten minutes before the final whistle in Saturday’s disappointing draw with Real Betis, citing knee pain.
He was replaced by Gonzalo Garcia in the 81st minute of his side’s 1-1 draw as fans fear the worst for the 27 year old, especially with the World Cup approaching.
Now, the club have confirmed the news as they await for updates on the striker who is likely to miss the final games of the season.
“Following the tests carried out today on our player Kylian Mbappé by the Real Madrid Medical Services, he has been diagnosed with an injury to the semitendinosus muscle in his left leg. Awaiting progress.”
"I have no idea (what's wrong with Mbappé)," Arbeloa said in his postmatch news conference. "He felt some discomfort. We'll see how he evolves over the next few days."
The injury scare comes 53 days before France begin their 2026 World Cup campaign against Senegal on June 16th and both France and Madrid supporters will worry that he will have to rest and recover this summer.
Mbappe has scored 41 goals in 41 appearances across all competitions this season and will be pivotal to his country’s success if he can make it to North America.
France will face Senegal in their opening fixture on Tuesday, June 16th before playing Iraq six days later on Monday, June 22nd.
As supporters await further updates, Madrid’s medical staff are expected to run further tests before confirming whether it is a minor strain or something more significant.